The screen of a tablet has dimensions 8 inches by 5 inches. The
border around the screen has thickness z.
a. Write an expression for the total area of the tablet, including the
frame.
8 inches
5 inches
b. Write an equation for which your expression is equal to 50.3125. Explain what a solution to this
equation means in this situation.
c. Try to find the solution to the equation. If you get stuck, try guessing and checking. It may help to
think about tablets that you have seen.

Answers

Answer 1

(a) The expression for the total area of the tablet = (8 + 2z)(5 + 2z)

(b) Equation is: (8 + 2z)(5 + 2z) = 50.3125 and the solution to this equation refers to the thickness of frame for which the area of the tablet is 50.3125.

(c) Solution or the thickness of the frame must be 0.375 inches.

The dimensions of the screen of a tablets are 8 inches by 5 inches.

border around the screen has thickness z.

So the length with frame = 8 + 2z

and the width of the screen with frame = 5 + 2z

So the expression for the total area of the tablet = Length* Width = (8 + 2z)(5 + 2z)

Equation for which the expression is equal to 50.3125 is given by,

(8 + 2z)(5 + 2z) = 50.3125

So the solution to this equation refers to the thickness of frame for which the area of the tablet is 50.3125.

Solving the equation we get,

(8 + 2z)(5 + 2z) = 50.3125

40 + 10z + 16z + 4z² = 50.3125

4z² + 26z - 10.3125 = 0

Solving this quadratic equation we get the solutions,

z = -6.875, 0.375

Since the thickness cannot be negative so -6.875 must be neglected.

Hence the thickness of the frame is 0.375 inches.

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Related Questions

Find the value(s) of k for which u(x.t) = e-³sin(kt) satisfies the equation Ut=4uxx

Answers

When k = 0, both sides of the equation equal 0:
3cos(0) = 4(0)sin(0)
3 = 0

There are no other values of k for which the equation holds true, the only value of k that satisfies the given equation is k = 0.

To find the value(s) of k for which u(x, t) = e^(-3)sin(kt) satisfies the equation Ut = 4Uxx, we first need to calculate the partial derivatives with respect to t and x.
[tex]Ut = ∂u/∂t = -3ke^(-3)cos(kt)Uxx = ∂²u/∂x² = -k^2e^(-3)sin(kt)[/tex]
Now, we will substitute Ut and Uxx into the given equation:

[tex]-3ke^(-3)cos(kt) = 4(-k^2e^(-3)sin(kt))[/tex]
Divide both sides by e^(-3):

[tex]-3kcos(kt) = -4k^2sin(kt)[/tex]

Since we want to find the value(s) of k, we can divide both sides by -k:

3cos(kt) = 4ksin(kt)

Now we need to find the k value that satisfies this equation. Notice that when k = 0, both sides of the equation equal 0:

3cos(0) = 4(0)sin(0)
3 = 0

Since there are no other values of k for which the equation holds true, the only value of k that satisfies the given equation is k = 0.

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6. Torrence wants to remodel his studio apartment. The first thing he is going to do is replace the


floors in the living space and kitchen (not the closet or bathroom)


24


Living Space


101


200


31


71


38


closet


HD


kitchen


bathroom


61


a How many square feet of flooring will Torrence need to buy?

Answers

Torrence needs to buy 468 square feet of flooring for his remodeling project.

To calculate the total square feet of flooring needed, we first need to find the area of the living space and the kitchen. The dimensions given for the living space are 24x10, while the kitchen dimensions are 12x13.

1: Calculate the area of the living space.
Area = Length x Width
Area = 24 x 10
Area = 240 square feet

2: Calculate the area of the kitchen.
Area = Length x Width
Area = 12 x 13
Area = 156 square feet

3: Add the areas of the living space and kitchen to find the total square footage.
Total Area = Living Space Area + Kitchen Area
Total Area = 240 + 156
Total Area = 468 square feet

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Use the prescribed Testing Method if it is stated, to determine
whether the
following series is convergent or divergent.
Apply the Integral Test to:
[infinity]X
n=1
1
5√n

Answers

To apply the Integral Test, we need to find a function f(x) that is continuous, positive, and decreasing such that f(x) = 1/(5√x).

Taking the integral of f(x) from 1 to infinity, we get:

∫1 to infinity (1/(5√x)) dx = 2/5

Since this integral is a finite number, the series is convergent by the Integral Test.
To determine whether the series is convergent or divergent, we will apply the Integral Test as requested. The given series is:

Σ (from n=1 to infinity) of (1 / (5√n))

First, let's consider the function f(x) = 1 / (5√x). This function is positive, continuous, and decreasing for x ≥ 1, which are the necessary conditions for applying the Integral Test.

Now, we evaluate the improper integral:

∫ (from x=1 to infinity) of (1 / (5√x)) dx

To solve this integral, we'll first rewrite the integrand:

1 / (5√x) = 1 / (5x^(1/3))

Now integrate:

∫(1 / (5x^(1/3))) dx = (3/2) * (1/5) * x^(2/3) + C = (3/10) * x^(2/3) + C

Evaluate the improper integral:

lim (t -> infinity) [∫(from x=1 to t) of ((3/10) * x^(2/3)) dx]

= lim (t -> infinity) [(3/10) * (t^(2/3) - 1)]

Since the exponent (2/3) is less than 1, the limit converges to a finite value:

lim (t -> infinity) [(3/10) * (t^(2/3) - 1)] = -(3/10)

Since the improper integral converges, by the Integral Test, the given series is convergent as well.

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Nadia bought five tickets to attend a spaghetti supper fund raiser at her school. The equation 5x = 32. 50 can be used to find X, the cost of each ticket in dollars. Which equation represents the cost of each ticket. A. X=32. 50/5

B. X=32. 50(5)

C. X= 32. 50-5

D. X= 32. 50+5

Answers

Nadia brought five tickets to attend a spaghetti supper fund rasier at her school. The equation 5x = 32.50 can be used to find x, the cost of each ticket in dollars. The equation x = 32.50/5 will represent the cost of each ticket.

This is because the equation 5x = 32.50 is asking us to find the cost of each ticket (represented by x) when there are five tickets in total and the total cost is $32.50.

To solve for x, we need to isolate it on one side of the equation. We can do this by dividing both sides by 5, which gives us:

X=32.50/5.

So, each ticket costs $6.50.

Therfore, the correct equation that represents the cost of each ticket is X=32.50/5, option A.

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Mrs. mueller writes an inequality on the board. the table shows the responses of four students for possible values of x.
x>6
student
jacob
kendra
luke
maya
response
6
8
10
12
which student has a correct response to mrs. mueller's inequality?
o jacob
o kendra
o luke
o maya

Answers

The inequality given by Mrs. Mueller is x>6, which means that x is greater than 6. To check which student has given the correct response, we need to check if their values of x satisfy the given inequality.

Looking at the table, we see that all four students have given values of x that are greater than 6. However, we need to choose the student who has given the correct response to the inequality.

Jacob has given the response 8, which satisfies the inequality x>6. Kendra has given the response 10, which also satisfies the inequality. Luke has given the response 12, which is also greater than 6 and satisfies the inequality. Maya has given the response 10, which is the same as Kendra's response and also satisfies the inequality.

Therefore, we can say that all four students have given correct responses to Mrs. Mueller's inequality.

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Use the method of Lagrange multipliers to find the points on the
curve x2 + y2 −6x + 7 = 0 that are closest to and furthest from the
point P = (0, 3).

Answers

Using the value of λ = (18 + √130)/18, we get: x = 3λ ≈ 4.895 y = 3λ - 3 ≈ 5.316 So the point on the curve that is furthest from P is approximately (4.895, 5.316).

To use the method of Lagrange multipliers, we first need to define our objective function and our constraint. Our objective function is the distance between the point P and a point on the curve, which can be expressed as:

f(x, y) = (x - 0)^2 + (y - 3)^2 = x^2 + (y - 3)^2

Our constraint is the equation of the curve:

g(x, y) = x^2 + y^2 - 6x + 7 = 0

To use the method of Lagrange multipliers, we need to introduce a new variable λ and solve the following system of equations:

∇f = λ∇g
g(x, y) = 0

where ∇f and ∇g are the gradients of f and g, respectively.

Taking the partial derivatives of f and g with respect to x and y, we have:

∂f/∂x = 2x
∂f/∂y = 2(y - 3)
∂g/∂x = 2x - 6
∂g/∂y = 2y

Setting ∇f equal to λ∇g, we have:

2x = λ(2x - 6)
2(y - 3) = λ(2y)

Simplifying these equations, we get:

x = 3λ
y = 3λ - 3

Substituting these expressions into the equation of the curve, we get:

(3λ)^2 + (3λ - 3)^2 - 6(3λ) + 7 = 0

Simplifying this equation, we get:

18λ^2 - 36λ + 13 = 0

Solving for λ, we get:

λ = (18 ± √130)/18

Substituting these values of λ into our expressions for x and y, we get the coordinates of the points on the curve that are closest to and furthest from the point P.

To find the point that is closest to P, we need to minimize the objective function f(x, y). Using the value of λ = (18 - √130)/18, we get:

x = 3λ ≈ 1.105
y = 3λ - 3 ≈ -0.316

So the point on the curve that is closest to P is approximately (1.105, -0.316).

To find the point that is furthest from P, we need to maximize the objective function f(x, y). Using the value of λ = (18 + √130)/18, we get:

x = 3λ ≈ 4.895
y = 3λ - 3 ≈ 5.316

So the point on the curve that is furthest from P is approximately (4.895, 5.316).

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which graph represents the linear equation y= 1/2 x + 2

Answers

Answer:

The graph on the top right

Step-by-step explanation:

The slope-intercept form is y = mx + b

m = the slope

b = y-intercept

The equation is y = 1/2x + 2

The y-intercept in this equation is 2, meaning the graph has a point (0,2) on it.  Looking at the options, the only graph that has a point (0,2) is the map on the top right, and that is the answer.

An illinois study examined the effect of day care on behavior in toddlers. randomly selected parents who had a toddler in full-time day care were asked if their child had behavioral problems. the researchers found that among 987 parents surveyed, 212 said their child had behavioral problems. among 349 randomly selected parents with a toddler at home, 17 reported that their child had behavioral problems.

Answers

4.87% of toddlers at home had behavioral problems, according to the parents surveyed.

The Illinois study examined the effect of day care on the behavior of toddlers by surveying randomly selected parents. There were two groups of parents: those with a toddler in full-time day care and those with a toddler at home.

In the first group, 987 parents with a toddler in full-time day care were surveyed. Among these parents, 212 reported that their child had behavioral problems. To calculate the percentage of children with behavioral problems in this group, we can use the following formula:

(212/987) x 100 = 21.48%

In the second group, 349 parents with a toddler at home were surveyed. Among these parents, 17 reported that their child had behavioral problems. To calculate the percentage of children with behavioral problems in this group, we can use the following formula:

(17/349) x 100 = 4.87%

The study found that 21.48% of toddlers in full-time day care had behavioral problems, whereas 4.87% of toddlers at home had behavioral problems, according to the parents surveyed.

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geometry geometry geometry

Answers

We can solve this problem by using some properties of centroids of the triangle and the fact that the centroid divides each median in a 2:1 ratio.

What is a centroid of a triangle?

The centroid of a triangle is the point intersection of the three medians of the triangle.

First find the value of MR. The centroid divides each median in a 2:1 ratio, so we have:

MR = 2/3 * R + 1/3 * M

R is the centroid, so R = (P + V + M)/3.

Substituting, we get: MR = 2/3 * [(P + V + M)/3] + 1/3 * M

= 2/9 * P + 2/9 * V + 5/9 * M

Now, substitute the given values of PV and M to find MR:

MR = 2/9 * (3w+7) + 2/9 * (12y-9) + 5/9 * (5x-9) = (2w/3 + 8y/9 + 25x/9) - 1

Simplifying the expression: MR = (2w + 24y + 25x - 27)/9

Next, let's find the value of RP using the centroid. Since R is the midpoint of PV:

RP = 2/3 * R + 1/3 * P

Substituting the values of R and P:

RP = 2/3 * [(3w+7)/3 + (12y-9)/3 + (5x-9)/3] + 1/3 * (3w+7)

= (2w/9 + 8y/9 + 5x/3 + 7/3) + (w+7)/3

= (5w/3 + 8y/9 + 5x/3 + 10)/3

Simplifying this:

RP = (5w + 8y + 5x + 30)/9

Next, find the value of RV using the centroid. R is the midpoint of PV:

So, RV = 2/3 * R + 1/3 * V

Substituting R and V values:

RV = 2/3 * [(3w+7)/3 + (12y-9)/3 + (5x-9)/3] + 1/3 * (12y-9) = (2w/9 + 8y/9 + 5x/3 + 7/3) + 4y/3 - 3

Simplifying: RV = (5w + 20y + 5x - 18)/9

Find the value of RW using the centroid. R is the midpoint of VW, so: RW = 2/3 * R + 1/3 * W

Substituting the values of R and W:

RW = 2/3 * [(3w+7)/3 + (12y-9)/3 + (5x-9)/3] + 1/3 * 1.75x = (2w/9 + 8y

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Question 10 9 pts 1 De Let f(x) = 2.3 + 6x? - 150 +3. (a) Compute the first derivative of f'(x) = (c) on what interval is f increasing? interval of increasing = (d) On what interval is f decreasing? interval of decreasing = **Show work, in detail, on the scrap paper to receive full credit.

Answers

The First derivative: f'(x) = 12x - 15 and the Interval of increasing: (5/4, ∞) and the Interval of decreasing: (-∞, 5/4)

Hi! I'd be happy to help you with your question. Let's compute the first derivative, and then determine the intervals of increasing and decreasing:

Given function: f(x) = 2.3 + 6x^2 - 15x + 3

(a) Compute the first derivative, f'(x):
f'(x) = d(2.3)/dx + d(6x^2)/dx - d(15x)/dx + d(3)/dx
f'(x) = 0 + 12x - 15 + 0
f'(x) = 12x - 15

(c) To find the interval where f is increasing, we need to find where f'(x) > 0:
12x - 15 > 0
12x > 15
x > 15/12
x > 5/4

So, the interval of increasing is (5/4, ∞).

(d) To find the interval where f is decreasing, we need to find where f'(x) < 0:
12x - 15 < 0
12x < 15
x < 15/12
x < 5/4

So, the interval of decreasing is (-∞, 5/4).

Your answer:
- First derivative: f'(x) = 12x - 15
- Interval of increasing: (5/4, ∞)
- Interval of decreasing: (-∞, 5/4)

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What is the domain of the function f(x)=2x^2+5x-12

Answers

The domain of the function f(x) = 2x² + 5x - 12 is all real numbers, or (-∞, ∞).

This is because there are no restrictions on the input values of x that would make the function undefined. In other words, we can input any real number into the function and get a valid output.

To determine the domain of a function, we need to consider any restrictions on the independent variable that would make the function undefined.

Common examples of such restrictions include division by zero, taking the square root of a negative number, or taking the logarithm of a non-positive number. However, in this case, there are no such restrictions, and therefore the domain is all real numbers.

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Ms.smith and mr brown took attendance at the fire drill. the actual count of students and teaches was between 96 and 105. what is the absolute error

Answers

Ms. Smith and Mr. Brown's attendance count had an absolute error of 1.5 people. This means that the measured value was 1.5 people off from the actual value, which was between 96 and 105.

The absolute error is a measure of the difference between the actual value and the measured value. In this case, Ms. Smith and Mr. Brown took attendance at a fire drill and the actual count of students and teachers was between 96 and 105. Let's say they counted 100 people in total.

To find the absolute error, we need to subtract the measured value from the actual value. In this case, the absolute error would be |100 - 98.5| = 1.5, where 98.5 is the midpoint between 96 and 105.

This means that the attendance count was off by 1.5 people. It is important to note that absolute error is always positive and represents the magnitude of the difference between the actual and measured values.

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The absolute error  is 0.5.

How to calculate absolute error range?

The absolute error is a measure of how far away a given estimate is from the actual value. In this case, we know that the actual count of students and teachers was between 96 and 105, but we don't know the exact number. Let's assume that Ms. Smith and Mr. Brown recorded the number of students and teachers as 100.

The absolute error is then calculated by taking the absolute value of the difference between the estimate and the actual value. In this case, the estimate is 100 and the actual value is somewhere between 96 and 105. So, the absolute error would be the difference between 100 and the midpoint between 96 and 105.

The midpoint between 96 and 105 is (96 + 105)/2 = 100.5. Therefore, the absolute error would be |100 - 100.5| = 0.5. So the absolute error in this case is 0.5.

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HELP DUE TOMORROW WELL WRITTEN ANSWERS ONLY!!!!!!!
In a circle, an angle measuring π radians intercepts an arc of length 9π. Find the radius of the circle in simplest form.

Answers

Applying the arc length formula, the radius of the circle is calculated as: r = 9 units.

How to Apply the Arc Length Formula to Find the Radius of a Circle?

In a circle, the measure of an angle in radians is related to the length of the intercepted arc and the radius by the formula:

arc length = radius * angle measure

In this case, we are given that the angle measure is π radians and the arc length is 9π. Substituting these values into the formula, we get:

9π = r * π

where r is the radius of the circle.

Simplifying this equation, we can divide both sides by π:

9 = r

Therefore, the radius of the circle is 9.

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Simon bought a 10-pound bag of cat food. he give 0.3 pounds of food per day. write an equation in two variables to describe how the amount of cat food in the bag changes over time. explain variable in your equation represent

Answers

The equation in two variables that describes how the amount of cat food in the bag changes over time is: A = 10 - 0.3t
Where A represents the amount of cat food left in the bag after t days, and t represents the number of days that have passed since Simon bought the bag.

The variable A is the dependent variable because it depends on the value of t. As time passes and t increases, the amount of cat food left in the bag decreases. The variable t is the independent variable because it is the input that determines the value of A.

For example, after one day (t = 1), Simon will have used 0.3 pounds of cat food and there will be 9.7 pounds left in the bag (A = 10 - 0.3(1) = 9.7). After two days (t = 2), he will have used 0.6 pounds of cat food and there will be 9.4 pounds left in the bag (A = 10 - 0.3(2) = 9.4), and so on.

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The world's population can be projected using the following exponential growth

model. using this function, a= pert, at the start of the year 2022, the world's

population will be around 7. 95 billion. the current growth rate is 1. 8%. in what

year would you expect the world's population to exceed 10 billion?

Answers

We can expect the world's population to exceed 10 billion around the year 2038, based on the given growth rate and exponential growth model.

Using the exponential growth model, the world's population (P) can be projected with the formula P = P0 * e^(rt), where P0 represents the initial population, r is the growth rate, t is time in years, and e is the base of the natural logarithm (approximately 2.718).

In this case, the initial population (P0) at the start of 2022 is 7.95 billion, and the current growth rate (r) is 1.8%, or 0.018 in decimal form.

To estimate when the population will exceed 10 billion, we can rearrange the formula as follows: t = ln(P/P0) / r. We want to find the year (t) when the population (P) surpasses 10 billion.

By plugging in the values, we get: t = ln(10/7.95) / 0.018. Calculating this, t ≈ 15.96 years.

Since we're starting from 2022, we need to add this value to the initial year: 2022 + 15.96 ≈ 2038.

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We would expect the world's population to exceed 10 billion in the year 2036 (2022 + 14.6).

How to find the  growth population?

The exponential growth model is given by:

P(t) = P0 * [tex]e^(^r^t^)[/tex]

where P0 is the initial population, r is the annual growth rate as a decimal, and t is the time in years.

From the problem, we know that:

P0 = 7.95 billion

r = 0.018 (1.8% as a decimal)

P(t) = 10 billion

We want to solve for t in the equation P(t) = 10 billion. Substituting in the values we know, we get:

10 billion = 7.95 billion *[tex]e^(0^.^0^1^8^t^)[/tex]

Dividing both sides by 7.95 billion, we get:

1.26 = [tex]e^(0^.^0^1^8^t^)[/tex]

Taking the natural logarithm of both sides, we get:

ln(1.26) = 0.018t

Solving for t, we get:

t = ln(1.26)/0.018

Using a calculator, we get:

t ≈ 14.6 years

So, we would expect the world's population to exceed 10 billion in the year 2036 (2022 + 14.6).

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_A student wanted to assess the average time spent studying for his most recent exam taken in class. He asked the first 45 students who came to class how much time they spent and recorded the values. He then used this information to calculate a 95% confidence interval for the mean time spent by all students. Was this an appropriate use of the t procedure for a confidence interval

Answers

The student's use of the t procedure for a confidence interval was appropriate because the sample size was greater than 30 and the population standard deviation was unknown. A 95% confidence interval was calculated using the t-distribution.

It was an appropriate use of the t procedure for a confidence interval. The student wanted to assess the average time spent studying for his most recent exam taken in class, and he used a sample of 45 students to estimate the population mean with a 95% confidence interval.

Since the population standard deviation is not known, the student used the t-distribution to calculate the confidence interval. The t-distribution is used when the sample size is small, and the population standard deviation is unknown.

The student assumed that the sample was randomly selected, and the data was approximately normally distributed. By using the t procedure, the student was able to estimate the population mean with a margin of error and a level of confidence of 95%.

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4/25/2015


Louisiana EAGLE


Item 4:


Armando designs a suspension bridge. He makes this drawing to show its size.


SIDADE


50 ft


230 ft


After the bridge is built, Armando is asked to design another bridge. The second bridge needs to have a similar shape to Armando's first


bridge, but it only needs to be 184-feet long. How tall does the second bridge need to be?


A. 32 feet


B. 36 feet


C. 40 feet


D. 44 feet


Item 5:

Answers

The height of the second bridge that Armando needs to design is 40 feet (Option C).

To get the height of the second bridge designed by Armando, we need to maintain the same ratio between the length and height as in the first suspension bridge drawing. The first bridge has a length of 230 ft and a height of 50 ft.
First, find the ratio of the height to the length of the first bridge:
50 ft (height) / 230 ft (length) = 5/23
Now, we know the length of the second bridge is 184 ft. To get the height of the second bridge, we will use the same ratio (5/23) and multiply it by the length of the second bridge:
(5/23) * 184 ft = 40 ft
So, the height of the second bridge that Armando needs to design is 40 feet (Option C).

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work out minimum and maximum number of hikers who could have walked between 7 miles and 18 miles

Answers

(a) The minimum number of hikers who could have walked between 7 miles and 18 miles: at least 5 hikers and at most 13 hikers.

(b) The maximum number of hikers who could have walked between 7 miles and 18 miles:  at most 15 hikers.

According to the question and given conditions, we need to find the cumulative frequency of the distance intervals that fall within the range of 7 miles and 18 miles, to find the minimum number of hikers and the maximum number of hikers who could have walked between 7 miles and 18 miles.

The sum of the frequencies up to a certain point in the data is the cumulative frequency. By adding the frequency of the current interval to the frequency of the previous interval, we can calculate the cumulative frequency.

a) To find the minimum number of hikers who could have walked between 7 miles and 18 miles, we will find the cumulative frequency of the intervals from 5 miles to 10 miles and then from 10 miles to 15 miles.

Cumulative frequency for 5 < x <= 10: 2 + 3 = 5

Cumulative frequency for 10 < x <= 15: 5 + 8 = 13

Therefore, we find that at least 5 hikers and at most 13 hikers could have walked between 7 miles and 18 miles.

b) To find the maximum number of hikers who could have walked between 7 miles and 18 miles, we will find the cumulative frequency of the intervals from 10 miles to 15 miles and from 15 miles to 20 miles.

Cumulative frequency for 10 < x <= 15: 8

Cumulative frequency for 15 < x <= 20: 8 + 7 = 15

Therefore, we can conclude that at most 15 hikers could have walked between 7 miles and 18 miles.

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The complete question is "a) work out the minimum number of hikers who could have walked between 7 miles and 18 miles b) work out the maximum number of hikers who could have walked between 7 miles and 18 miles."

someone help plss my state test is soon

Answers

The graph of constant of proportionality of y = 3.75x is attached

What is constant of proportionality?

The constant of proportionality is a term that indicates a reciprocal relationship between two variables, in which the change of one affects the other similarly.

When x and y are directly linked in this way, the following equation can be used to calculate how they operate together:

y = kx,

where

k serves as the aforementioned constant.

In the problem k = 3.75

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The population of dolphins in the Gulf of Mexico has been decreasing at a rate of 4% every 10


years. In 2020 there were 4,670 dolphins. If things continue this way, how many dolphins will there


be in the year 2100?

Answers

The number of dolphins that will be there in the year 2100 is 1003, under the condition that in the Gulf of Mexico has been decreasing at a rate of 4% every 10
years.

Here the population of dolphins in the Gulf of Mexico in 2020 was 4,670.The rate of decrease is 4% every 10 years.
Therefore, the population would  decrease by 4% every 10 years.
We want to evaluate the population in 2100, which is  80 years from now, which is eight 10-year periods.
Now, we have to calculate the population after eight 10-year periods.
Each period would decrease the population by 4%.
Hence, the population after eight periods is
4670 × (1 - 0.04)⁸
= 4670 × (0.96)⁸
= 1003

Then, if things progress like this, the population of dolphins in the Gulf of Mexico in the year 2100 will be close to 1000.
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QUESTION IN PHOTO I MARK BRAINLIEST

Answers

The value of measure of arc QI is,

⇒ m QI = 94°

We have to given that;

⇒ m YS = 180°

⇒ m ∠QBI = 137°

Hence, We can formulate;

⇒ m ∠QBI = 1/2 (m YS + m QI)

⇒ 137 = 1/2 (180 + m QI)

⇒ 274 = 180 + m QI

⇒ m QI = 274 - 180

⇒ m QI = 94°

Thus, The value of measure of arc QI is,

⇒ m QI = 94°

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Write an exponential regression function to model the situation.​

Answers

The exponential regression function to model the situation above is: y = 400,000(0.841)^x

What is the explanation for the above response?

The exponential regression function to model the situation is:

y = ab^x

where,

y = flour in grams

x = number of weeks since the bakery opened

a = initial amount of flour (Y-intercept) = 400,000 grams

b = growth factor

To find the value of b, we can use any two points from the table. Let's use the first and second points.

When x = 0, y = 400,000

When x = 1, y = 336,400

Substituting these values in the equation, we get:

400,000 = ab^0

336,400 = ab^1

Simplifying these equations, we get:

a = 400,000

b = 0.841

Therefore, the exponential regression function is:

y = 400,000(0.841)^x

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Scientists estimate that the mass of the sun is 1. 9891 x 10 kg. How many zeros are in this


number when it is written in standard notation?


A 26


B 30


C 35


D 25

Answers

There are 30 zeros in the mass of the sun which is 1.9891 x 10³⁰ kg when it is written in standard notation. The correct answer is option B.

To determine how many zeros are in the mass of the sun (1.9891 x 10³⁰ kg) when it is written in standard notation, you first need to recognize that the provided mass is not written correctly. It should be written as 1.9891 x 10^n kg, where n is an integer representing the exponent.

The actual mass of the sun is 1.9891 x 10³⁰ kg. When written in standard notation, this number would be:

1,989,100,000,000,000,000,000,000,000,000 kg

There are 30 zeros in this number when written in standard notation.

So, the correct answer is B) 30.

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Question 1 < Σ Use integration by parts to evaluate the definite integral: 2t sin( – 9t)dt = 5.25л ба

Answers

The value of the definite integral 2t sin(-9t)dt from 0 to π is 5.25π.

To evaluate the definite integral 2t sin(-9t)dt using integration by parts, we first need to choose u and dv.

Let u = 2t and dv = sin(-9t)dt. Then du/dt = 2 and v = (-1/9)cos(-9t).

Using the integration by parts formula ∫udv = uv - ∫vdu, we can evaluate the definite integral as follows: ∫2t sin(-9t)dt = [-2t/9 cos(-9t)] - ∫(-2/9)cos(-9t)dt

Next, we need to evaluate the integral on the right-hand side.

Let u = -2/9 and dv = cos(-9t)dt. Then du/dt = 0 and v = (1/9)sin(-9t).

Using integration by parts again, we get: ∫cos(-9t)dt = (1/9)sin(-9t) + ∫(1/81)sin(-9t)dt = (1/9)sin(-9t) - (1/729)cos(-9t)

Substituting this result back into the original equation, we get: ∫2t sin(-9t)dt = [-2t/9 cos(-9t)] - [(-2/9)(1/9)sin(-9t) + (2/9)(1/729)cos(-9t)]

Now, we can evaluate the definite integral by plugging in the limits of integration (0 and π) and simplifying:

∫π0 2t sin(-9t)dt

= [-2π/9 cos(-9π)] - [(-2/9)(1/9)sin(-9π) + (2/9)(1/729)cos(-9π)] - [(-2/9)cos(0)]

= [-2π/9 cos(9π)] - [(-2/9)(1/9)sin(9π) + (2/9)(1/729)cos(9π)] - [(-2/9)cos(0)]

= [-2π/9 (-1)] - [(-2/9)(1/9)(0) + (2/9)(1/729)(-1)] - [(-2/9)(1)]

= (2π/9) + (2/6561) + (2/9) = 5.25π

Therefore, the value of the definite integral 2t sin(-9t)dt from 0 to π is 5.25π.

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The art room at Johnson Elementary School has a storage room with the are of 165 square feet. The length of one wall is 15 feet. What is the width of the storage room? What is the perimeter of the room?

Answers

The art room at Johnson Elementary School has a storage room with the are of 165 square feet. The length of one wall is 15 feet. The width of the storage room 11 feet. The perimeter of the room is 52 feet.

Find the width of the storage room, we need to use the formula for area:
Area = Length x Width
We know that the area is 165 square feet and the length is 15 feet, so we can plug those values in and solve for the width:
165 = 15 x Width
Width = 11
So the width of the storage room is 11 feet.
Find the perimeter of the room, we need to add up the lengths of all four walls. We know that one wall is 15 feet, and since the opposite wall must also be 15 feet to maintain the same area, we can add up the remaining two walls:
Perimeter = 2 x (15 + Width)
Perimeter = 2 x (15 + 11)
Perimeter = 2 x 26
Perimeter = 52
So the perimeter of the storage room is 52 feet.

The width of the storage room 11 feet. The perimeter of the room is 52 feet.

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Each of the letters from the word PROBABILITY are written on a card and placed in a bag. What is the probability of choosing


vowel expressed as a decimal? Assume "Y" is a consonant

Answers

The probability of choosing a vowel from the word PROBABILITY, expressed as a decimal, is approximately 0.364.

To find the probability of choosing a vowel from the word PROBABILITY, you'll need to follow these steps:

1. Identify the total number of letters in the word: There are 11 letters in the word PROBABILITY.
2. Identify the number of vowels in the word: There are 4 vowels (O, A, I, and I).
3. Calculate the probability by dividing the number of vowels by the total number of letters: Probability = (number of vowels) / (total number of letters) = 4/11.

A decimal indication that the probability of selecting a vowel from the word PROBABILITY is roughly 0.364.

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The height of the roof is 30ft and the radius of the base is 15tf. what is the area of the roof? what is the lateral surface area of the roof

Answers

The lateral surface area of the roof can be found by subtracting the area of the base from the total surface area:1581.84 sq ft

Assuming the roof is a cone:

The slant height of the cone can be found using the Pythagorean theorem:

l = √(r^2 + h^2) = √(15^2 + 30^2) = 33.541 ft

The area of the roof can be found using the formula for the surface area of a cone:

A = πr^2 + πrl = π(15)^2 + π(15)(33.541) ≈ 1800.66 sq ft

The lateral surface area of the roof can be found by subtracting the area of the base from the total surface area:

L = πrl = π(15)(33.541) ≈ 1581.84 sq ft

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Cam can't figure out what to eat. He is going to randomly select a piece of fruit from his pantry. There are
4
44 apples and
5
55 bananas in his pantry.
What is
P(select an apple
)
P(select an apple)start text, P, left parenthesis, s, e, l, e, c, t, space, a, n, space, a, p, p, l, e, end text, right parenthesis?
If necessary, round your answer to
2
22 decimal places.

Answers

If Cam randomly selects a piece of fruit from his pantry, the probability of selecting an apple is 4/9 or 0.44.

To find the probability of selecting an apple, we need to divide the number of apples by the total number of fruits in Cam's pantry.

Total number of fruits = number of apples + number of bananas = 4 + 5 = 9

P(select an apple) = number of apples / total number of fruits = 4/9

So, the probability of selecting an apple is 4/9 or approximately 0.44 when rounded to two decimal places.

Therefore, the probability is 4/9 or 0.44.

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Complete question is:

Cam can't figure out what to eat. He is going to randomly select a piece of fruit from his pantry. There are 4 apples and 5 bananas in his pantry.

What is P(select an apple)?

If necessary, round your answer to 2 decimal places.

There are a total of 2. 1 x 10 to the 6 power vehicles registered in New York City These are distributed among the 5 boroughs of the city. What is the average number of vehicles registered in each borough of NYC? Give your answer in scientific notation

Answers

The average number of vehicles registered in each borough of NYC is 4.2 x 10^5.

To find the average number of vehicles registered in each borough of NYC, we need to divide the total number of registered vehicles by the number of boroughs. Therefore, the average number of vehicles registered in each borough can be calculated as:

Average number of vehicles = Total number of vehicles registered / Number of boroughs

= 2.1 x 10^6 / 5

= 4.2 x 10^5

Therefore, the average number of vehicles registered in each borough of NYC is 4.2 x 10^5.

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Which answer gives the correct transformation of P(x) to get to I(x)?



A. ) I(x)=P(1/2x)


B. ) I(x)=P(2x)


C. ) I(x)=1/2P(x)


D. ) I(x)=2P(x)

Answers

The answer that gives the correct transformation of P(x) to get to I(x) is option D) I(x) = 2P(x).

This means that the function I(x) is obtained by multiplying the function P(x) by 2.

To understand why this is the correct transformation, let's consider an example:

Suppose P(x) represents the number of items produced by a factory in x hours. If we want to find the number of items produced by the factory in 2x hours, we can use the transformation I(x) = 2P(x). This is because the rate of production is constant, so in twice the time, the factory will produce twice the number of items. Therefore, multiplying the function P(x) by 2 gives us the function I(x) that represents the number of items produced by the factory in 2x hours.

Option A) I(x) = P(1/2x) means that we are compressing the function P(x) horizontally, which would result in a faster rate of change. This transformation does not make sense in the context of the problem and is not the correct transformation.

Option B) I(x) = P(2x) means that we are stretching the function P(x) horizontally, which would result in a slower rate of change. This transformation also does not make sense in the context of the problem and is not the correct transformation.

Option C) I(x) = 1/2P(x) means that we are reducing the function P(x) by half, which would result in a slower rate of change. This transformation does not match the problem statement and is not the correct transformation.

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