You spin a spinner that has 12 equal-sized sections numbered 1 to 12. Find the probability of p(less than 5 or greater than 9)

Answers

Answer 1

The probability of getting a number less than 5 or greater than 9 is:

P = 0.583

How to find the probability for the given event?

The probability is equal to the quotient between the number of outcomes for the given event and the total number of outcomes.

The numbers that are less than 5 or greater than 9 are:

{1, 2, 3, 4, 10, 11, 12}

So 7 out of the total of 12 outcomes make the event true, then the probability we want to get is the quotient between these numbers:

P = 7/12 = 0.583

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Related Questions

A triangle has sides of length 12, 17, and 22. of the measures of the three interior angles, which is the greatest of the three

Answers

The greatest of the three interior angles in the triangle is approximately 71.2 degrees.

To find out which of the three interior angles in the triangle is the greatest, we can use the fact that the largest angle is opposite the longest side. So, in this case, the longest side is 22, which means that the angle opposite it must be the greatest. We can use the Law of Cosines to find the measure of this angle:

c^2 = a^2 + b^2 - 2ab*cos(C)

where c is the length of the side opposite angle C, and a and b are the lengths of the other two sides. Plugging in the values we know, we get:

22^2 = 12^2 + 17^2 - 2*12*17*cos(C)

484 = 144 + 289 - 408*cos(C)

51 = 408*cos(C)

cos(C) = 51/408

C = cos^-1(51/408)

C ≈ 71.2 degrees

So the greatest of the three interior angles in the triangle is approximately 71.2 degrees.

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Answer this question fast please

Answers

The probability that a randomly selected student prefers the arts or does not prefer literature is 8/11.

There are different ways to approach this problem, but one possible method is to use the concept of complement events.

First, we can calculate the probability of a randomly selected student preferring the arts. This is simply the proportion of students in the sample who prefer the arts, which is 9 out of 3+9+10 = 22. So, the probability is:

P(arts) = 9/22

Next, we can calculate the probability of a randomly selected student preferring literature. This is the proportion of students in the sample who prefer literature, which is 7+8 = 15 out of 22. So, the probability is:

P(literature) = 15/22

To find the probability of a student preferring the arts or not preferring literature, we can use the complement event that consists of students who do not prefer literature. This is the complement of the event "preferring literature", and its probability is:

P(not literature) = 1 - P(literature) = 1 - 15/22 = 7/22

Finally, we can use the addition rule for disjoint events (i.e., events that cannot occur at the same time) to calculate the probability of the event "preferring the arts or not preferring literature".

Since these events are not mutually exclusive (i.e., some students may prefer both the arts and literature), we need to subtract their intersection (i.e., students who prefer both) to avoid double-counting. Therefore, the probability is:

P(arts or not literature) = P(arts) + P(not literature) - P(arts and literature)

= 9/22 + 7/22 - 0

= 16/22

= 8/11

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let f be the function defined above. what is the integral of f(x) from -1 to 1

Answers

The value of given function [tex]\int\limits^1_{-1}[/tex]f(x)dx is equal is 5/6. So, correct option is A.

To find the integral of f(x) from -1 to 1, we need to split the interval [-1,1] into three parts, where f(x) is defined differently.

For x < 0, f(x) = x², so the integral of f(x) from -1 to 0 is:

[tex]\int\limits^0_{-1}[/tex](x²)dx = (-1/3)x³ evaluated at x=0 and x=-1 = (-1/3)(0 - (-1)) = 1/3

For x = 0, f(x) = -1, so the integral of f(x) at x=0 is simply -1.

For x > 0, f(x) = x, so the integral of f(x) from 0 to 1 is:

[tex]\int\limits^1_{0}[/tex](x)dx = (1/2)x² evaluated at x=1 and x=0 = (1/2)(1 - 0)² = 1/2

Therefore, the integral of f(x) from -1 to 1 is:

[tex]\int\limits^1_{-1}[/tex]f(x)dx = [tex]\int\limits^0_{-1}[/tex](x²)dx  + [tex]\int\limits^0_{0}[/tex](-1)dx + [tex]\int\limits^1_{0}[/tex](x)dx

= 1/3 + (-1) + 1/2

= 5/6

Thus, the correct answer is (a) 5/6.

So, correct option is A.

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A gym offers a trial membership for 2 months. It discounts the regular monthly fee, f, by $15. Logan would like to sign up if the total price of the trial membership is less than $60. Which inequality could help Logan determine if he would like to sign up?

Answers

If he would like to sign up, then the inequlity could help Logan is defined as 2x ≤ 30, where, x --> monthly fee.

Inequality is defined as the 'not equal'. An inequality is a statement that shows a non-equal comparison between two numbers or mathematical expressions and expresses relationship between them. The symbols used for showing inequality are <, > , ≤, ≥. We have a gym offers a 2 months trials membership. The discounts the regular monthly fee, f

= $ 15

Now, Logan interested to sign up. Total price trial membership is less than $60. Let the total price of trial membership and regular monthly fee be P dollars and x dollars respectively. So, P ≤ $60 and P

= 2x - 2×15 = 2x - 30

If he would like to sign up, then the inequlity could help Logan is defined as below, 2x - 30 ≤ 60. Hence, required inequlity is 2x ≤ 30.

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If the area of the top of a cylinder is 16 square cm and the height is 8 cm, what is the volume of the cylinder?
Answers:
A. 128 cm cubed
B. 512 cm cubed
C. 256 cm cubed
D. 64 cm cubed

Answers

The answer is A. 128 because 16x8=128

A. 128CM CUBED

Step-by-step explanation:

THE FORMULLA : it's v(volume) =AB (BAZE AREA OR TOP AREA ) × HEIGHT SO

16 SQUARE CM ×8CM

=128CM CUBED

Quadrilateral ABCD is a square with diagonals AC and BD. If A(4, 9) and C(3, 2), find the slope of BD.

Answers

7 is the slope of BD in Quadrilateral.

What in arithmetic is a quadrilateral?

Four sides, four vertices, and four angles make up a quadrilateral, which is a two-dimensional form. Concave and convex are the two most common forms. Additionally, there are several subgroups of convex quadrilaterals, including trapezoids, parallelograms, rectangles, rhombus, and squares.

                                 There are four closed sides to a quadrilateral. Quadrilaterals are the following figures: produced by Raphael. a quadrilateral form. The form features a single pair of parallel sides and no right angles.

points A(4, 9) and C(3, 2)

      slope = y₂ - y₁/x₂ - x₁

                =  2 - 9/3 - 4

                = - 7/-1

                = 7

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My sister is 16 years old. My brother says that his age minus nighteen is equal to my sister's age. How old is my brother? Write a equation with b as variable

Answers

The brother is 35 years old.

How to use the variable "b" to represent the brother's age?

Let's use the variable "b" to represent your brother's age.

According to the problem, your brother's age minus nineteen (b - 19) is equal to your sister's age, which is 16. So we can write an equation:

b - 19 = 16

To solve for b, we can add 19 to both sides of the equation:

b - 19 + 19 = 16 + 19

Simplifying, we get:

b = 35

Therefore, your brother is 35 years old.

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You bike 2 miles the first day of your​ training, 2.3 miles the second​ day, 2.9 miles the third​ day, and 4.1 miles the fourth day. If you continue this​ pattern, how many miles do you bike the seventh​ day?

Answers

2 miles —+0.3–> 2.3 miles
2.3 —+0.6–> 2.9 miles
2.9 —+1.2–> 4.1 miles
Every time it multiples by 2, so
5th day = 4.1 + 2.4 = 6.5 miles
6th day = 6.5 + 4.8 = 11.3 miles
—> 7th day = 11.3 + 9.6 = 20.9 miles

Answer: 20.9 miles - 7th day

An a frame house has a front facade measuring 30' across and 20' in height what is the area of the facade

Answers

The area of the facade measuring 30' across and 20' in height is 300 square feet.

The front facade of an A-frame house is a triangular shape, with a base of 30 feet and a height of 20 feet. To calculate the area of the facade, we need to use the formula for the area of a triangle, which is 1/2 times the base times the height = 1/2 * b * h, where b is the base and h is the height.

In this case, the base is 30 feet and the height is 20 feet, so we can plug those values into the formula:

Area = 1/2 x 30 x 20

Simplifying the multiplication, we get:

Area = 300 square feet

Therefore, the area of the front facade of the A-frame house is 300 square feet.

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Use the aleks calculator to evaluate each expression.
round your answers to the nearest hundredth.

tan 33°

cos 42°

sin 70°

Answers

When rounded to the nearest hundredth, the result of the expression tan 33° × cos 42° × sin 70° is approximately 0.4511 .

To evaluate the given expression using the terms tan 33°, cos 42°, and sin 70°, you can use a scientific calculator or an online tool like the ALEKS calculator.

After evaluating each term, you would multiply the values together and round the result to the nearest hundredth. Here's the breakdown:

tan 33° ≈ 0.6494
cos 42° ≈ 0.7431
sin 70° ≈ 0.9397

Now multiply the values:

0.6494 × 0.7431 × 0.9397 ≈ 0.4511

So, the result of the expression tan 33° × cos 42° × sin 70° is approximately 0.4511 when rounded to the nearest hundredth.

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If it takes 15 minutes to complete a lap aaround a park, what fraction of a lap has the runner run in 9 minutes,assuming she runs a constant pace?

Answers

Answer:

3/5

Step-by-step explanation:

If it takes 15 minutes to complete one lap around the park, then the runner completes 1/15 of a lap in 1 minute.

To find out what fraction of a lap the runner completes in 9 minutes, we can multiply the fraction completed in 1 minute by the number of minutes elapsed:

Fraction completed in 9 minutes = (1/15) x 9 = 9/15 = 3/5

Therefore, the runner has completed 3/5 of a lap in 9 minutes

3 15, 18, 16, 18, 19, 22
Mean = 1
Median = 18
Mode = 14

Answers

Answer:

Mean=15.86

Median=18

Mode=18

Simplify to create an equivalent expression. {2(-2-4p)+2(-2p-1)}2(−2−4p)+2(−2p−1)

Answers

4(-2 - 4p) + 4(-2p - 1)

How can the expression {2(-2-4p)+2(-2p-1)} be simplified?

To simplify the expression {2(-2-4p)+2(-2p-1)}, we can distribute the coefficients and simplify the terms.

First, let's distribute the coefficient of 2 to the terms inside the first parentheses: 2 * -2 = -4 and 2 * -4p = -8p.

Next, distribute the coefficient of 2 to the terms inside the second parentheses: 2 * -2p = -4p and 2 * -1 = -2.

Now, we have:

{-4 - 8p + (-4p - 2)}

Next, combine like terms within the parentheses:

{-4 - 8p - 4p - 2}

Simplifying further:

{-6 - 12p}

Therefore, the simplified equivalent expression for {2(-2-4p)+2(-2p-1)} is -6 - 12p.

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Joey needs to buy chocolate milk they only sell it in pint containers how many pint containers of chocolate milk should he buy

Answers

To determin how many pint containers of chocolate milk Joey should buy, we need to know how much chocolate milk he wants in total.

Let's assume Joey wants to buy "x" pints of chocolate milk. Then, the total amount of chocolate milk he will get in quarts can be calculated as:

Total amount of chocolate milk = x pints/2 pints per quart = x/2 quarts

If Joey has a specific total amount of chocolate milk he wants to buy, we can solve for "x". For example, if Joey wants to buy 3 quarts of chocolate milk, we can set up the following equation:

x/2 = 3

Multiplying both sides by 2, we get:

x = 6

So, Joey needs to buy 6 pint containers of chocolate milk to get 3 quarts in total.

If Joey has a different desired amount of chocolate milk, we can adjust the equation accordingly to find the number of pint containers he needs to buy

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please help asap!!, the image is attached, 30 points !!

Answers

21.75 or 21 & 3/4, because 3 time 7.25 is 21.75

Help with the problem in photo

Answers

The measure of the unknown arc is 76°

What is arc angle relationship?

An arc is a smooth curve joining two endpoints. It can also be defined as a portion of a circle.

Arc angle relationship states that If two chords intersect inside a circle, then the measure of each angle is one-half the sum of the measures of the arcs intercepted by the angle and its vertical angle.

Therefore angle 30° = 1/2 ( x-61)

30 = 1/2( x -61)

15 = x -61

x = 15 + 61

x = 76°

therefore the measure of the unknown arc is 76°

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A box of tissues is shaped like a rectangular prism and has a volume of 288 cubic inches.

Answers

We can also pair 3 and 96, since 3 x 96 = 288. This means that the length of the rectangular prism could be 96 inches and the width could be 3 inches.

How to find the volume?

To find the dimensions of the rectangular prism, we can use the formula for the volume of a rectangular prism, which is:

V = l x w x h

where V is the volume, l is the length, w is the width, and h is the height.

We know that the volume of the box of tissues is 288 cubic inches. We want to find the length, width, and height.

We can start by listing all the factors of 288:

1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 288

We can see that some of these factors are repeated, so we can pair them up to find the dimensions of the rectangular prism.

For example, we can pair 2 and 144, since 2 x 144 = 288. This means that the length of the rectangular prism could be 144 inches and the width could be 2 inches.

We can also pair 3 and 96, since 3 x 96 = 288. This means that the length of the rectangular prism could be 96 inches and the width could be 3 inches.

We can continue pairing the factors until we find all the possible combinations. Once we have all the possible combinations, we can choose the one that makes the most sense based on the context of the problem (in this case, the dimensions of a box of tissues).

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<
Which expression represents the surface area of the prism?
Choose 1 answer:
2.3+3.8
2.6+12+8+8
3+3+12+8+8
12+12+12+3+3

Answers

The answer of the given question based on the right triangular prism is , the surface area of the prism is,

(D) 2.6 + 12 + 8 + 8 = 30.

Since, A right triangular prism is a three-dimensional solid that has two congruent, parallel triangular faces (also known as bases) and three rectangular faces that connect the bases at right angles. The perpendicular distance between the two bases is called the height of the prism.

To find the surface area of the prism, we need to calculate the area of each of its faces and then add them up.

The prism has two congruent triangular faces and three rectangular faces.

The area of each triangular face is equal to one-half the product of the base and height, which gives:

1/2 x 3 x 12 = 18

The area of each rectangular face is equal to the product of its length and width, which gives:

8 x 3 = 24 (two of these faces)

12 x 8 = 96 (one of these faces)

Therefore, total surface area of  prism is given by:

2 x 18 + 2 x 24 + 96 = 60 + 96 = 156

So, the correct expression that represents the surface area of the prism is option,

(D) 2.6 + 12 + 8 + 8 = 30.

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In a circle, the acr length of an intercepted arc is ten inches. The radius of the circle measures 2 inches. What is the measure of the central angle that intercepts that acr?

Answers

The measure of the central angle that intercepts the arc of the circle is approximately 286.48 degrees.

A circle's circumference is comprised of arcs. In other words, if you draw any two locations on a circle's circumference, the curved line that joins them around the border of the circle is referred to as an arc.

The formula for the relationship between arc length and central angle is:

arc length = radius x central angle

We are given the arc length and radius, so we can solve for the central angle:

10 = 2 x central angle

Dividing both sides by 2, we get:

central angle = 10/2

= 5 radians

To convert from radians to degrees, we multiply by 180/π:

central angle = 5 x 180/π

≈ 286.48 degrees.

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A pathway made of slate tiles measures​ 5 1/3 ​yards long. A tile measuring ​2​ feet is added to the end of the pathway.

What is the total length of the pathway now?

1. 5 1/3 ft

2. 10 2/3 ft

3. 18 ft

4. 22 ft

Answers

Answer:

18 feet

Step-by-step explanation:

multiply 5 1/3 yards by 3 to find the measurement in feet.

16/3 x 3 = 16

16 + 2 = 18

Helping in the name of Jesus.

the answer to this question is (c)18 feet

Find the highest common factor (HCF) of 12x^12 and 16x^16

Answers

Answer:

Step-by-step explanation:

To find the highest common factor (HCF) of 12x^12 and 16x^16, we need to factor both expressions.

12x^12 = 2^2 * 3 * (x^2)^6

16x^16 = 2^4 * (x^2)^8

The common factors of 12x^12 and 16x^16 are 2^2 and (x^2)^6. To find the HCF, we take the product of these common factors:

HCF = 2^2 * (x^2)^6 = 4x^12

Therefore, the highest common factor (HCF) of 12x^12 and 16x^16 is 4x^12.

point P is the image of p(-2,-2) translated by 1 unit to the left and 3 units now

Answers

To find the image of point P(-2,-2) translated 1 unit to the left and 3 units down, we subtract 1 from the x-coordinate and 3 from the y-coordinate to get coordinates of P' as: (-3, -5).

How to Find the Coordinates in Translation?

To translate a point to the left, we subtract from its x-coordinate, and to translate it down, we subtract from its y-coordinate.

Therefore, to translate P(-2, -2) 1 unit to the left and 3 units down, we subtract 1 from the x-coordinate and 3 from the y-coordinate to get P'(-3, -5) as the image of P after translation.

Therefore, the coordinates of P' are (-3, -5).

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Complete Question:

Point P' is the image of P(-2,-2) translated by 1 unit to the left and 3 units down. What are the coordinates of P'?

Use vector notation to describe the points that lie in the given configuration. (Let t be an element of the Reals.) the line passing through (−1,−1,−1) and (8,−1,6)

Answers

As an illustration, at t = 0, we obtain the point (-1, -1, -1), and at t = 1, we obtain the point (8, -1, 6), which are the line's two endpoints.

what is vector ?

A vector is a dimensionless parameter in mathematics that has both its magnitude as well as its direction. A vector can be visualised geometrically as an arrow, with the direction and length of the arrow denoting the magnitude and direction of the vector, respectively. A column can be formally described as a component of a feature space. A vector space is a group of things (referred to as vectors) that may be added to and multiplied by scalars, which are often real numbers, in a way that complies with specific axioms. Flow rates, forces, and fields of electricity and magnetism are only a few of the many different types of quantities that can be represented by vectors.

given

Using vector notation, we can write the following for the line that passes through the points (-1, -1, -1) and (8, -1, 6):

r = (-1, -1, -1) + t(9, 0, 7) (9, 0, 7)

The direction of the line is indicated by the vector (9, 0, 7), which is created by deducting the position vectors of the first and second points. We may generate every point along the line by changing the value of the parameter t.

As an illustration, at t = 0, we obtain the point (-1, -1, -1), and at t = 1, we obtain the point (8, -1, 6), which are the line's two endpoints.

We obtain various places on the line for varying values of t.

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Find the volume of the solid generated by revolving the region bounded by the curve y=7secx and the line y=72 over the interval − π 4≤x≤ π 4 about the​ x-axis.

Answers

To find the volume of the solid generated by revolving the region bounded by the curve y=7secx and the line y=72 over the interval − π/4≤x≤π/4 about the​ x-axis, we can use the method of cylindrical shells.

First, we need to find the equation of the curve of the region being revolved. We have y=7secx and y=72, so at the intersection point, we have 7secx=72, which gives us secx=10.285. Taking the inverse secant function of both sides, we get x=1.37 (approximately).

Now, we can set up the integral for the volume using cylindrical shells. The radius of each shell is y-72, and the height of each shell is 2π times the distance from x to the intersection point, which is x-1.37. The integral is:

V = ∫(2π)(y-72)(x-1.37) dx, from -π/4 to π/4

We can substitute y=7secx into the integral:

V = ∫(2π)(7secx-72)(x-1.37) dx, from -π/4 to π/4

Using integration by parts, we can evaluate the integral:

V = (2π)[(7/2)ln|secx+tanx| - 72x + (1.37)(7/2)ln|secx+tanx| + 46.8] from -π/4 to π/4

V = (2π)(7/2)(ln|11+6√3| + ln|11-6√3| + 1.37ln|11+6√3| + 1.37ln|11-6√3| - 144)

V ≈ 305.64 cubic units.

Therefore, the volume of the solid generated by revolving the region bounded by the curve y=7secx and the line y=72 over the interval − π/4≤x≤ π/4 about the​ x-axis is approximately 305.64 cubic units.
To find the volume of the solid generated by revolving the region bounded by the curve y=7sec(x) and the line y=72 over the interval -π/4≤x≤π/4 about the x-axis, you can use the disk method. The formula for the disk method is:

Volume = π * ∫[R(x)² - r(x)²] dx from a to b

In this case, R(x) represents the outer radius, which is given by y=72, and r(x) represents the inner radius, which is given by y=7sec(x). The limits of integration are a=-π/4 and b=π/4. Therefore, the volume can be calculated as:

Volume = π * ∫[72² - (7sec(x))²] dx from -π/4 to π/4

Now, evaluate the integral and multiply by π to find the volume of the solid.

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"first one could you use the product rule or the quotient rule
whichever applies and simplify within reason please, for last two
take the deratives usinh tbe chain rule, product rule or quotient
rule o
2 (+ }+) 2x+ + 3 (5x + 2) k(x) = ) 6x = 7 (8) The profit (in hundreds of dollars) from selling * units of a product is given by -2 the profit function P(x) =- Find the marginal profit when 4 units a" are produced
and sold and interpret your answer using words, numbers and units. Be very specific.
(Round the number part of your answer to the nearest cent.)

Answers

For the first equation, we can use the product rule. Let f(x) = 2x+ and g(x) = 5x+2. Then, f'(x) = 2 and g'(x) = 5. Using the product rule formula, we get:

k'(x) = f(x)g'(x) + g(x)f'(x)
k'(x) = (2x+)(5) + (5x+2)(2)
k'(x) = 10x+ + 4x+10

For the profit function, P(x) = -2x^2 + 6x + 7, we can use the derivative to find the marginal profit. The derivative of P(x) is:

P'(x) = -4x + 6

To find the marginal profit when 4 units are produced and sold, we plug in x = 4 into P'(x):

P'(4) = -4(4) + 6
P'(4) = -10

Therefore, the marginal profit when 4 units are produced and sold is -10 hundred dollars or -$1,000. This means that for each additional unit produced and sold beyond the initial 4 units, the profit will decrease by $1,000.
Hi! It seems that your question has some missing information and typos, but I'll try my best to help you with the given data. The main task here is to find the marginal profit when 4 units are produced and sold, and interpret the answer.

The profit function P(x) appears to be incomplete. However, since we're asked to find the marginal profit, we need to take the derivative of the profit function with respect to x. Marginal profit is the derivative of the profit function with respect to the number of units sold (x). We can use the chain rule, product rule, or quotient rule to find the derivative, depending on the given profit function.

Once we have the derivative, we can evaluate it at x = 4 to find the marginal profit when 4 units are produced and sold. The result will indicate how much additional profit (in hundreds of dollars) the company will gain for producing and selling one more unit.

Please provide the complete profit function P(x), and I will be glad to help you find the marginal profit and interpret the answer.

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Question 1 4 pts 1 Details Suppose that the position of a particle is given by 8 = f(t) = 56° +61 +9. (a) Find the velocity at time t. m2 v(t) = 8 (b) Find the velocity at time t = 3 seconds. m (c) Find the acceleration at time t. a(t) = m 32 (d) Find the acceleration at time t = 3 seconds. m/s^2

Answers

The velocity at time t is 56 + 6 m/s, the velocity at time t = 3 seconds is 62 m/s, the acceleration at time t is 0 m/s², and the acceleration at time t = 3 seconds is 0 m/s².

Hi, I can help you with your question involving acceleration, time, and a particle.

(a) To find the velocity at time t (v(t)), take the first derivative of the position function f(t) = 56t + 6t + 9.

v(t) = d(56t + 6t + 9)/dt = 56 + 6

(b) To find the velocity at time t = 3 seconds, plug in t = 3 into the velocity function:

v(3) = 56 + 6 = 62 m/s

(c) To find the acceleration at time t (a(t)), take the first derivative of the velocity function v(t) = 56 + 6:

a(t) = d(56 + 6)/dt = 0

(d) To find the acceleration at time t = 3 seconds, since the acceleration is constant (a(t) = 0), it remains the same for all time:

a(3) = 0 m/s²

So, the velocity at time t is 56 + 6 m/s, the velocity at time t = 3 seconds is 62 m/s, the acceleration at time t is 0 m/s², and the acceleration at time t = 3 seconds is 0 m/s².

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A sheet of paper 82 cm-by-88 cm is made into an open box (i.e. there's no top), by cutting X-cm squares out of each corner and folding up the sides. Find the value of x that maximizes the volume of the box. Give your answer in the simplified radical form. X= is the max.

Answers

The value of x that maximizes the volume of the box is x=11 cm.

Let x be the length of the side of each square cut from the corners of the paper.

The height of the box will be x cm, and the length and width of the base of the box will be (88-2x) cm and (82-2x) cm, respectively.

The volume of the box is given by V(x) = x(88-2x)(82-2x).

Expanding this expression and simplifying, we get V(x) = 4x^3 - 340x^2 + 7040x.

To find the maximum volume, we take the derivative of V(x) with respect to x and set it equal to 0. We get dV/dx = 12x^2 - 680x + 7040 = 0.

Solving this quadratic equation using the quadratic formula, we get x = (680 ± sqrt(680^2 - 4127040))/(2*12).

Simplifying this expression, we get x = (680 ± 120)/24.

Therefore, the two possible values of x are x = 25/3 cm and x = 11 cm.

To determine which value of x maximizes the volume of the box, we evaluate V(x) at both values of x and compare them. We find that V(25/3) ≈ 5757.04 cm^3 and V(11) = 5808 cm^3.

Therefore, the value of x that maximizes the volume of the box is x = 11 cm.

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The National Vital Statistics Reports for November 2011 states that U. S. Cesarean delivery rate for 2010 was about 32. 8%. Cesarean delivery is also called a "C-section. " It means the baby is not delivered in the normal way. The baby is surgically removed through an incision in the mother’s abdomen and uterus. Suppose this year a random sample of 100 births has 41 that are C-sections. Use the estimate from the NVS Report for 2011 as the population proportion, p, and the result from this year’s random sample to estimate the U. S. Cesarean delivery rate for this year with 95% confidence. (Be sure to check that a normal model is appropriate. )

Answers

The 95% confidence interval for the U.S. Cesarean delivery rate for this year is approximately (0.3314, 0.4886) or 33.14% to 48.86%.

How to find the delivery rate for a particular year using a sample and a population proportion estimate from a previous report?

To estimate the U.S. Cesarean delivery rate for this year with 95% confidence using the provided information, we can construct a confidence interval for the population proportion.

Given:

Population proportion estimates from the NVS Report for 2011: p = 0.328 (32.8%)

Sample size: n = 100

Number of C-sections in the sample: x = 41

First, we need to check if a normal model is appropriate for the sample proportion. For this, we can verify if the sample size is sufficiently large and if both np and n(1-p) are greater than 10.

np = 100 * 0.328 = 32.8

n(1-p) = 100 * (1 - 0.328) ≈ 67.2

Since both np and n(1-p) are greater than 10, we can assume that the conditions for a normal model are met.

Now, we can calculate the confidence interval using the sample proportion and the critical value corresponding to a 95% confidence level.

Sample proportion (p-hat) = [tex]\frac{x }{ n}[/tex] =[tex]\frac{ 41 }{ 100 }[/tex]= 0.41

The critical value for a 95% confidence level can be obtained from a standard normal distribution or a Z-table. In this case, the critical value is approximately 1.96.

The margin of error (E) can be calculated as:

E = Z * [tex]\sqrt((\frac{p-hat * (1 - p-hat))} { n})[/tex]

E = 1.96 * [tex]\sqrt((\frac{0.41 * (1 - 0.41))}{ 100)}[/tex]

E ≈ 0.0786

Finally, we can construct the confidence interval by subtracting and adding the margin of error from the sample proportion.

Confidence interval = p-hat ± E

Confidence interval = 0.41 ± 0.0786

Therefore, the 95% confidence interval for the U.S. Cesarean delivery rate for this year is approximately (0.3314, 0.4886) or 33.14% to 48.86%.

Note: It's important to consider that this calculation assumes the sample is representative of the U.S. population and that the conditions for a normal model are satisfied. Additionally, the estimate from the NVS Report for 2011 is used as the population proportion.

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Answer each one please 20 points! :3 and (brainly)

caden exercises daily by walking on a treadmill. he sets the machine so that he will walk at a steady rate of 3.6 miles per hour.
a. if t represents time in hours and d represents distance in miles, write an equation that models the relationship between these variables.-


b. use your equation to calculate the distance caden will walk in 3/4 of an hour.--


c. use your equation to calculate how long it will take for caden to walk 4.32 miles.--





answer each one please 20 points! :3 and (brainly)

Answers

a. If t represents time in hours and d represents distance in miles, and Caden walks at a steady rate of 3.6 miles per hour, the equation that models the relationship between these variables is:

d = 3.6t

b. To calculate the distance Caden will walk in 3/4 of an hour, plug 3/4 into the equation for t:

d = 3.6(3/4) = 2.7 miles

Caden will walk 2.7 miles in 3/4 of an hour.

c. To calculate how long it will take for Caden to walk 4.32 miles, plug 4.32 into the equation for d and solve for t:

4.32 = 3.6t
t = 4.32/3.6 ≈ 1.2 hours

It will take Caden approximately 1.2 hours to walk 4.32 miles.

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Esteban has `3` kittens. According to the vet, each kitten is born with blue eyes and there is a `50\%` chance of it changing color once they reach three months.






Esteban decides to run a simulation using `3` coins, where heads represent the eyes changing color.






The table shows the results of his simulation.






Estimate the probability that at least one of Esteban’s kittens will still have blue eyes at three months old

Answers

There is an estimated probability of 0.875 (or 87.5%) that at least one of Esteban's kittens will still have blue eyes at three months old.

Let's use the complement rule to estimate the probability that at least one kitten will still have blue eyes at three months old:

P(at least one kitten with blue eyes) = 1 - P(no kitten with blue eyes)

To estimate P(no kitten with blue eyes), we can use the results of Esteban's simulation. We can see from the table that all three coins came up tails (representing no color change) in row 8, so that's one outcome where no kitten has blue eyes. There are a total of 2^3 = 8 possible outcomes, so the estimated probability of no kitten having blue eyes is:

P(no kitten with blue eyes) = 1/8 = 0.125

Therefore, the estimated probability that at least one kitten will still have blue eyes at three months old is:

P(at least one kitten with blue eyes) = 1 - P(no kitten with blue eyes) = 1 - 0.125 = 0.875

So, there is an estimated probability of 0.875 (or 87.5%) that at least one of Esteban's kittens will still have blue eyes at three months old.

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