The area of the donut sign with a radius of 3 feet is approximately 84.8 square feet when rounded to the nearest 10th.
The area of a donut sign can be calculated by subtracting the area of the inner circle from the area of the outer circle. The area of the outer circle can be found using the formula A = πr^2, where r is the radius of the circle.
Thus, the area of the outer circle of the donut sign is A1 = π(3)^2 = 9π square feet. Similarly, the area of the inner circle is A2 = π(0.5)^2 = 0.25π square feet, where the radius of the inner circle is 0.5 feet (which is the radius of the circular hole in the donut sign).
Therefore, the area of the donut sign can be calculated as A1 - A2 = 9π - 0.25π = 8.75π square feet. Using the value of π ≈ 3.14, we get the area of the donut sign as approximately 27.43 square feet. Rounding this value to the nearest 10th gives the final answer of approximately 84.8 square feet.
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I’m having trouble with this
In a group of 20 people, 13 people like tea, 12 people like coffee and 3 people like neither tea nor coffee. How many people like tea but not coffee?
Answer:
8 people
Step-by-step explanation:
Tea- 13 people
Coffee- 12 people
Neither- 3 people
20 - 3 = 17
12 + 13 = 25
25 - 17 = 8
25 acres of a forest is covered by coniferous trees. The remaining are shrubs and bushes which constitutes 42% of the total area of the forest. What is the total area of under the forest?
Therefore, the total area of the forest is approximately 43.10 acres.
What is area?Area is the measure of the size of a two-dimensional surface or region. It is typically measured in square units, such as square meters (m²) or square feet (ft²). The area of a shape can be calculated by multiplying the length and the width of the shape. Different shapes have different formulas for calculating their area, such as the formula for the area of a rectangle, which is length x width, or the formula for the area of a circle, which is πr², where r is the radius of the circle and π is a mathematical constant approximately equal to 3.14159.
Here,
Let's call the total area of the forest "T".
We know that 25 acres of the forest is covered by coniferous trees. Therefore, the remaining area of the forest is:
T - 25
We also know that the shrubs and bushes constitute 42% of the total area of the forest. This means that:
0.42 x T = area covered by shrubs and bushes
Putting it all together, we can set up the following equation:
T = 25 + (0.42 x T)
Simplifying, we can solve for T:
0.58 x T = 25
T = 25 / 0.58
T = 43.10 acres (rounded to two decimal places)
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a driveway consists of two rectangles one rectangle is 80 ft long and 15 ft wide the other is 30 ft long and 30 ft wide what is the area of the driveway
Answer: 2100 square feet
Step-by-step explanation:
To solve this question we must add the areas of the two rectangles.
area = length x width
Rect 1:
a = lw
= 80 x 15 = 1200 square feet
Rect 2:
a = lw
= 30 x 30 = 900 square feet
so in total, the driveway is 1200 + 900 = 2100 square feet
Answer:
To find the area of the driveway, we need to find the area of both rectangles and add them together.
The area of the first rectangle is:
80 ft x 15 ft = 1200 sq ft
The area of the second rectangle is:
30 ft x 30 ft = 900 sq ft
To find the total area of the driveway, we add the two areas together:
1200 sq ft + 900 sq ft = 2100 sq ft
Therefore, the area of the driveway is 2100 square feet.
Find the slope of the line through points 6,3 and 12,7
The slope of the line through points (6,3) and (12,7) is 2/3.
To find the slope of a line, we use the formula:
Slope = (y2 - y1) / (x2 - x1)
In this case, we have two points: (6, 3) and (12, 7). We can label them as follows:
x1 = 6
y1 = 3
x2 = 12
y2 = 7
Now we can plug these values into the formula:
Slope = (y2 - y1) / (x2 - x1)
Slope = (7 - 3) / (12 - 6)
Slope = 4 / 6
Slope = 2/3
Therefore, the slope of the line through the points (6, 3) and (12, 7) is 2/3.
The slope of a line tells us how steep it is. A positive slope means the line goes up as you move from left to right, while a negative slope means the line goes down. In this case, since the slope is positive (2/3), we know that the line goes up as we move from left to right.
The slope also tells us how much the y-value changes for every one unit of x-value. In this case, for every one unit we move to the right, the y-value goes up by 2/3.
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Given the diagonals of square ABCD intersect at M. If the measure of
The value of x is 17.5 when the given diagonals of square ABCD points intersect at M and the measure 0f <MAD = 6x-15.
The diagonals are perpendicular bisectors of each other in a square and they intersect at the center of the square. By using diagonals we can divide the square into four congruent right triangles and assume that diagonals are all right angles (90 degrees).
let us consider the angle MAD as one of these angles. we can find the value of x by using the equation
6x - 15 = 90
6x = 105
x = 105/6
= 17.5.
Therefore, the value of the x is 17.5.
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The complete question is,
Given the diagonals of square ABCD points intersect at M: If the measure 0f <MAD = 6x-15, find the value of x Show the work that justifies your answer: M B Your answer
Plsss answer correctly and Show work for points!
Answer:
b=18.7
Step-by-step explanation:
sin112°/37=sin28°/b
b=sin28°/(sin112°/37)
b=18.7
The Rialto Theater sells balcony seats for $10 and main floor seats for
$25. One afternoon performance made $6250. The number of balcony
seats sold was 20 more than 3 times the number of main floor seats. Write
the system of equations to determine the number of main floor and
balcony seats.
The system of equations is:
Revenue from balcony seats = $10 × B
Revenue from main floor seats = $25 × M
Total revenue = $6250
B = 3M + 20
Let's define the following variables:
B = number of balcony seats sold
M = number of main floor seats sold
We know that the price of a balcony seat is $10 and the price of a main floor seat is $25.
From the given information, we can create the following equations:
The total revenue from balcony seats sold (B) is given by: Revenue from balcony seats = $10 × B
The total revenue from main floor seats sold (M) is given by: Revenue from main floor seats = $25 × M
The total revenue from the afternoon performance is $6250: Total revenue = Revenue from balcony seats + Revenue from main floor seats
The number of balcony seats sold (B) is 20 more than 3 times the number of main floor seats (M): B = 3M + 20
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Kyla has a concrete patio in the shape of a semi-circle. What is the area of the patio? Use 3. 14 for π. It’s s i circle and is 6. 75 ft and in squared
The area of the semi-circle patio is approximately 17.91 square feet.
To find the area of the semi-circle patio, we need to use the formula for the area of a circle, which is A = πr^2, where π is 3.14 and r is the radius of the circle.
However, since we only have a semi-circle, we need to divide the result by 2 to get the area of the half-circle.
In this case, the radius of the semi-circle is half of the diameter, which is given as 6.75 feet. So, the radius is 6.75/2 = 3.375 feet.
Now, we can plug this value into the formula:
A = (π)(3.375)^2 / 2
A = (3.14)(11.390625) / 2
A = 35.81765625 / 2
A = 17.908828125 square feet
Therefore, the area of the semi-circle patio is approximately 17.91 square feet.
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algebra 2 PLEASE if you know
The system of inequalities that has a solution set that is a line is [x + y ≥ 3; x + y ≤ 3]; option A
What is a system of inequalities?A system of inequalities is a set of two or more inequalities that are solved simultaneously to find the values of variables that satisfy all the inequalities in the system.
Considering the given system of inequalities:
The system of inequalities that has a solution set that is a line is:
[x + y = 3;]
This is because the solution set of this equation is a line with slope -1 passing through the point (3, 0) and (0, 3).
Therefore, the system of inequalities [x + y ≥ 3; x + y ≤ 3] has a solution set that is a line.
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ANALYZE In Europe, fuel economy is measured in liters per 100 kilometers. On a 2500 km road trip a car used 150 liters of fuel. The car used an average of how many liters per 100 km?
To find out the car's average fuel consumption in liters per 100 kilometers, we need to use the following formula:
Fuel consumption (liters per 100 km) = (Total fuel used / Total distance traveled) x 100
Using the information given, we know that the car traveled 2500 km and used 150 liters of fuel. Plugging these values into the formula, we get:
Fuel consumption (liters per 100 km) = (150 / 2500) x 100 = 6
Therefore, the car used an average of 6 liters of fuel per 100 kilometers on its 2500 km road trip.
It is important to note that fuel economy is an important factor in Europe, where fuel prices are generally higher than in other parts of the world.
By measuring fuel consumption in liters per 100 kilometers, European consumers can easily compare the fuel efficiency of different vehicles and make more informed purchasing decisions.
Additionally, analyzing fuel consumption data can help drivers identify ways to improve their fuel efficiency, such as reducing their speed, maintaining proper tire pressure, and avoiding excessive idling.
This not only saves money on fuel costs, but also reduces carbon emissions and contributes to a more sustainable transportation system.
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the operation manager at a tire manufacturing company believes that the mean mileage of a tire is 37,014 miles, with a standard deviation of 4617 miles. what is the probability that the sample mean would differ from the population mean by less than 221 miles in a sample of 56 tires if the manager is correct? round your answer to four decimal places.
Probability or p-vale that the sample mean would differ from the population mean by less than 221 miles in a sample of 56 tires is equals to zero if the manager is correct.
We have data of an operation manager at a tire manufacturing company.
Mean mileage of a tire, [tex] \mu[/tex]
= 37,014 miles
standard deviation, [tex] \sigma[/tex]
= 4617 miles.
Sample size, n = 56
We have to determine the probability that the sample mean would differ from the population mean by less than 221 miles. Using Z-score formula in normal distribution, [tex]\small z= \frac{ \bar x-\mu }{\frac{\sigma }{\sqrt{n}}},[/tex]
Plugging all known values in above formula, [tex]z = \frac{ 221 - 37,014} {\frac{4617}{ \sqrt{56}}}[/tex]
= 59.634
[tex]P( \bar x < 221) = P ( \frac{ \bar x-\mu }{\frac{\sigma }{\sqrt{n}}} < \frac{ 221 - 37,014} {\frac{4617}{ \sqrt{56}}}) \\ [/tex]
=> P ( z < 59.63) = P( \bar x < 221)
Using the Z-distribution table, probability value is equals to 0. Hence, required probability is zero.
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A lake is to be stocked with smallmouth and largemouth bass. Let represent the number of smallmouth bass and let represent the number of largemouth bass. The weight of each fish is dependent on the population densities. After a six-month period, the weight of a single smallmouth bass is given by and the weight of a single largemouth bass is given by Assuming that no fish die during the six-month period, how many smallmouth and largemouth bass should be stocked in the lake so that the total weight of bass in the lake is a maximum
To maximize the total weight of bass in the lake, we should stock 3000 smallmouth bass and 4666.67 largemouth bass
To maximize the total weight of bass in the lake, we need to find the optimal values of and that will maximize the total weight of the fish.
Let's start by writing an expression for the total weight of the fish in the lake:
Total weight = (weight of a single smallmouth bass) × (number of smallmouth bass) + (weight of a single largemouth bass) × (number of largemouth bass)
Substituting the given expressions for the weight of a single smallmouth bass and largemouth bass, we get:
Total weight = (0.5 + 0.1) × × + (1.2 + 0.2) ×
Simplifying this expression, we get:
Total weight = (0.6) × × + (1.4) ×
To find the optimal values of and that maximize the total weight, we can take the partial derivatives of this expression with respect to and and set them equal to zero:
[tex]∂ \frac{(Total weight)}{∂} = 0.6-0.0002=0[/tex]
[tex]∂ \frac{(Total weight)}{∂} = 1.4-0.0003=0[/tex]
Solving these equations simultaneously, we get:
= 3000
= 4666.67
Therefore, to maximize the total weight of bass in the lake, we should stock 3000 smallmouth bass and 4666.67 largemouth bass.
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Find the value(s) of k for which u(x,t) = e¯³ᵗsin(kt) satisfies the equation uₜ = 4uxx
The two values of k that satisfy the given equation are approximately 0.1449/t and 1.096/t.
We have the partial differential equation uₜ = 4uₓₓ. Substituting u(x,t) = e¯³ᵗsin(kt) into this equation, we get:
uₜ = e¯³ᵗ(k cos(kt) - 3k sin(kt))
uₓₓ = e¯³ᵗ(-k² sin(kt))
Now, we can compute uₓₓ and uₜ and substitute these expressions back into the partial differential equation:
uₜ = 4uₓₓ
e¯³ᵗ(k cos(kt) - 3k sin(kt)) = -4k²e¯³ᵗ sin(kt)
Dividing both sides by e¯³ᵗ and sin(kt), we get:
k cos(kt) - 3k sin(kt) = -4k²
Dividing both sides by k and simplifying, we get:
tan(kt) - 1 = -4k
Letting z = kt, we can write this equation as:
tan(z) = 4z + 1
We can graph y = tan(z) and y = 4z + 1 and find their intersection points to find the values of z (and therefore k) that satisfy the equation. The first intersection point is approximately z = 0.1449, which corresponds to k ≈ 0.1449/t. The second intersection point is approximately z = 1.096, which corresponds to k ≈ 1.096/t. Therefore, the two values of k that satisfy the given equation are approximately 0.1449/t and 1.096/t.
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I will give brainlyist to who ever answers it.
A family with travel 475 miles on the Road trip which inequality can be used to find all possible values of T the time it would take to reach their destination if they travel in an average speed of at least in miles per hour
The inequality that can be used to find all possible values of T, the time it would take to reach their destination if they travel at an average speed of at least "r" miles per hour, can be expressed as:
T ≤ 475 / r
This inequality states that the time taken (T) should be less than or equal to the distance traveled (475 miles) divided by the average speed (r miles per hour). By dividing the total distance by the average speed, we obtain the maximum time it would take to reach the destination. Any time less than or equal to this value would satisfy the condition of traveling at an average speed of at least "r" miles per hour.
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Penny decided to travel to Palawan. The airplane flew at an average rate of 300 miles per hour and covered 1500 miles. How long will the flight will take? *
A. 3 hours
B. 4 hours
C. 5 hours
D. 6 hours
The time it will take the flight is C) 5 hours.
To solve this problem, we can use the formula: distance = rate x time. In this case, we know that the distance is 1500 miles and the rate (or speed) is 300 miles per hour. We can rearrange the formula to solve for time: time = distance / rate. Plugging in the values we have, we get:
time = 1500 miles / 300 miles per hour
time = 5 hours
Therefore, the correct answer is C. It will take Penny 5 hours to fly from her starting point to Palawan at an average speed of 300 miles per hour. This calculation assumes that the plane maintains a constant speed throughout the entire flight, which may not be the case due to factors such as wind and turbulence.
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An arithmetic sequence K starts 4,13. Explain how would you calculate the value of the 5,000th term
The value of the [tex]5000^{th}[/tex] term in the given arithmetic sequence K is 44995.
The sequence that is given in the question is said to be an arithmetic sequence which means the consecutive elements in the series will have common differences.
To find any term in the series first, we need to find the first term and the common difference that the series follows.
Here we know that the first and the second term of the series are 4 and 13 so from this we can find the common difference which is:
13-4=9
so the first term (a) = 4
the common difference (d) = 9
To find the [tex]n^{th}[/tex] term of the series we can use the formula:
[tex]a_n=a_1+(n-1)*d[/tex]
where [tex]a_n[/tex] is the nth term in the sequence, [tex]a_1[/tex] is the first term of the series, n is the no.of term, and d is the common difference.
So to find the 5000th term in the series
[tex]a_{5000}=4+(5000-1)*9\\a_{5000}=4+(4999*9)\\a_{5000}=4+ 44991\\a_{5000}= 44995\\[/tex]
The value of the [tex]5000^{th}[/tex] term is 44995
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Can someone help me asap? It’s due today!! Show work! I will give brainliest if it’s correct and has work
Make a probability table!
The probability of choosing randomly with replacement an H or P in either selection is derived to be equal to 0.16 which makes the last option correct.
What is probabilityThe probability of an event occurring is the fraction of the number of required outcome divided by the total number of possible outcomes.
The total possible outcome = 5
the event of selecting H = 1
probability of selecting H= 1/5
the event of selecting P = 2
probability of selecting H= 2/5
probability of choosing an H or P in either selection = 1/5 × 2/5 + 2/5 × 1/5
probability of choosing an H or P in either selection = 4/25
probability of choosing an H or P in either selection = 0.16
Therefore, the probability of choosing randomly with replacement an H or P in either selection is derived to be equal to 0.16
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Question 1 (Essay Worth 10 points)
(01. 01 MC)
Part A: A circle is the set of all points that are the same distance from one given point. Find an example that contradicts this definition. How would you change the definition to make it more accurate? (5 points)
Part B: Give an example of an undefined term and how it relates to a circle. (5 points)
Part A:
The definition provided for a circle is actually correct. However, if we change the definition slightly to say that a circle is the set of all points in a plane that are the same distance from a given point, we can find an example that contradicts it.
For instance, consider a cone in three-dimensional space. If we take a cross-section of the cone that is parallel to the base, we get a circle. However, this circle is not the set of all points that are the same distance from one given point, but rather from the axis of the cone.
To make the definition more accurate, we need to specify that the circle exists in a plane.
Part B:
An example of an undefined term related to a circle is the term "point." A circle is defined as the set of all points that are the same distance from a given point, but the term "point" is not defined within this definition.
A point is typically defined as a location in space that has no size or shape. In the context of a circle, a point can be thought of as any location on the circumference of the circle. However, it is important to note that the definition of a point is not dependent on the definition of a circle, and vice versa.
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Make 20 questions subtraction and addition of fractions only like this
e. G saina ,anika and mercy got some money saina got 1/6 and mercy got 3/4 and anka got the rest
a. Caculate the fraction of saina and mercy
b. What is anika s share in fractions
c. How much was the money
you can use money,fruits or any thing
due 24/04/22
20 questions subtraction and addition of fractions only like this:
A recipe calls for 2/3 cup of flour and 1/4 cup of sugar. What is the total amount of flour and sugar needed in fraction?
John had 3/4 of a pizza and gave 1/3 of it to his friend. What fraction of the pizza does John have left?If 2/5 of a cake is chocolate and 1/5 is vanilla, what fraction of the cake is another flavor?If Tom can run 5/6 of a mile in 4 minutes, how many minutes will it take him to run 1 mile?If 3/8 of a bag of apples is rotten, what fraction of the bag is not rotten?A store had 5/6 of its shelves stocked with books. If 1/4 of the books were science books, what fraction of the shelves were stocked with science books?If Maria has 3/8 of a tank of gas and she uses 1/4 of it to drive to work, what fraction of the tank is left when she arrives at work?A recipe calls for 1/3 cup of sugar and 1/4 cup of butter. What is the total amount of sugar and butter needed in fraction?If 2/3 of a box of crayons is blue and 1/4 of the box is red, what fraction of the box is another color?If a recipe calls for 3/4 cup of milk and you have only 1/2 cup, what fraction of milk do you need to buy to have enough?If a school has 7/8 of its students enrolled in math and 3/4 of those enrolled in math are also enrolled in science, what fraction of the school is enrolled in both math and science?A store had 1/2 of its apples on sale for 1/4 off. What fraction of the original price did a customer pay for a discounted apple?If a train travels 1/2 of a mile in 2 minutes, how long will it take to travel 1 mile?A recipe calls for 2/3 cup of flour and 1/4 cup of sugar. What is the total amount of flour and sugar needed in fraction?If a recipe calls for 3/4 cup of oil and you have only 1/3 cup, what fraction of oil do you need to buy to have enough?If 3/8 of a class is girls and 2/5 of the girls have brown hair, what fraction of the class is girls with brown hair?If a recipe calls for 1/2 cup of brown sugar and 1/4 cup of white sugar, what is the total amount of sugar needed in fraction?If a store sells 3/4 of a bag of apples and has 2/3 of a bag left, what fraction of the original bag is left?If a car travels 3/4 of a mile in 2 minutes, how long will it take to travel 1 mile?If a recipe calls for 1/3 cup of butter and you have only 1/6 cup, what fraction of butter do you need to buy to have enough?If a recipe calls for 1/4 cup of honey and 1/3 cup of sugar, what is the total amount of honey and sugar needed in fraction?To know more about fractions, refer to the link below:
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All-star trinkets estimates its monthly profits using a quadratic function. the table shows the total profit as a function of the number of trinkets produced. which function can be used to model the monthly profit for x trinkets produced? f(x) = –4(x – 50)(x – 250) f(x) = (x – 50)(x – 250) f(x) = 28(x 50)(x 250) f(x) = (x 50)(x 250)
The function used to model the monthly profit for x trinkets produced are f(x) = -4(x - 50)(x - 250). The maximum profit occurs when 150 trinkets are produced.
The quadratic function that can be used to model the monthly profit for x trinkets produced is:
f(x) = -4(x - 50)(x - 250)
This is because the function is in the form of a quadratic equation, which is y = ax² + bx + c. In this case, a = -4, b = 1200, and c = 0. When we expand and simplify the equation, we get:
f(x) = -4x² + 1200x
This equation represents a parabola with a maximum value at x = 150. Therefore, the maximum profit occurs when 150 trinkets are produced.
The other answer choices are not correct because they are not quadratic functions. For example, f(x) = (x - 50)(x - 250) is a product of linear factors, and f(x) = 28(x - 50)(x + 250) and f(x) = (x + 50)(x + 250) have a coefficient of x² that is not equal to -4.
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a) Find the general solution of the differential equation dy 2.cy dar 22 +1 3 b) Find the particular solution that satisfies y(0) 2
The particular solution is [tex]y(t) = (1/2c) (t^2/2 + t/2 + 1/2c) + (2 - 1/(4c))e^(-2ct)[/tex].
[tex]dy/dt + 2cy = t^2 + 1[/tex]
To find the general solution of this differential equation, we can start by finding the integrating factor, which is given by:
I(t) = e^(∫2c dt) = [tex]e^(2ct)[/tex]
Next, we can multiply both sides of the differential equation by the integrating factor I(t):
[tex]e^(2ct) dy/dt + 2ce^(2ct) y = (t^2 + 1) e^(2ct)[/tex]
We can now recognize the left-hand side as the product rule of the derivative of the product of y and I(t):
[tex](d/dt)(y e^(2ct)) = (t^2 + 1) e^(2ct)[/tex]
Integrating both sides with respect to t gives:
[tex]y e^(2ct) = ∫(t^2 + 1) e^(2ct) dt + C[/tex]
The integral on the right-hand side can be solved using integration by parts, and we get:
∫([tex]t^2[/tex] + 1) [tex]e^(2ct) dt = (1/2c) e^(2ct) (t^2/2 + t/2 + 1/2c) + K[/tex]
where K is an arbitrary constant of integration.
Substituting this expression back into the previous equation, we get:
[tex]y e^(2ct) = (1/2c) e^(2ct) (t^2/2 + t/2 + 1/2c) + K[/tex]
Dividing both sides by e^(2ct), we obtain the general solution:
[tex]y(t) = (1/2c) (t^2/2 + t/2 + 1/2c) + Ke^(-2ct)[/tex]
where K is an arbitrary constant.
To find the particular solution that satisfies y(0) = 2, we can substitute t = 0 and y(0) = 2 into the general solution and solve for K:
[tex]y(0) = (1/2c) (0^2/2 + 0/2 + 1/2c) + Ke^(0)[/tex]
2 = 1/(4c) + K
Solving for K, we get:
K = 2 - 1/(4c)
Substituting this value of K back into the general solution, we get the particular solution:
[tex]y(t) = (1/2c) (t^2/2 + t/2 + 1/2c) + (2 - 1/(4c))e^(-2ct)[/tex]
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If f(x) = x2 − 6x − 4 and g(x) = 5x + 3, what is (f + g)(−3)? (1 point)
41
35
11
−35
The value of (f + g)(−3) given the functions f(x) = x² − 6x − 4 and g(x) = 5x + 3 is 11.
To find (f + g)(-3), we first need to add the functions f(x) and g(x) together, and then evaluate the resulting function at x = -3.
f(x) = x² - 6x - 4
g(x) = 5x + 3
Now, let's add f(x) and g(x):
(f + g)(x) = (x² - 6x - 4) + (5x + 3) = x² - x - 1
Now that we have the combined function, we can evaluate it at x = -3:
(f + g)(-3) = (-3)² - (-3) - 1 = 9 + 3 - 1 = 11
So, (f + g)(-3) = 11.
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Graph: 3y = 6
-
-6 -4 -2
6
4
2
-2
त्र
-6
y
2 4
st
Click or tap the graph to plot a point.
6
X
४
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Meg has 3/10 liter of juice left in her bottle, Ines has 3 times as much juice in her bottle as Meg has How much juice, in liters, does Ines have?
Ines has 9/10 liter of juice, if Meg has 3/10 liter of juice left in her bottle and Ines has 3 times as much juice in her bottle as Meg has .
It is need to find how much juice does Ines have.To calculate it, it is need to know how much liter of juice does Meg have. Meg have 3/10 liter of juice left in her bottle, and Ines has 3 times as much juice her bottle as Meg has.
That is Ines has 3 times means multiplying how much juice meg have by 3.
That is Juice left in bottle of Ines = juice left in bottle of Meg * 3 = 3/10 liter x 3 = 9/10 liter. Therefore, Ines has 9/10 liter of juice in her bottle.
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1) harriett has a cylindrical pool with a diameter of 11 feet and a height of 2 feet.
the inside of the pool is lined with a plastic material. how many square feet of plastic material does the pool have? use 3.14 for pi. round your answer to the nearest tenth.
please help me because i really need with this question <3
The pool has approximately 258.2 square feet of plastic material. Rounded to the nearest tenth, the answer is 258.2 square feet.+
To calculate the surface area of the pool that is lined with plastic material, we need to find the area of the curved part and the area of the top and bottom circles.
First, let's find the radius of the pool, which is half of the diameter:
radius = 11 feet / 2 = 5.5 feet
The curved part of the pool is a cylinder with a height of 2 feet and a circumference of [tex]2 * π *radius:[/tex]
curved area = height * circumference
[tex]curved area = 2 feet * 2 * 3.14 * 5.5 feet[/tex]
[tex]curved area = 68.2 square feet[/tex]
The top and bottom of the pool are two circles with a radius of 5.5 feet:
circle area = π * radius²
[tex]circle area = 3.14 * 5.5 square feet[/tex]
[tex]circle area = 95.0 square feet[/tex]
To find the total surface area of the pool that is lined with plastic material, we add the area of the curved part and the area of the top and bottom circles:
Total area = curved area + 2 * circle area
Total area = 68.2 square feet + 2 * 95.0 square feet
Total area = 258.2 square feet
The pool has approximately 258.2 square feet of plastic material. Rounded to the nearest tenth, the answer is 258.2 square feet.
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Chord eg measures 8 inches and the distance from the center of j to the chord is 3 inches
The length of chord segment EG = 6 inches and the length of FG = √23 inches.
Given, chord EG = 8 inches and the distance from the center of J to the chord is 3 inches.
We can draw a diagram as follows:
J
/ \
/ \
/ \
/ \
E-----------G
|
|
|
|
|
F
Here, OJ is perpendicular to chord EG at point F.
As per the theorem, the length of the perpendicular from the center of the circle to a chord is half the length of the diameter intersecting the chord.
So, we can find the length of the diameter intersecting chord EG and then use it to find the radius of the circle.
Length of chord EG = 8 inches
Length of OJ = 3 inches
Using Pythagorean theorem in right triangle OFG, we get:
OG² = OF² + FG²
Let x be the length of FG
We know that OF = OJ = 3 inches
OG = radius of the circle
So, we have:
radius of circle = OG = √(OF² + FG²) = √(3² + x²)
The diameter of the circle = 2(radius) = 2√(3² + x²)
Now, using the theorem mentioned above, we can say:
Length of perpendicular from the center of the circle to chord EG = OF = 3 inches
Length of diameter intersecting chord EG = 2√(3² + x²)
So, we get:
Length of chord segment EG = 2 * length of perpendicular
= 2 * 3 inches
= 6 inches
Now, we know that the chord segment EG divides the diameter intersecting it into two equal parts.
So, we have:
Length of one part of the diameter = (2√(3² + x²))/2 = √(3² + x²)
Using Pythagorean theorem in right triangle OJF, we get:
OJ² + JF² = OF²
3² + JF² = 8²
JF² = 8² - 3² = 55
JF = √55
Using Pythagorean theorem in right triangle JFG, we get:
JG² + FG² = JF²
(√(3² + x²))² + x² = 55
9 + x² + x² = 55
2x² = 46
x² = 23
x = √23
Therefore, the length of chord segment EG = 6 inches and the length of FG = √23 inches.
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Kevin needs 2/3 of a yard to make a pillow. He has 3 1/3 yards of fabric. How many pillows can he make? A). 2 2/9 B. ) 3 2/3 C. ) 5 D. ) 6
The number of pillows requiring [tex]\frac{2}{3}[/tex] yards that can be made from [tex]3\frac{1}{3}[/tex] yards is 5. Thus the right answer to the given question is C.
Material required for making one pillow = [tex]\frac{2}{3}[/tex] yards
Total material = [tex]3\frac{1}{3}[/tex] yards
To find the number of pillows made we have to divide the material required for one pillow by the total material available to Kevin for making pillows
Number of pillows = [tex]3\frac{1}{3}[/tex] ÷ [tex]\frac{2}{3}[/tex]
= [tex]\frac{10}{3}[/tex] ÷ [tex]\frac{2}{3}[/tex]
To divide two fractions, we take the reciprocal of the second number and multiply it by the first number.
= [tex]\frac{10}{3}[/tex] * [tex]\frac{3}{2}[/tex]
= 5
Thus, the number of pillows made is 5.
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Peter had to solve a puzzle.which mathematical symbol can be placed between 5 and 9, to get a numbergreater than 5, but less than 9?
To get a number greater than 5,but less than 0, Peter can use the mathematical symbol of a decimal point (.) to solve this puzzle.
If Peter places decimal point between 5 and 9, he can get a number like 5.1, 5.2, 5.3... up to 8.9, which meets the conditions of being greater than 5 but less than 9.
A decimal point (.) is a mathematical symbol. When this decimal point is placed in between two numbers, suppose x and y, then x.y means x.y is greater than x and less than y.
So to solve the puzzle, Peter can use decimal point.
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Suppose the area of a trapezoid is 126 yd?. if the bases of the trapezoid are 17 yd and 11 yd long, what is the height?
a 4.5 yd
b. 9 yd
c. 2.25 yd
d. 18 yd
The height of the trapezoid is 9 yards. Therefore, the correct answer is option b. 9 yd.
To find the height of the trapezoid with the given area and base lengths, we will use the formula for the area of a trapezoid:
Area = (1/2) * (base1 + base2) * height
Here, the area is given as 126 square yards, base1 is 17 yards, and base2 is 11 yards. We need to find the height.
1. Substitute the given values into the formula:
126 = (1/2) * (17 + 11) * height
2. Simplify the equation:
126 = (1/2) * 28 * height
3. To isolate the height, divide both sides by (1/2) * 28:
height = 126 / ((1/2) * 28)
4. Calculate the result:
height = 126 / 14
height = 9
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