5. Brandon and Chloe ride their bikes for 4 hours along a flat, straight road. Brandon’s velocity, in miles per
hour, at time t hours is given by a differentiable function B for 0 st 54. Values of B(t) for selected times t
are given in the table above. Chloe's velocity, in miles per hour, at time t hours is given by the piecewise
function C defined by
C(t)
tep
for 0 12 – 3t – 12 for 2 <154.
(a) How many miles did Chloe travel from time t = 0 to time t = 2 ?
Do not write beyond this border.
Do not write beyond this border.

5. Brandon And Chloe Ride Their Bikes For 4 Hours Along A Flat, Straight Road. Brandons Velocity, In

Answers

Answer 1

Answer:

Step-by-step explanation:

a) ∫from 0 to 2 of te^(4-t^2) dt. Let u = 4-t^2. du= -2dt. And, tdt= -dy/2.

If x=0, u= 4 and if x=2, u=0.

Therefore our new integral will be, -(1/2) ∫ from 0 to 4 of e^u du.

= -(1/2)(e^u) | 0 to 4

= -(1/2)(e^0 - e^4)

= -(1/2) + (1/2)e^4

= (1/2)(e^4 -1)  miles

Therefore, from t=0 to t=2, Chloe has travelled a distance of (1/2)(e^4-1) miles.

b) At t=3, C(t)=12-3t-t^2

C(t) is already a function of velocity so simply plug in C(3), which is -6 miles/hour.

We also need to know acceleration.

C'(t)= -3 - 2t

C(3)= - 9 miles/hour squared.

Therefore, since velocity and acceleration are both negative, Chloes speed is increasing at t =3 hours.


Related Questions

Which term describes BCD

Answers

Check the picture below.

write a event that has a probability of 0

Answers

When flipping a coin, the coin will land neither on heads or tails.
If you need like a more-unique answer just let me know!

Find the area of the pyramid net

Answers

The area of the pyramid net is 12 units

Step 1

Find the area of the Square in the middle

Formula for finding square:

[tex]A = L*W[/tex]

Let's apply the formula and find our answer:

[tex]A = 2*2\\=4[/tex]

The area of the square is 4 units

Step 2

Find the area of all 4 triangles around the square

As you know, the formula for finding 1 triangle is as follows:

[tex]A = \frac{1}{2} *B*H[/tex]

But, to find the area of 2 triangles, we can use this formula:

[tex]A=B*H[/tex]

And to find 4 of them (with same dimensions;as required here), we can use this one:

[tex]A=2*B*H[/tex]

Let's apply the formula then! What are we waiting for!!!!

[tex]A=2*2*2\\=2*4\\=8[/tex]

The area of ALL of the triangles around the square is 8 units

Step 3

Add all areas to find FINAL ANSWER!

Easy!

4+8=12

The area of the Pyramid Net is 12 units

Answer:

12 is the answer because 2 x 2 = 4 but since it is a triangular face we half it and end up with 2, 2 x 4 is 8, the square it 2 x 2 = 4 so we add 4 and 8 which equals 12  

HELP NEED ANSWER VERY SOON Which of the following box plots has the HIGHEST overall speed The box plots compare the speeds of cars traveling on a highway​

Answers

Answer

North of the box plot speed over 72 is the answer because it is a very high speed of the chart and it shows that the its going over the average speed

HELP ME PLEASE I NEED HELP

Answers

Step-by-step explanation:

here you go best of luck on this

after spending 80% of her daily allowance, Ola found out she had 25k left. How much was her total allowance?

Answers

Answer:

31.25 k

Step-by-step explanation:

80 %   *  x = 25 k

.80  x    = 25 k

x   = 25 k / .80 = 31.25 k

Answer:

  125k

Step-by-step explanation:

You want to know Ola's daily allowance if 25k remained after 80% was spent.

Setup

The fraction remaining was 100% -80% = 20%. If that fraction of Ola's allowance (a) is 25k, we have ...

  0.20a = 25k

Solution

Dividing by 0.20, the value of 'a' is shown to be ...

  a = 25k/0.20 = 125k

Ola's total daily allowance was 125k.

A goal is to get at least 15% of daily calories from polyunsaturated fats found in various nuts, oils, and fish. 1 serving of walnuts (about 15 pieces) has about 21 grams of polyunsaturated fat. Each fat gram has 10 calories. On a 2,100-calorie diet, about what percent of daily calories does 1 serving of walnuts provide?

Answers

Using the percentage concept, it is found that 1 serving of walnuts provides 10% of daily calories.

What is a percentage?

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

[tex]P = \frac{a}{b} \times 100\%[/tex]

In this problem, one serving has 21 grams, each with 10 calories, hence the number of calories is given by:

C = 21 x 10 = 210 calories.

Hence, out of a 2,100 calorie diet, the percentage is given by:

[tex]P = \frac{210}{2100} \times 100\% = 10\%[/tex]

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Show what you know: work out the problems below and submit a photo of your work to receive full credit.

The Florida A&M Rattlers are decorating campus for homecoming weekend. Students use 3 rolls of orange streamers for every 2 rolls of green streamers for every dorm they decorate.

Draw a model that represents the ratio of different colored streamers.
Draw a model that shows the number of orange and green streamers needed to decorate 3 dorm rooms.

Answers

The model for representing the ratio of the number of orange and green rolls are [tex]\dfrac{3}{2}[/tex]

A model that shows the number of orange and green streamers needed to decorate 3 dorm rooms will be 3O=2G

What is ratio?

The ratio is defined as the representation of the one number with respect to the other number. or one number is how many times to the other number.

A model that represents the ratio of different colored streamers.

[tex]\dfrac{3}{2}=\dfrac{O}{G}{[/tex]

A model that shows the number of orange and green streamers needed to decorate 3 dorm rooms.

3O=2G

Hence the models are     [tex]\dfrac{3}{2}=\dfrac{O}{G}{[/tex]   and    3O=2G

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Was I supposed to put a greater number than 10 on top of the 4? What am I supposed to do and why?​

Answers

Answer:

So looking at the expression that was given to us, we know that we must solve for g.  In order to solve for g we need to make sure that g is alone on one side of the expression.  In this example, we need to multiply both sides by 4 to get rid of the fraction on the left and in effect we would multiply 12 by 4 also.

[tex]\frac{g}{4} > 12[/tex]

[tex]\frac{g}{4}*4 > 12*4[/tex]

[tex]g > 48[/tex]

Therefore, our final answer is [tex]g > 48[/tex]

Hope this helps!  Let me know if you have any questions

Answer:

g > 48

Step-by-step explanation:

g/4 > 12

g > 12*4

g > 48

-5 3/4 - 3 1/2 i need helppp please quickly please

Answers

Answer:

-9.25

Step-by-step explanation:

Answer: Heyaa! ~

Your Exact Answer is... - 37/4 but your Decimal form is -9.25

Step-by-step explanation:

Convert the mixed numbers to improper fractions, then find the LCD and combine.

Hopefully this helps you!

-Matthew ~

A fire ranger on a 150 ft. tall tower spots a fire at a 30-degree angle of depression. About how many feet away from the tower is the fire?

Answers

The tower is 260 feet away from the fire.

How to apply trigonometric function?

The height of the tower is the opposite side while the distance from the tower to the fire is the adjacent side.

Given:

Angle of depression = 30°.

Opposite side = 150 feet.

Now,

tan [tex]\thtea\\[/tex][tex]\theta[/tex]= P/B

tan 30 [tex]\thtea\\[/tex]= 150/B

1/√3= 150/B

B=  150*√3

B= 150*1.732

B= 259.8

B= 260 feet.

Hence, the tower is 260 feet away from the fire.

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PLEASE HELP!

Correct answers will be mark as brainliest

Wrong answers will be reported ​

Answers

Answer:

x = 45

p = 18

Step-by-step explanation:

two ships leave a harbor at
the same time. One ship travels
on a bearing S15°W at 10 miles per
hour. The other Ship travels on a
bearing N75°E at 10miles per hour.
bearing
How far apart will the ships be
after 3 hours?

Answers

Answer:

  30√3 ≈ 51.96 miles

Step-by-step explanation:

The distance between the two ships can be found using the Law of Cosines, or using your knowledge of the side relationships in special triangles.

__

Each ship is traveling at 10 mph, so after 3 hours will have traveled 30 miles.

The triangle OS1S2 formed by the harbor and the two ship locations is an isosceles triangle with base angles of 30°. Each half of OS1S2 is a 30-60-90 triangle whose longer leg is √3 times half the hypotenuse. The sum of those two "longer legs" is the distance between the ships.

The distance between ships is 2×15√3 = 30√3 ≈ 51.96 miles.

_____

Additional comment

If you prefer to use the Law of Cosines, you are looking for the length of the side opposite the 120° angle in a triangle with sides of 30 miles.

  c² = 30² +30² -2·30·30·cos(120°) = 30²(2-2·(-0.5)) = 3·30²

  c = 30√3 . . . . . take the square root (miles)

A department in a factory has three 3/4-horsepower motors, five 1/4-horsepower motors, six 3 1/3-horsepower motors, and eight 1/2-horsepower motors. What is the total connected motor load in horsepower rating?​

Answers

Answer:

Kayla , why do you find the question tricky?  :/

Step-by-step explanation:

HP total = 3*3/4 +  5*1/4  + 6*3_1/3  + 8* 1/2

HP total = 9/4 + 5/4 + 18_6/3 + 8/2

HP total = 9/4 + 5/4 + 60/3 + 16/4

HP total = 27/12 + 15/12 + 240/12 +48/12

HP total = 330/12

HP total = 165/6

HP total = 55/2

HP total = 27_1/2

Answer:

27.5 HP

Step-by-step explanation:

Sum

3(3/4) + 5(1/4) + 6(3 1/3) + 8(1/2)9/4 + 5/4 + 20 + 424 + 3.527.5 HP


What is the missing fifth term in the
pattern below?
1,8, 27, 64, ___

Answers

Answer:

the pattern is going in the form of 1³ , 2³ , 3³ , 4³

therefore next term should be 5³ which is equal to 125. So the missing term is 125

I hope you got that.

By : Modern Einstein

I need help with 5,6,7 please

Answers

Answer:

see explanation

Step-by-step explanation:

the arc length of a circle is calculated as

arc = circumference of circle × fraction of circle

(5)

circumference (C) is calculated as

C = 2πr ( r is the radius )

here diameter = 12 , then r = 12 ÷ 2 = 6

C = 2π × 6 = 12π ≈ 37.7 m ( to the nearest tenth )

(6)

JK = 2πr × [tex]\frac{75}{360}[/tex]

    = 2π × 7 × [tex]\frac{5}{24}[/tex]

    = 14π × [tex]\frac{5}{24}[/tex]

    = [tex]\frac{14\pi (5)}{24}[/tex] ≈ 9.2 in ( to the nearest tenth )

(7)

7.5 = 2πr × [tex]\frac{120}{360}[/tex]

7.5 = 2πr × [tex]\frac{1}{3}[/tex] ( multiply both sides by 3 to clear the fraction )

22.5 = 2πr ( divide both sides by 2π )

r = [tex]\frac{22.5}{2\pi }[/tex] ≈ 3.6 ft

   

When observing a performance or movement pattern, you should break down the complex skills into which of the following:
A. Stylistic parts
B. none of these
LC. Component parts
D. Tactical parts

Answers

When observing a performance or movement pattern, you should break down the complex skills into component parts.

What are complex skills?

Complex skills are skills that are composed of many parts. This makes it difficult  to engage in these sort of skills without a rigorous training.

Thus, when observing a performance or movement pattern, you should break down the complex skills into component parts.

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HElppppp pleaseee......

Answers

Answer: \sqrt[4]{xy^{2} }

Step-by-step explanation: Siplified

Use cubic regression to find a
function that fits the following
points.
(1,-1), (2,-13), (3,-45),(-1,11)
y = [?]x3+[ ]x2+0 ]x+[ ]

Answers

The cubic regression function of the points (1,-1), (2,-13), (3,-45), (-1,11) is y = -2x³ + 2x² - 4x + 3

How to determine the function?

The points are given as:

(x,y) = (1,-1), (2,-13), (3,-45), (-1,11)

A cubic regression function is represented as:

y = ax³ + bx² + cx + d

Next, we determine the cubic function using a graphing calculator.

From the graphing calculator, we have the following coefficients:

a = -2b = 2c = -4d = 3

Recall that:

y = ax³ + bx² + cx + d

So, we have:

y = -2x³ + 2x² - 4x + 3

Hence, the cubic regression function of the points is y = -2x³ + 2x² - 4x + 3

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Apple juice is 5 cans for $1.31, so each can of apple juice is $0.262. How much does it cost for each one?

Answers

Answer:

0.26 because the question states it. 0.262 can't be rounded up to 27 because 2 isn't high enough so it stays as 0.26

F(x)=2x-5 if x is 0




Please help hurry

Answers

Answer: -5

Step-by-step explanation:

2(0)-5

0-5 = -5




Triangle E has a perimeter of 125 inches. Two of
its side lengths are 26 inches and 55 inches.
What is its missing side length?

Answers

Answer:

44 inches

Step-by-step explanation:

perimeter of triangle = length of side 1 + length of side 2 + length of side 3

length of side 1 = 26

length of side 2 = 55

125 = 26 + 55 + length of side 3 = 81 + length of side 3

subtract 81 from both sides to get the length of side 3

length of side 3 = 44 inches

The price of a skateboard is reduced by 25%. The original price was $120. Find the new price.
A.
$95
B.
$80
C.
$90

Answers

New price = 90 dollars

25% of 120 = 30

Price is reduced 25% from 120 so,

120 - 30 = 90

Amount of discount = 30

A person invests 5500 dollars in a bank. The bank pays 4.25% interest compounded annually. To the nearest tenth of a year, how long must the person leave the money in the bank until it reaches 11200 dollars?

Answers

The person must leave the money in the bank for about 10.1 years at interest 4.25% to reach $11200 when compounded annually.

What is compound interest?

Compound interest is when interest is added to the principal of an investment, allowing the interest to compound over time. In other words, the beginning principal as well as the total interest from prior periods are both used to compute interest. In contrast to simple interest, which only affects the initial capital, this causes the investment to expand exponentially over time. Often utilised in banking and investment, compound interest is sometimes defined in terms of a yearly interest rate and the frequency with which it is compounded.

Given that, bank pays 4.25% interest compounded annually on the invested amount.

The compound interest is given as:

[tex]A = P(1 + r/n)^{(n*t)}[/tex]

Substituting the values of P = $5500, r = 4.25% = 0.0425, A = $11200, and n = 1.

[tex]11200 = $5500(1 + 0.0425/1)^{(1*t)}\\t = log(11200/5500)/log(1.0425) = 10.1 years[/tex]

Hence, the person must leave the money in the bank for about 10.1 years to reach $11200.

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Which of the following is NOT an example of a non-fiction text?
A. Romance novel
B. Magazines
C. Biographies and autobiographies
D. Newspapers

Answers

A. Romance Novels

The others are all examples of a non-fiction text

Solve for y: 3y + 5 - 8y = 2y - 7 - 4y
A y = - 4
B y = 12/7
C y = 4
D y = 2/3

Answers

The answer for this question is C



If p2-8 = 17, which of the following
is a possible value of P

Answers

Answer:

+ 5, - 5

Step-by-step explanation:

p^2 - 8 = 17

p^2 = 17 + 8

p^2 = 25

      = 5 x 5

p^2 = 5^2

p = ± 5

If there are 9 tacos, 18 hot dogs, and 6 hamburgers, which foods have a ratio of 2:3?

Answers

Answer:

Hamburgers and Tacos.

Step-by-step explanation:

If you divide 6 by 3 you get 2, and if you divide 9 by 3 you get 3.

2:3

A company manufactures and sells shirts. The daily profit the company makes depends on how many shirts they sell. The profit, in dollars, when the company sells xx shirts can be found using the function f(x)=6x-70.f(x)=6x−70. Find and interpret the given function values and determine an appropriate domain for the function.

f(−2)=
, meaning if the company sells
shirts, they would make a profit of
dollars. This interpretation
in the context of the problem.
f(12)=f(12)=
, meaning if the company sells
shirts, they would make a profit of
dollars. This interpretation
in the context of the problem.
f(17.5)=f(17.5)=
, meaning if the company sells
shirts, they would make a profit of
dollars. This interpretation
in the context of the problem.
Based on the observations above, it is clear that an appropriate domain for the function is
.

Answers

The amount of the profit at x = -2 can not be determined because the number of the shirt can not be negative. Then the amount of the profit at x = 12 is $ 2 and at x = 17.5 is $ 35.

What is the linear system?

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

A company manufactures and sells shirts.

The daily profit the company makes depends on how many shirts they sell.

The profit, in dollars, when the company sells x shirts can be found using the function f(x) = 6x − 70.

Find and interpret the given function values and determine an appropriate domain for the function.

Then at x = −2, then the profit will be

For this condition, the amount of the profit can not be determined because the number of the shirt can not be negative.

Then at x = 12, then the profit will be

f(12) = 6 × 12 − 70

f(12) = 72 − 70

f(12) = $ 2

Then at x = 17.5, then the profit will be

f(17.5) = 6 × 17.5 − 70

f(17.5) = 105− 70

f(17.5) = $ 35

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Jessie designed a sculpture that is shaped like a circle. The circumference of the sculpture is π meters.

Which measurement is closest to the area of the sculpture in square meters?


31.4 m²


78.5 m²


62.8 m²


314 m²

Answers

The required area of the sculpture that is shaped like a circle is [tex]78.5m^2[/tex].

Given that,

Jessie designed a sculpture that is shaped like a circle,

The circumference of the sculpture is 10π meters.

We have to determine,

Which measurement is closest to the area of the sculpture in square meters.

According to the question,

Circumference of the circle = [tex]2\pi r[/tex]

Where, circumference = [tex]10\pi[/tex]

Then,

[tex]10\pi =2\pi r[/tex]

[tex]r=\frac{10\pi }{2\pi }[/tex]

[tex]r=5m[/tex]

Therefore,

Jessie designed a sculpture that is shaped like a circle.

Area of the circle = [tex]\pi r^2[/tex]

Where, r = 5m

Then,

Area of the circle is given by,

[tex]=\pi r^2[/tex]

[tex]=3.14[/tex] × [tex](5)^2[/tex][tex]=3.14[/tex] × [tex]25[/tex]

[tex]=78.5m^2[/tex]

Hence, The required area of the sculpture that is shaped like a circle is [tex]78.5m^2[/tex].

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