All categories

3 years ago

S = -t³ + 2t² - 2t, 0 ≤ t ≤ 2 Find the body's speed and acceleration at the end of the time interval. *

Mathematics

1 answer:

RSB [31]3 years ago

5 0

Answer:

Step-by-step explanation:

the end of interval is t=2

v=s'= -3t^2+4t-2

v(2)= -3(2^2)+4(2) -2

v(2)=-12+8-2

v(2)= -6m/s

so tje ans is A

You might be interested in

Exponential Functions

nikitadnepr [17]

Answer:

A. a = -3, b = 2

Step-by-step explanation:

I calculated it logically

5 0

3 years ago

If X=7 then what does Y=? PLEASE HELP FAST!!

Darya [45]

What’s the problem cause without the problem I can’t helo

3 0

3 years ago

A student's grade for the four quarters are 95, 83, 91, and 85. What does the student need to earn on the final exam to have an

gulaghasi [49]

Answer:

The least score the student can get is 71 to get an overall B average at the end of the year.

Step-by-step explanation:

Let the score she needs to get be = x

We now have to take the mean of all the five subjects (including x) and equate it to the least score she can have to get a B grade.

Let us take the least score the student needs to get a B grade to be 85

Mean of all 5 scores =

$\frac{95+83+91+85+x}{5}=85$

$\frac{354+x}{5} =85$

$354+x = 425$

$x = 71$

The least score the student can get is 71 to get an overall B average at the end of the year.

3 0

3 years ago

-1+5/4x=-16 What number is x representing?

ValentinkaMS [17]

Answer:

x = -12,

Step-by-step explanation:

-1 + 5/4x = -16

5/4 x = -16 + 1

5/4 x = -15

x = -15 * 4/5

x = -12.

5 0

4 years ago

A city planner is mapping out some new features for a triangle park. She sketches the park on a grid paper. The coordinates of t

Alecsey [184]

Answer:

Perhaps, she is interested in finding the area enclosed by this triangular park.

Step-by-step explanation:

The area of the triangle enclosed by the three points

A(1,1), B(1,4) and C(-3,4) in this question will be given by

|Ax ( By − Cy)+ Bx(Cy−Ay)+ Cx(Ay− By) |/2

=|1(4-4)+1(4-1)+-3(1-4)|/2=10/5= 5 sq. units.

5 0

3 years ago