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Arte-miy333 [17]
3 years ago
14

I need help with all of them. Please help.

Mathematics
1 answer:
klemol [59]3 years ago
7 0
You need to give us a picture in order for us to help you
You might be interested in
A body moves s metres in a time t seconds so that s = t3 – 3t2 + 8. Find:
Lady bird [3.3K]

Using derivatives, it is found that:

i) v(t) = 3t^2 - 6t

ii) 9 m/s.

iii) a(t) = 6t - 6

iv) 6 m/s².

v) 1 second.

<h3>What is the role of derivatives in the relation between acceleration, velocity and position?</h3>
  • The velocity is the derivative of the position.
  • The acceleration is the derivative of the velocity.

In this problem, the position is:

s(t) = t^3 - 3t^2 + 8

item i:

Velocity is the <u>derivative of the position</u>, hence:

v(t) = 3t^2 - 6t

Item ii:

v(3) = 3(3)^2 - 6(3) = 27 - 18 = 9

The speed is of 9 m/s.

Item iii:

Derivative of the velocity, hence:

a(t) = 6t - 6

Item iv:

a(2) = 6(2) - 6 = 6

The acceleration is of 6 m/s².

Item v:

t for which a(t) = 0, hence:

6t - 6 = 0

6t = 6

t = \frac{6}{6}

t = 1

Hence 1 second.

You can learn more about derivatives at brainly.com/question/14800626

7 0
2 years ago
Subtract -1 3/5 - ( -2 7/8) Enter your answer as a simplified fraction by filling in the boxes
vredina [299]
The answer is 51/40=1 and 11/40
8 0
3 years ago
Solve -9 2/7 - (-10 3/7).<br> A. - 1 1/7<br><br> B. 1 1/7<br><br> C. 19 1/7<br><br> D. 19 5/7
jenyasd209 [6]

Answer:

1 5/7

Step-by-step explanation:

-9 2/7 -(-10 3/7) recall -×- = +

-9 2/7 +10 3/7

1 2+3/7

1 5/7

6 0
3 years ago
Someone help please!
Bumek [7]

Answer:

9/10 I do this a lot

step-by-step explanation:

1/2 changes to 5/10 and 2/5 becomes 4/10 then you add and there is your answer

4 0
3 years ago
Read 2 more answers
The radius is 6 and the height is 15 what is the volume in terms of pi the shape is a cone
Alenkinab [10]

Answer:

565.49 or if rounded to the nearest tenth, 565.5

Explanation:

The formula for finding the volume of a cone is V=1/3Bh

B = pi times the radius squared

h = height

Substitute 6 for r and 15 for h.

V= 1/3·\pi·(6^{2})·15

Multiply.

V= 565.49 or 565.5 rounded to the nearest tenth.

4 0
3 years ago
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