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Alisiya [41]
3 years ago
11

The difference between 7 and -14. Numerical expression

Mathematics
2 answers:
BlackZzzverrR [31]3 years ago
6 0

Answer:

7-(-14)

7+14=21

Step-by-step explanation:

- and -  = +

lina2011 [118]3 years ago
3 0

Answer:

7 - (-14)

7 + 14

21

\huge\underline\red{Hope\:that\:helps}

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Two complementary angles are in the ratio of 1:5. find the measure of the larger angle?
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First you set up an equation using a variable:
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3 years ago
A body moves s metres in a time t seconds so that s = t3 – 3t2 + 8. Find:
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Using derivatives, it is found that:

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

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iv) 6 m/s².

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<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:

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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

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Answer:

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