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3 years ago

14

Helppppppo...................

1 answer:

natulia [17]3 years ago

5 0

Step-by-step explanation:

Using the kinematics equation,

v = u + at

where v = Final speed = 15m/s

u = Initial Speed = 30m/s

t = time taken = 10 seconds

a = acceleration.

Substitute v , u and t to find a.

$15 = 30 + 10t \\ 10t = 15 - 30 \\ 10t = - 15 \\ t = - 15 \div 10 \\ = - 1.5 \frac{m}{ {s}^{2} }$

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3 years ago

What is the value of x, if twice x plus 3 cubed equals 40?

tatuchka [14]

I will give two solutions, one where everything is cubed and one where just the 3 is cubed, because I don't know what you meant.

Just the 3 is cubed solution(Which I think is correct because it has a nicer answer):

Answer:

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Step-by-step explanation:

We have that $2x+3^3=40$ .

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Everything is cubed solution:

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Step-by-step explanation:

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