Question

Please solve this math.

You jist have to find 'x'​

Answer 1

Step-by-step explanation:

4^x=9+8-1=16

4^x=4^2

so,x=2

hope this helps you better

Answer 2

Answer:

Given : -

•Final velocity of train is = 0

•Acceleration of train is = -2m/s^2.

•Time taken by applying brakes in train = 20 seconds.

To Find : -

•Initial velocity of train = ?

Solution : -

Given,

v = 0

a = -2m/s^2

t = 20sec

we have,

\: \sf \large \implies \: v = u + at⟹v=u+at

Now put the values here

\begin{gathered} \: \sf \implies 0 = u - 2 \frac{m}{ {s}^{2} } \times 20s \\ \\ \: \sf \implies \: u = 40 \frac{m}{s} \end{gathered}

⟹0=u−2

s

2

m

×20s

⟹u=40

s

m

Thus,the initial velocity of the train is 40m/s.

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