Simplify 25^ - 1/2 explain! i know the answer is 1/5 but why?

When the exponent is negative, you have to make the number a fraction(1 over the number).

For example:

This gets rid of the negative, but it leaves the exponent

When an exponent is a fraction, it is the square root.

For example:

So...

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²

if she was to only spend a dollar she can get 1lb

step-by-step explanation: