Which expression is equivalent to 5y^-3? 1/125^3 1/5y^3 5/y^3 125/y^3

So remember the rule from negative exponents to fractions is: . Note that it is only the y exponent with the negative exponent, not 5, so our fraction would look like this: .

In short, the correct answer is the third option: 5/y^3.

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.