Julio cubes a number and then takes the cube root of the result. He ends up with 20. What number did Julio start with?

He started with 20.

Step-by-step explanation:

This is because if you cube a number but then you cube root that same number after that it's like taking away the change that changed the number in the first place if that makes any sense.

answer: a and b

step-by-step explanation:

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.