Simplify 5 to the negative 4th power over 5 to the 3rd. group of answer choices 57 5−1 1 over 5 1 over 5 to the 7th power

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?