81 ÷ ÷ 4) =9 evaluate the numeric expression

The factorization of 8x3 -125 is (2x-5)(jx2 +kx+25)

Ineed with angles and the measure of them i have abc a is 65 and b is (3x-10) and c is (2x) find the value of x

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?