Alex makes and sells cookies to raise money to buy an IPhone. He purchases cookie ingredients for $25, and sells cookies for $2 each.

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap

Benito is selecting samples of five values from the table, which row will result in the greatest mean? population data row 1 4 2 2 3 3 row 2 3 3 4 3 2 row 3 2 4 3 4 3 row 4 3 4 4 7 3 row 1 row 2 r

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25