The diameter of a semicircle is 2 feet. What is the semicircle's perimeter?

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

Solve the equation. 2x - 8(x+1)= 6(2x - 3)