Solve (x-3)^2=5 I need help it’s on a p e x

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

(a.s."similarity in right triangles"solve for xa.) 10b.) 20c.) 14.5d.) [tex] 6\sqrt{3} [/tex]