Solve this PLZ!
4 - 7 (v - 9) = -7 -6(v - 10)

Which of the following are parts of a sphere

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.

Determine if the equation defines y as a function of x: 2xy = 1. yes o no