Me with this answer in denise's class there are 7 more boys than girls. there are 13 students in all. how many boys are there in denise's class?

Determine the volume of a cylinder bucket if the diameter is 8.5 in. and the height is 11.5 in.

Aperpendicular bisector, cd is drawn through point con ab if the coordinates of point a are (-3, 2) and the coordinates of point b are (7,6), the x-intercept of cd is point lies on cd.

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.