Half the students at the park are on swings. one eighth of the children are on seesaws. one fourth of the children are on slides. the other 6 children are playing ball. write an equation that shows how many children are on the park.

Really need on these. i have no idea what to do

If a =6, what is the value of 2a(3b + 5c)?

Which of the following statements is not true? a.parallel lines are lines in the same plane that never intersect. b.congruent figures have the same shape and same size angles and sides. c.similar figures must have the same shape and the same size. d.a rotation is when you turn a figure around a certain point.