what is the perimeter of a trapezoid with a height of 3 units and a base of 9units?

The jurassic zoo charges $14 for each adult admission and $5 for each child. the total bill for 77 people from a school trip was $565. how many adults and how many children went to the zoo? i

Evaluate the expression for the given value of the variable 7a - 4a for a =8

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.