If 2a=9-b and 4a=3b-12, what is the value of a?

if the area of jodi's deck is 36 square feet. what are the possible whole number dimensions of her deck?

On a trip, the fare was 50¢ for each adult and 25¢ for each child. If 30 passengers paid $12.25, how many adults and children went? Which of the following equations could not be used to solve the problem?

F (x) = - x^2+3x-4 and g (x) = 2-x, find (f*g) (x) and determine the domain

Ling sees that in this window design, there are rectangles of different sizes. how many rectangles are in the design?

Three friends each have some ribbon. Carol has 42 in of ribbon, tino has 2.5 feet of ribbon, and baxter has 1.5 yards of ribbon. Express the total length of ribbon the three friends have in inches, feet, and yards

T is the solution to the equation x + 16 = 64? x = 4 x = 32 x = 36 x = 47

If AC = 5x-16 and CF=2x-4, thanAF=

A circle has the circumference of 169 pi what is the radius of the circle?

What is 0.25 of 1000

How do you find measures using postulates and theorems?