Find the value of the expressions when; a2+b +7 when a=5 and b=11.

There are 20 children in the cast of a class play and 8 of the children are boys of the boys 4 have a speaking part in the play and of the girls 8 do not have a speaking part in the play if a child from the cast of the place chosen at random what is the probability that the child has a speaking part

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?