(x+4)(2x−a)=0 in the equation above, a is a constant. If the equation has the solution x = 4 and x = -4, what is the value of a?

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

Find the missing variable for a parallelogram: a = latex: 28in^2 28 i n 2 h = b = 6.3 in (1in=2.54cm)

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?