The equation a = StartFraction one-half EndFraction left-parenthesis b 1 plus b 1 right-parenthesis.(b1 + b2)h can be used to determine the area, a, of a trapezoid with height, h, and base lengths, b1 and b2. Which are equivalent equations? Check all that apply.a. [tex]\frac{2a}{h} - b_2 = b_1[/tex]
b. [tex]\frac{a}{2h} - b_2 = b_1[/tex]
c. [tex]\frac{2a - b_2}{h} = b_1[/tex]
d. [tex]\frac{2a}{b_1 + b_2} = h[/tex]
e. [tex]\frac{a}{2(b_1 + b_1)} = h[/tex]