1) Um certo quadrado tem seus lados medindo 2x. Ao se decompor o quadrado e formar um trapézio com 4 peças, esse terá uma área de: a) 2x²
b) 4x²
c) 6x²
a) 8x²

Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price

Simplify (4x^2 - 8xy + 2y^2) - (9x^2 - 4xy - 7y^2) a. -5x^2 + 4xy + 9y^2 b. -5x^2 - 4xy + 9y^2 c. -5x^2 + 12xy + 4y^2 d. -5x^2 - 4xy - 5y^2

Which equation represents h for right triangle abc