Which of the following reasons is valid for proving a parallelogram is a rectangle? (1) Diagonals bisect angles
(2) All sides are congruent
(3) Diagonals are congruent
(4) Diagonals are perpendicular

cosine

step-by-step explanation:

the answer is:

the answer is:

to solve the problem, we need to remember the quotient of power property, it's defined by the following relation:

if we have a quotienf of powers that have the same base, we need to keep the same base and subtract the exponent of the denominator power to the exponent of the numerator power.

so, we are given the expression:

then, calculating we have:

hence, the answer is:

have a nice day!

sorry

step-by-step explanation:

sorry, but im pretty sure its a now that i look at it