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

-4

step-by-step explanation:

do 6-10=

if u need it to be negative.

hi there!

step-by-step explanation:

a roof pitch is basically for every inch rise there is 12 inches run.

the height of the roof is also known as the rafter.

formula: rafter^2 = rise^2 + run^2

rafter^2 = 5^2 + 12^2

rafter^2 = 25 + 144

rafter ^2 = 169"^2

the height of the roof from the lowest point to the highest point is 169"^2.

hope this : )

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1