For what values of x is x2-36=5x true?
0
-9 and 4
-4 and 9
4 and -9
9 and 4

-4  and 9

Step-by-step explanation:

x2-36=5x'

x*x - 5x - 36 = 0

(x - 9) (x + 4) = 0

roots   9  and -4

a) what number, when added to negative four, is equal to negative five?

step-by-step explanation:

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.