The temperature falls from 0 degrees to - 123 degrees in 3 hours. Which expression finds the change in temperature per hour? ?
7 49
024
-
7 49
0 -24
49 7
0 -1
0
49 7
4 -

D

Step-by-step explanation:

Change=Temperature/Time

Change=(-49/4)/(7/2)

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.