One day the temperature was 72°F. That night, the temperature was 44°F. What number represents the change in temperature? A. 22°F
B. 32°F
C. -38°F
D. -28°F

i need a picture

step-by-step explanation:

y=x+9

?

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

the photograph is photographer and- in the process- ourselves.

step-by-step explanation: