Ian spends a winter day recording the temperature once every three hours for science class. At 9am, the temperature was -13.2°F. Between 9am and noon, the temperature increased by 8.4°F. Between noon and 3pm, the temperature dropped 11.6°F. Between 3pm and 6pm , the temperature dropped 12.8°F. What was the temperature at 6pm?

poop

Step-by-step explanation:

,ysyjs

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.

i’m sorry but i don’t know sorry