The water level of a lake fell by 13 inches during
a 15-week-long dry spell. simplify the complex
fraction below to find the average rate at which
the water level changed every week.
-1 1/2 over 1 2/3 inches/week

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.

is there a graph

step-by-step explanation:

its c

the best estimate is 3 because   8 can only go into 24 3 times