The mean absolute deviation (mad) for the first set of data is 1.2 and the mad for the second set of data is 0.4. approximately how many times the variability in the heights of the seventh graders is the variability in the heights of the sixth graders? (round all values to the tenths place.)
3.2
3.0
1.5
0.8

jjhjhhjjh

step-by-step explanation:

answer: h

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.