11. Miles per Gallon The following data represent the miles per gallon for a 2013 Ford Fusion for six randomly selected vehicles.
Compute the range, sample variance, and sample standard
deviation miles per gallon
34.0, 33.2, 37.0, 29.4, 23.6, 25.9

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.

step-by-step explanation:

duck you

70 years.

step-by-step explanation:

- (2, -7)

- lines r and s and lines t and u must be parallel