What is the missing angle of a quadrilateral if the other three angles are: 40º, 100º and 120º?

100

Step-by-step explanation:

100°

Step-by-step explanation:

Angles in a quadrilateral add up to equal 360

That being said we can calculate the measure of the missing angle by subtracting the measures of the known angles from 360

So missing angle = 360 - 120 - 100 - 40

360 - 120 - 100 - 40 = 100

Hence, the measure of the missing angle is 100°

the answer is 15% decrease

  b.   the average rate of change of f(x) is less than the average rate of change of g(x).

step-by-step explanation:

since the length of the interval is the same in each case, we only need to compare the change in y-value to see which is greater.

so the change in y-value for function f is (6 )) = 9.

the table tells us

so the change in y-value for function g is (31 -1) = 30.

the change in y-value of f(x) on the interval is less than the change in y-value of g(x) on the same interval, so the average rate of change of f(x) is less than the average rate of change of g(x).