Time to tests mathmaticians

Step-by-step explanation:

coordinates of A,B,C are A(5,15),B(15,5),C(20,10)

AB=√((15-5)²+(5-15)²)=√(100+100)=√200=10√2

BC=√((20-15)²+(10-5)²)=√(25+25)=√50=5√2

AC=√((20-5)²+(10-15)²)=√(225+25)=√250=5√10

Perimeter=10√2+5√2+5√10=15√2+5√10≈37 units

  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).

the y will be in still but your answer will be y x 3

step-by-step explanation:

jk: )