Answer:
7.
Step-by-step explanation:
Range = highest value - lowest
= 9 - 2
= 7.
Answer: D
Step-by-step explanation:
The perimeter is all the sides added up
2.5x + 2.5x + 10 + 2 + 10 =>
5x + 22
It is also given that the perimeter is 10.5x
meaning that both these values are equal
5x + 22 = 10.5x
From my notes I’ve the derivative of arctan(x)= 1/(1+x^2)
-70.04 B would be the correct one
