Answer:
9/20 = 0.45
Step-by-step explanation:

Answer:
Step-by-step explanation:
1. You must apply the formula for calculate the area of a triangle, which is shown below:

2. You know the height and the base, which are given in the problem. Then, you only need to substitute them into the equation shown above and simplify it, as following:


Answer:

Step-by-step explanation:
Given

Required
The average rate over ![[2,b]](https://tex.z-dn.net/?f=%5B2%2Cb%5D)
Average rate (m) is calculated using:

Where
![[a,b] = [2,b]](https://tex.z-dn.net/?f=%5Ba%2Cb%5D%20%3D%20%5B2%2Cb%5D)
So, we have:

Calculate f(b) and f(2)



So, we have:



Expand the numerator

Factorize

Factor out 3b + 6

Cancel out b - 2

Answer:
5/20
Step-by-step explanation:
Divide 25/100 by 5 and you get 5/20.