Question

the coordinate 3 has a weight of 2, and the coordinate 9 has a weight of 1. find the weighted average. the weighted average is .

Explanation:

Step1: Calculate the numerator

Multiply each value by its weight and sum. $(3\times2)+(9\times1)=6 + 9=15$

Step2: Calculate the denominator

Sum the weights. $2 + 1=3$

Step3: Calculate the weighted - average

Divide the numerator by the denominator. $\frac{15}{3}=5$

Answer:

5