Question

find the weighted average of the numbers -4 and 5, with weight $\frac{3}{5}$ on the first number and $\frac{2}{5}$ on the second number.

Explanation:

Step1: Multiply first number by its weight

$-4\times\frac{3}{5}=-\frac{12}{5}=- 2.4$

Step2: Multiply second number by its weight

$5\times\frac{2}{5} = 2$

Step3: Add the two results

$-2.4 + 2=-0.4$

Answer:

-0.4