Chapter 7.4, Problem 40CCR

To determine

Find the value of the expression $b(a+c)$ when a = 8, b = − 4 and c = − 15

Answer to Problem 40CCR

  $b(a+c)=28$

Explanation of Solution

Given:

Find the value of the expression $b(a+c)$ when a = 8, b = − 4 and c = − 15

Concept Used:

Plug in the value of a = 8, b = − 4 and c = − 15 into the expression $b(a+c)$

Calculation:

Plug in the value of a = 8, b = − 4 and c = − 15 into the expression $b(a+c)$

  $\begin{array}{l}b(a+c)\Rightarrow a=8;b=-4;c=-15\\ b·(a+c)=-4·(8+-15)=-4·(8-15)=-4·-7=28\\ \end{array}$

Thus, $b(a+c)=28$