evaluate $ab - 0.5b$ when $a = 1$ and $b = 5$.

evaluate $ab - 0.5b$ when $a = 1$ and $b = 5$.

evaluate $ab - 0.5b$ when $a = 1$ and $b = 5$.

Answer

Answer:

$2.5$

Explanation:

Step1: Substitute values

Substitute $a = 1$ and $b = 5$ into $ab-0.5b$. $1\times5 - 0.5\times5$

Step2: Calculate multiplications

Calculate $1\times5$ and $0.5\times5$. $5-2.5$

Step3: Calculate subtraction

$5 - 2.5=2.5$