Question

Evaluate 7j+5-8k when j=0.5 and k=0.25

Answer 1

Answer:

6.5

Step-by-step explanation:

$7j + 5 - 8k \\ = 7 \times 0.5 + 5 - 8 \times 0.25 \\ = 3.5 + 5 - 2.00 \\ = 8.5 - 2 \\ = 6.5$

Answer 2

Answer:

6.5

Step-by-step explanation:

So, for this equation you need to plug in the number that they give for that variable.

I hope this helps you visualize the equation.

7j+5-8k

7(0.5)+5-8(0.25)

7×0.5=3.5

3.5+5-8(0.25)

-8×0.25=-2

3.5+5-2

8.5-2=6.5

Hope this helped!!