Answer:
8 hours
Step-by-step explanation:
!:!
Answer:
width = (21 - 2n) ÷ 2 or 21/2 - n
Step-by-step explanation:
To find Width
let's say width is x
so 2x + 2n = 21
take away 2n from both sides
then 2x = 21 - 2n
Divide both sides by 2 to get x on its own
x = 21 - 2n /2
therefore the width of the rectangle is 21 - 2n /2
Answer:
8x-20
Step-by-step explanation:
Multiply how much he makes for 1 job by how many times he did it: lawns: 10x10=$100. Car washes: 5x8=$40. Car waxes: 8x6=$48. Add them all together: 100+40+48=188. Subtract what he made from much he needs: 200-188=$12. He needs $12 more :)