Answer: Subtract 18 on both sides is wrong. Its supposed to be add 18 on both sides.
Step-by-step explanation:
Answer:
the answer is C or 18x + 18y
Pretty sure x=-24.5 did the math. Check my answer before you submit anything
Answer:
9
±
3
i
√
7 / 2
Step-by-step explanation:
hope this helps
Answer:
6 hours
Step-by-step explanation:
Let
x----> the number of hours worked at the donut shop
y----> the number of hours worked at the school bookstore
we know that
x+y=20
x=20-y -----> equation A
10.25x+8.75y=196 -----> equation B
Substitute equation A in equation B and solve for y
10.25(20-y)+8.75y=196
205-10.25y+8.75y=196
10.25y-8.75y=205-196
1.5y=9
y=6 hours at the school bookstore
