Answer:
x = 2.5
Step-by-step explanation:
Divide 2.48 by 10 to find the price of 1 slice. = 0.248
Do the same with the other price.
3.18 / 12 = 0.265
The best one to get would be the 10 cheese slices because a single slice is cheaper than the single slices for the 12 slices.
hope this helped! (:
Answer:
<h2>12</h2>
Step-by-step explanation:
So our equation is:
(7x+5)+(5x+3)+(12x-20) = 276
First remove parenthesis:
7x+5+5x+3+12x-20=276
Combine like terms:
24x-12 = 276
Add 12 on both sides:
24x = 288
Divide:
288/24 = 12
Cannot guarantee. But I believe the answers are:
1) (3,2)
2) (3,-2)
3) (-3,2)
4) (-3,-2)
Edit: These are correct. When you substitute these into each equation,you get 72.
The negatives work because (-x)^2 = positive
Using online calculators is great