"The perimeter P..." gives us one variable to work with.
"is" in this context almost always means "equals".
"the sum" we know we will be adding.
"twice the length l" gives us a variable and a coefficient.
"twice the width w" gives us a variable and a coefficient.
The equation for this is P=2l+2w
I hope in the future you can remember these tips! :)
1:3...added = 4
1/4(1) = 1/4......1/4 gallon cleaner <== or 32 oz
3/4(1) = 3/4......3/4 gallon water....or 96 oz
Answer:
6.25
Step-by-step explanation:
(x-a)^2=x^2-2ax+a^2
2a=5
a=2.5
2.5 ^ 2 = 6.25
The cost of each drink was 3.75
3/4+7/10 common denominator is 20
3/4+7/10
=5•3/20 +2•7/20
=15/20 +14/20
=29/20
=1 9/20
