Answer:
3
Step-by-step explanation:
90% in a fraction is the same as 90/100 simplified, is 9/10.
Hope this helps
Answer:
1 sub = $5.50; 1 sandwich = $4.00
Step-by-step explanation:
You can solve this using a matrix and solving using reduced row-echelon form.
18+18+l+l=52
36+2l=52
-36 -36
2l=16
÷2 ÷2
l=8
Length of the rectangle is 8
Answer:
-3
Step-by-step explanation:
-11b + 7 = 40
Subtract both sides by 7.
-11b = 33
Divide both sides by -11.
b = -3
