In math the sum means to add
Answer:

Explanation:
[ Divide Both Sides By 12y ]
12xy / 12y = 5z / 12y
- PNW
Answer:
n^2 = n + 30
n^2 -n -30 = 0
Solving by quadratic formula
numbers equal 6 AND -5
DOUBLE -CHECK
6^2 -6 -30 = 0
36 -6 - 30 = 0 CORRECT
-5^2 - -5 -30 = 0
25 +5 -30 = 0 CORRECT
Two numbers 6 and -5
Step-by-step explanation:
Answer:
3. C=4a
Step-by-step explanation:
600/150 = 4 (one square foot = $4)