Answer:
5
Step-by-step explanation:
Answer:
1/2
Step-by-step explanation:
Yes, if all 8 of the students shared the cost of $100 dollars equally, that would mean each student paid $12.50.
Answer:
3/2 or 1 1/2
Step-by-step explanation:
.
Answer:
x = -5 y = -3
Step-by-step explanation:
-3x + 2y = 9
multiply the 2nd equation by 3 to set it up for elimination
3(x - 3y)= 3(4)
3x-9y = 12
so now combine both to add
-3x + 2y = 9
3x - 9y = 12
Adding both gives you
-7y = 21
divide both by -7 and you get
y = -3
and you substitute y back into equation to get x
x - 3 (-3) = 4 gives you
x + 9 = 4
x = 4 - 9
x = -5
