Answer:
c
Step-by-step explanation:
Answer:
x=-3
Y=-5
Step-by-step explanation:
2x-y=-1 ×2
3x-2y=1. ×1
4x-2y= -2
3x-2y=1
eliminate y by subtracting
Answer:
I believe that x is equal to 10
Step-by-step explanation:
Answer:
55 adult tickets were sold on Friday.
Step-by-step explanation:
A linear system will be used to model the system.
Let c be the number of child tickets and a be the number of adult tickets
Then according to given statements

From equation 1

Putting this in equation 2

Putting c = 78 in equation 1

Hence,
55 adult tickets were sold on Friday.
-1 <span>± </span><span><span>√61 / 6. Negative 1, plus or minus square root of 61 divide by 6</span></span>