Answer:$54 sales tax $24
Step-by-step explanation:
y=4
the values of x changes while the y doesn't so it's y=4
Find the average of the list of numbers.
- 18, - 29, - 17, - 12
I believe the answer is 40%
Not entirely sure, hope I helped though!
Create 2 equations for the given problem
12s + 44c = 42
44s + 12c = 30
Take either equation and solve for either s or c.
12s + 44c = 42
12s = 42 - 44c
s = (42 - 44c) / 12
s = (21 - 22c) / 6
Substitute into 2nd equation
44s + 12c = 30
22((21 - 22c) / 3) + 12c = 30
22(21 - 22c) + 36c = 90
-448c +462 = 90
-448c = -372
c = -372/-448
c = 93/112
c = 0.83
Substitute into the 2nd equation
44s + 12c = 30
44s = 30 - 12c
s = (30 - 12 (93/112)) / 44
s = (30 - 279 / 28) / 44)
s = (30 - 9 27/28) / 44
s = 0.46
Prove
12s + 44c = 42
12(0.46) + 44(0.83) = 42
5.52 + 36.52 = 42
42.04 = 42
44s + 12c = 30
44(0.46) + 12(0.83) = 30
20.24 + 9.96 = 30.16
Assuming minor rounding issues this looks accurate.
