Answer:
x = 2 and y = -2
Step-by-step explanation:
a) 5x-4y = 18
b) x+3y = -4
b) x = -3y - 4
a) 5 (-3y - 4) - 4y = 18 (substitution)
a) - 15y - 20 - 4y = 18
a) -19y = 18 + 20
a) y = 38/-19
y = -2
b) x + 3(-2) = -4
b) x - 6 = -4
x = 6-4 = 2
What is the mean average of 100, 75, 40, 90, 80, 100, 92, 88, 80, 84, 81?
eduard
Answer:
The mean average is 82.727272727273
Answer:
Step-by-step explanation:
Answer: 3^2 = 1/9
3^0 = 1
3^1 = 3
3^3 = 27
Answer:
8
Step-by-step explanation:
i hope this helps :)
Answer:
the answer I think your looking for is C