Answer:
8
Step-by-step explanation:
E = 15, V = 9, F =?
By Euler's rule, we have:
F + V - E = 2
F + 9 - 15 = 2
F - 6 = 2
F = 6 + 2
F = 8
Answer: x= -2, y= 3
Step-by-step explanation:
3x+5y=9
X-y=-5
Multiply bottom equation by 5
3x+5y=9
5x-5y=-25
3x + 5x=8x
5y-5y cancels out
9-25= -16
8x= -16
X= -2
Plug -2 back into equation of choice to find y
3(-2)+5y=9
-6+5y=9
Add -6 to both sides
-6+6 cancels
9+6=15
5y=15
Y=3
25% means 1/4, as 25/100 is simplified into 1/4.
Multiply 18 by 4 to get your missing number.
18 x 4 = 72.
72 is your missing number.
Answer:
6
Step-by-step explanation:
I hope this helps :)