Setup Average Equation:
_____________________
Average=Sum of our 4 numbers + unknown number of x
____________________________________
Total Numbers
15 = 3 + 19 + 8 + 32 + x
______________
5
Cross Multiply
___________
3 + 19 + 8 + 32 + = 15 x 5
x + 62 = 75
Subtract 62 from both sides of the equation to isolate x:
___________________________________________
x + 62 - 62 = 75 - 62
x = 13
Answer:
Step-by-step explanation:
v=3p(w-r)
v=3pw-3pr
v+3pr=3pw
(v+3pr)/3p=w
Answer:
16
Step-by-step explanation:
8 =10%
8x2=16
16 is 20%
32=40%
8x4=32
32-16
3x + 2y = 6....solution (0,3)
-5x + y = -10...solution (1,-5)
x - 4y = 8...solution (4,-1)
-6x - 5y = 30...solution (0,-6)