Answer:
Step-by-step explanation:
Zinc:copper = 4:11
Amount of zinc = 4x
Amount of copper = 11x
11x = 418
x = 38 grams
Amount of zinc = 4x = 152 grams
Answer:
x= -10
Step-by-step explanation:
Step-by-step explanation:
circle=6
square=9
circle =10
square=? or x
ratio
6:10::9:x
product of mean =product of extreme
6x =9×10
6x=90
x=90/6
x=15
so there will be 15 square
The answer would be D.
you would start by choosing one of the variables to eliminate, i chose to eliminate X first. in order to eliminate X, i had to multiply the second equation by -2. X then cancelled out, and i solved for the Y the same way you would a 1 step equation. Y=-4
I then took the first original equations, plugged Y in, and solved for X. X=3.
Hope this helps!
