Answer:
Constant of proportionality = 30
Example: r = 6, V = 5
Step-by-step explanation:
Inverse proportion: V*r = constant
Given r=3, V=10, constant = V*r = 30
Example:
r = 6, V = 30/6 = 5
100% - 70
---------------------
30% - x
W=1000C/tc
First multiply both side 1000: 1000C=Wtc
Divide both side by tc: 1000C/tc=W (t, c ≠0)
x=-2
y=5
x=28-6y
2x-3y=-19
(substitute the value of x)
2(28-6y)-3y=-19
x=28-6*5
