Answer:
v = 99
Step-by-step explanation:
Given v varies directly as g then the equation relating them is
v = kg ← k is the constant of variation
To find k use the condition v = 36 when g = 4 , then
36 = 4k ( divide both sides by 4 )
9 = k
v = 9g ← equation of variation
When g = 11 , then
v = 9 × 11 = 99
Answer:
the percent of Damon's earnings spent on electricity is20 percent
Answer:
I'm not completely sure about the first one, but #8 is 0.0419, and #9 is 30500.
First you subtract 4 to get it to the other side. Now the equation is -4=1/4x. Next, multiply both sides by 4 to isolate the x. Now you have -16=x.
Answer:
$15
Step-by-step explanation:
Let d represent the cost of the dinner before tip. Then $15 = 0.20d, since 0.20 is the decimal fraction corresponding to 20%.
Solving for d, the cost of the dinner, we divide both sides of the equation $15 = 0.20d by .20, obtaining:
$15
d = ------------ = $75
0.20
The cost of the dinner before tip was $75.