We call the ratio between two directly proportional quantities the constant of proportionality. When two quantities are directly proportional, they increase and decrease at the same rate. While these two quantities may increase or decrease, the constant of proportionality always remains the same.
Answer:

Step-by-step explanation:
The formula is given as:

We need to solve this formula for v, that means that v to one side and let it be solved in terms of the other variables (E and m). First, we isolate v:

To isolate v, and eliminate the "square", we need to take square roots of both sides, that will give us v in terms of the other variables:

Putting v to left side (convention), we finally have:

Answer:
26
Step-by-step explanation:
=15(2) - 2(2)
=30 - 4
=26
Answer:
40%
Step-by-step explanation:
38×100=3800÷95=40
40%×95=38
Answer:
$44.40
Step-by-step explanation:
Markup is the difference between the sell price and the cost of building
1) Find total cost of building the lawn mower: $35 + $39.17 + $36.43 = $110.6
2) Subtract the total cost from the sell price: $155.00 - $110.6 = $44.40