Answer:
the answer
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Answer:
22.2 pounds and 1g = 7.4p
Step-by-step explanation:
Lets go in an inverse sense, finding firstly the constant variation and then the weight of 3 gallons.
The constant variation is the relation between gallons of diesel volume and pounds of diesel weight. For thise we would like to find how many pounds of diesel weights 1 gallon. We have the following equality:
5 gallons = 37 pounds
Now, lets divide both sided by 5, as we know the equality will still:
5/5 gallon = 37/ 5 pounds
1 gallon = 7.4 pounds
So, this is the constant variations: every extra gallons weights 7.4 pounds. We could also do this in terms of pounds, which means, parting from:
5 gallons = 37 pounds
Divide both sides by 37:
5/37 gallons = 1 pound
0.081 gallons = 1 pound
Every extra pound means 0.081 more gallons.
Now, as we want the weight of 3 gallons we can use our first relation and multiplying by 3:
1 gallon = 7.4 pounds
3 gallons = 22.2 pounds
Step-by-step explanation:
all we need to do is find the surface area, deduct windows and door areas.
that gives us the m² to be covered, which we have to multiply by $12.50 to get the total price.
what is the problem ? there are only trivial multiplications (with a calculator), additions and subtractions.
the house surface area is like for a box, but we don't care about the top and the bottom. only about the walls.
the "box" is 18 m × 14 m × 4 m.
so, the front and the back walls are each
18m × 4 m = 72 m²
both front and back : 2×72 = 144 m²
each side wall is
14m × 4m = 56 m²
both sides : 2×56 = 112 m²
now for the deductions.
each window is
1.5 × 2 = 3 m²
both windows : 2×3 = 6 m²
the door is
1 × 2.5 = 2.5 m²
so, the total area to "side" is
144 + 112 - 6 - 2.5 = 247.5 m²
to side 247.5 m² it costs
247.5 × 12.5 = $3,093.75
Answer:
0 ≤ x ≤ 30
Step-by-step explanation:
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