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timama [110]
2 years ago
15

Four gallons of gasoline cost 14 dollars. complete the chart.

Mathematics
1 answer:
AveGali [126]2 years ago
3 0

Answer:

Step-by-step explanation:

We pay $14 for 4 gallons, so if we split the $14 in 4 equal parts we will know how much we pay for 1 gallon ( the unit price.)

Then if we know the price we pay, like $7, we can see how many gallons we have because we know the unit price.

Then if we know how many gallons we have, we can see how much we have to pay because again we know the unit price.

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the sides of a rectangle are the ratio 2:5. (for every 2cm of the width, the length is 5cm) the perimeter of the rectangle is 70
viva [34]
------------------------------------------------------------------------------------
Ratio
------------------------------------------------------------------------------------
Width : Length
    2    :   5 

Let x be the scale factor

Width : Length
    2x    :   5x

------------------------------------------------------------------------------------
Form equation and solve x
------------------------------------------------------------------------------------
Perimeter = 2(Length + Width)
70 = 2(5x + 2x)
70 = 2(7x)
70 = 14x
14x = 70
x = 5

------------------------------------------------------------------------------------
Find Length and Width
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Length = 5x 
Length = 5(5) 
Length = 25

Width = 2x
Width = 2(5)
Width = 10

------------------------------------------------------------------------------------
Answer: Length = 25 cm, Width = 10 cm
------------------------------------------------------------------------------------
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