How do you write 5 is to 1 as 20 is to 4 as a proportion in fractional notation?(1 point)
Responses
5:1 :: 20:4
ratio of 5 to 1 colon colon ratio of 20 to 4
54=120
start fraction 5 over 4 end fraction equals start fraction 1 over 20 end fraction
51=204
start fraction 5 over 1 end fraction equals start fraction 20 over 4 end fraction
51=420
start fraction 5 over 1 end fraction equals start fraction 20 over 4 end fraction
You fill your car with 15 gallons of gas at a cost of $45. Using fractional notation, how do you write a proportion that shows how much 5 gallons of gas will cost? Use x to represent the unknown cost.
To write a proportion that shows how much 5 gallons of gas will cost, we can set up the following proportion:
15 gallons / $45 = 5 gallons / x
This proportion states that the ratio of the number of gallons to the cost is the same for both situations. The unknown cost, represented by x, is what we want to find.
You fill your car with 15 gallons of gas at a cost of $45. Using fractional notation, how do you write a proportion that shows how much 5 gallons of gas will cost? Use x to represent the unknown cost.(1 point)
Responses
1545=5x
Start Fraction 15 over 45 End Fraction equals Start Fraction 5 over x End Fraction
15x=455
Start Fraction 15 over x End Fraction equals Start Fraction 45 over 5 End Fraction
1545=x5
Start Fraction 15 over 45 End Fraction equals Start Fraction x over 5 End Fraction
15:45::x:5
ratio of 15 to 45 colon colon ratio of x to 5
Start Fraction 15 over 45 End Fraction equals Start Fraction 5 over x End Fraction
Determine if 2.510=?1248 or 2.52=?1224 is a proportion.(1 point)
Responses
Both are proportions.
Both are proportions.
Neither is a proportion.
Neither is a proportion.
2.52=1224
Start Fraction 2.5 over 2 End Fraction equals Start Fraction 12 over 24 End Fraction
2.510=1248
Neither is a proportion.
Determine if one, both, or neither of the following is a proportion. 168=?2412, 84=?126(1 point)
Responses
168=2412, 84=126
Start Fraction 16 over 8 End Fraction equals Start Fraction 24 over 12 End Fraction , Start Fraction 8 over 4 End Fraction equals Start Fraction 12 over 6 End Fraction
Neither is a proportion.
Neither is a proportion.
84=126 only
Start Fraction 8 over 4 End Fraction equals Start Fraction 12 over 6 End Fraction only
168=2412 only
Start Fraction 8 over 4 End Fraction equals Start Fraction 12 over 6 End Fraction only.
To write the proportion "5 is to 1 as 20 is to 4" in fractional notation, you need to set up a ratio where the numerators represent the first set of numbers and the denominators represent the second set of numbers.
The correct answer is:
Start fraction 5 over 1 end fraction equals start fraction 20 over 4 end fraction