How do you write 5 is to 1 as 20 is to 4 as a proportion in fractional notation?(1 point)
Responses
51=420
start fraction 5 over 1 end fraction equals start fraction 4 over 20 end fraction
5:1 :: 20:4
ratio of 5 to 1 colon colon ratio of 20 to 4
51=204
start fraction 5 over 1 end fraction equals start fraction 20 over 4 end fraction
54=120
start fraction 5 over 1 end fraction equals start fraction 20 over 4 end fraction
Describe three ways to write the ratio that compares 4 electronic devices for every 3 people.(1 point)
Responses
4 to 3, 4:3, 34
4 to 3, ratio of 4 to 3 , Start fraction 3 over 4 end fraction
3 to 4, 3:4, 34
3 to 4, ratio of 3 to 4 , Start fraction 3 over 4 end fraction
4 to 3, 4:3, 43
4 to 3, ratio of 4 to 3 , Start fraction 4 over 3 end fraction
4 to 3, 3:4, 43
4 to 3, ratio of 4 to 3 , Start fraction 4 over 3 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.(1 point)
Responses
1545=x5
Start Fraction 15 over 45 End Fraction equals Start Fraction x over 5 End Fraction
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
15:45::x:5
Start Fraction 15 over 45 End Fraction equals Start Fraction x over 5 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.
2.510=1248
Start Fraction 2.5 over 10 End Fraction equals Start Fraction 12 over 48 End Fraction
2.52=1224
Start Fraction 2.5 over 2 End Fraction equals Start Fraction 12 over 24 End Fraction
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
84=126 only
Start Fraction 8 over 4 End Fraction equals Start Fraction 12 over 6 End Fraction only
Neither is a proportion.
Neither is a proportion.
168=2412 only
Start Fraction 16 over 8 End Fraction equals Start Fraction 24 over 12 End Fraction only
168=2412 only.
Start Fraction 16 over 8 End Fraction equals Start Fraction 24 over 12 End Fraction only.
To write the proportion "5 is to 1 as 20 is to 4" in fractional notation, you can use the following steps:
Step 1: Write the first ratio as a fraction.
The first ratio is "5 is to 1." To write this as a fraction, you put the first number (5) as the numerator and the second number (1) as the denominator. So, the first fraction is 5/1.
Step 2: Write the second ratio as a fraction.
The second ratio is "20 is to 4." Similar to step 1, you put the first number (20) as the numerator and the second number (4) as the denominator. So, the second fraction is 20/4.
Step 3: Combine the fractions using the "equals" sign.
To represent the proportion, you use the "equals" sign between the two fractions. Therefore, the final proportion in fractional notation is:
5/1 = 20/4