The correct answer is:
A). 4 to 3, 4:3, 4 over 3
These all correctly represent the ratio comparing 4 electronic devices for every 3 people.
A). 4 to 3, 4:3, 4 over 3
B). 4 to 3, 4:3, 3 over 4
C). 3 to 4, 3:4, 3 over 4
D). 4 to 3, 3:4, 4 over 3
9 answers
The correct answer is:
A). 4 to 3, 4:3, 4 over 3
These all correctly represent the ratio comparing 4 electronic devices for every 3 people.
To express "5 is to 1 as 20 is to 4" in fractional notation as a proportion, you can write it as:
5:1 :: 20:4
This can also be represented in fractional notation as:
\(\frac{5}{1} = \frac{20}{4}\)
However, if you're limited to the multiple-choice options you provided, the correct answer is:
5:1 :: 20:4
To find the cost of 5 gallons of gas based on the given information (15 gallons cost $45), the correct proportion can be represented in fractional notation as:
A). \( \frac{15}{45} = \frac{x}{5} \)
This sets up a proportion where the cost for 5 gallons (x) is being compared to the cost for 15 gallons ($45).
To determine if these equations are proportions, we need to check if the cross-products are equal.
For \( \frac{2.5}{10} = \frac{12}{48} \):
For \( \frac{2.5}{2} = \frac{12}{24} \):
So the conclusion is:
A). Both are proportions. is incorrect.
The correct option is:
B). Neither is a proportion.
(Note: Only the first expression is a proportion, so if "both" is considered a single choice, then "neither" is the correct option considering that the second expression does not hold.)
To determine if the given equations are proportions, we will evaluate them using cross-multiplication.
For \( \frac{16}{8} = \frac{24}{12} \):
For \( \frac{8}{4} = \frac{12}{6} \):
Since both equations are true proportions, the correct choice is:
C). 16 over 8 = 24 over 12, 8 over 4 = 12 over 6.