What is a proportion?
Proportions

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•
Mathematics
•
6th - 7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A proportion is an equation that states that two ratios are equal.
2.
FLASHCARD QUESTION
Front
How do you solve for x in a proportion?
Back
To solve for x in a proportion, cross-multiply the terms and then isolate x.
3.
FLASHCARD QUESTION
Front
If a car travels 420 miles in 8 hours, what is its speed in miles per hour?
Back
Speed = Distance/Time = 420 miles / 8 hours = 52.5 miles per hour.
4.
FLASHCARD QUESTION
Front
What is the formula for finding a missing value in a proportion?
Back
If a/b = c/d, then ad = bc. You can solve for the missing value using this formula.
5.
FLASHCARD QUESTION
Front
If x/4 = 3/12, what is the value of x?
Back
x = 4 * (3/12) = 1.
6.
FLASHCARD QUESTION
Front
What is the relationship between ratios and proportions?
Back
Ratios compare two quantities, while proportions show that two ratios are equal.
7.
FLASHCARD QUESTION
Front
If 5/15 = x/45, what is the value of x?
Back
x = (5/15) * 45 = 15.
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