Solving Proportions
Flashcard
•
Mathematics
•
8th - 12th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a proportion?
Back
A proportion is an equation that states that two ratios are equal.
2.
FLASHCARD QUESTION
Front
How do you solve a proportion?
Back
To solve a proportion, cross-multiply the terms and then solve for the variable.
3.
FLASHCARD QUESTION
Front
If 8 sweets cost 72 cents, what is the cost of 1 sweet?
Back
9 cents.
4.
FLASHCARD QUESTION
Front
If a car travels 420 miles in 8 hours, what is its speed in miles per hour?
Back
52.5 miles per hour.
5.
FLASHCARD QUESTION
Front
What is the formula for finding a missing value in a proportion?
Back
If a/b = c/d, then ad = bc.
6.
FLASHCARD QUESTION
Front
How can you set up a proportion to solve for x in the equation 4/x = 2/8?
Back
Cross-multiply to get 4*8 = 2*x, which simplifies to x = 16.
7.
FLASHCARD QUESTION
Front
What is the relationship between the number of pizzas and sticks of pepperoni in the problem: Pat needs 14 sticks of pepperoni to make 28 pizzas?
Back
The relationship is a direct proportion; as the number of pizzas increases, the number of sticks of pepperoni increases.
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