What is a ratio?
Envisions Math Topic 2 Review

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•
Mathematics
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.
2.
FLASHCARD QUESTION
Front
If the ratio of boys to girls is 2:3 and there are 25 girls, how many boys are there?
Back
17 boys.
3.
FLASHCARD QUESTION
Front
What is the constant of proportionality in the equation y = ⅜x?
Back
The constant of proportionality is ⅜.
4.
FLASHCARD QUESTION
Front
How do you find the total cost y for x sheets of stickers if each sheet costs $2.45?
Back
Use the equation y = 2.45x.
5.
FLASHCARD QUESTION
Front
What does it mean if two quantities are proportional?
Back
Two quantities are proportional if they maintain a constant ratio to each other.
6.
FLASHCARD QUESTION
Front
On a map, if 1 inch equals 10 miles, how do you calculate the actual distance between two cities that are 7 inches apart?
Back
Multiply the distance on the map (7 inches) by the scale (10 miles/inch) to get 70 miles.
7.
FLASHCARD QUESTION
Front
What is the formula for finding the total cost of items?
Back
Total Cost = Price per Item × Number of Items.
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