EdGems Unit 4 Review T

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity. In geometry, it is the ratio of the lengths of two corresponding sides of two similar figures.

Front

If two figures have a scale factor of 3:1, what does this mean?

Back

It means that for every 3 units in one figure, there is 1 unit in the other figure, indicating that one figure is three times larger than the other.

Front

What is the result of 7.4 - (-2.5)?

Back

9.9

Front

What is the result of 1 - (-5)?

Back

6

Front

How do you calculate the ratio of students with short hair to all students?

Back

To find the ratio, divide the number of students with short hair by the total number of students. In this case, 8 out of 10 students gives a ratio of 4:5.

Front

What is the balance if Cheri had $35.95 and withdrew $28.75?

Back

$7.20

Front

What is the definition of a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

Front

How do you simplify the ratio 8:10?

Back

Divide both numbers by their greatest common divisor, which is 2. The simplified ratio is 4:5.

Front

What does it mean to withdraw money from an account?

Back

Withdrawing money means taking out a certain amount of money from a bank account, which decreases the account balance.

Front

What is the formula for finding the balance in a bank account after a withdrawal?

Back

Balance = Initial Amount - Amount Withdrawn.