Semester 1 Study Guide

Front

Back

To solve for x, cross-multiply: 27 * x = 90 * 18. Then, divide both sides by 27 to find x = 60.

Front

Simplify the expression: -9 - 8k + 5.

Back

Combine like terms: -9 + 5 = -4, so the expression simplifies to -4 - 8k.

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Back

Front

Back

Front

If Addison bought shoes for $80 and the tax was 10%, how much did the shoes cost after tax?

Back

Calculate the tax: 10% of $80 is $8. Therefore, the total cost after tax is $80 + $8 = $88.

Front

What is the definition of a fraction?

Back

Front

What does it mean to cross-multiply in equations?

Back

Cross-multiplying involves multiplying the numerator of one fraction by the denominator of the other to find a common value.

Front

Define an improper fraction.

Back

Front

What is the formula for calculating percentage?

Back

Front

How do you convert a mixed number to an improper fraction?

Back

Multiply the whole number by the denominator, add the numerator, and place the result over the original denominator.