2 MU Make Up Spiral Review #2

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Multiply both sides by 2 to solve for c.

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What is a scale factor in geometry?

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A scale factor is a number that scales, or multiplies, some quantity. It is used to enlarge or reduce figures.

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What is the difference between diameter and radius in a circle?

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The radius is half the diameter; it is the distance from the center of the circle to any point on its circumference.

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How do you calculate the percent of change from one value to another?

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Percent of change = ((New Value - Old Value) / Old Value) * 100.

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What is the formula for finding the area of a circle?

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What does it mean to solve an equation?

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To solve an equation means to find the value(s) of the variable(s) that make the equation true.

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What is the definition of a variable in mathematics?

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A variable is a symbol used to represent an unknown value.

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What is the relationship between multiplication and division in solving equations?

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Multiplication and division are inverse operations; they can be used to isolate variables in equations.

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What is the formula for calculating the circumference of a circle?

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