Semester Test Study Guide - Trashketball Review

Front

What is the solution to the equation k = 20.6, k = 53.9, k = 2.1, k = -2.1 if the answer is k = 2.1?

Back

The solution is k = 2.1.

Front

How do you calculate the total height of a stack of 8 bricks, each 3 1/2 inches thick?

Back

Total height = Number of bricks × Thickness of each brick = 8 × 3.5 = 28 inches.

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Front

What is the result of the equation 8 - 10?

Back

The result is -2.

Front

Define 'variable' in mathematics.

Back

A variable is a symbol used to represent an unknown value, often denoted by letters such as x, y, or z.

Front

What is the definition of 'expression' in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, ×, ÷) that represents a value.

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What does it mean to 'simplify' an expression?

Back

To simplify an expression means to reduce it to its simplest form by combining like terms and performing operations.

Front

What is a 'coefficient' in an algebraic expression?

Back

A coefficient is a numerical factor that multiplies a variable in an expression, such as 2 in 2x.

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What is the order of operations in mathematics?

Back

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often abbreviated as PEMDAS.