8th Winter Exam Practice #1

Front

Unit Conversion: How do you convert miles per hour to feet per second?

Back

To convert miles per hour (mph) to feet per second (ft/sec), multiply the speed in mph by 1.46667. For example, 62 mph is approximately 90.9 ft/sec.

Tags

CCSS.6.RP.A.3D

Front

Simplify the Expression: 2r - 2(7r + 8) + -4

Back

The simplified expression is -12r - 20.

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CCSS.6.EE.A.3

Front

What is the formula for finding the slope of a line?

Back

The slope (m) is calculated as m = (y2 - y1) / (x2 - x1).

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CCSS.8.EE.B.5

Front

Evaluate the expression: b^2 + 4 when b = -3

Back

When b = -3, the expression evaluates to 13.

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CCSS.6.EE.A.2C

Front

How do you calculate percent decrease?

Back

Percent decrease is calculated using the formula: ((original price - sale price) / original price) * 100. For example, the percent decrease from $65.50 to $52.40 is 20%.

Tags

CCSS.6.RP.A.3C

Front

What is the definition of a variable in algebra?

Back

A variable is a symbol (often a letter) that represents a number in mathematical expressions or equations.

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CCSS.6.EE.A.2B

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to combine like terms and reduce it to its simplest form.

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CCSS.7.EE.A.1

Front

What is the difference between a rational and an irrational number?

Back

A rational number can be expressed as a fraction of two integers, while an irrational number cannot be expressed as a simple fraction.

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CCSS.8.NS.A.1

Front

What is the Pythagorean theorem?

Back

The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two sides (a and b): a^2 + b^2 = c^2.

Tags

CCSS.8.G.B.8

Front

How do you find the area of a rectangle?

Back

The area of a rectangle is found by multiplying its length by its width: Area = length × width.

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CCSS.3.MD.C.7B

CCSS.4.MD.A.3