8th Grade Math Mixed Review

Which of the following shows a list of values in decreasing order?

• -6.007, -2π, -√48

• -2π, -√48, -6.007

• -2π, -6.007, -√48

• -6.007, -√48, -2π

A square serving platter has an area of 124 in² . Which is the best estimate of one side length of the platter?

• 31 inches

• 11.6 inches

• 11.8 inches

• 11.1 inches

Solve the equation below:

14x - 34 = 11x + 29

• x=5

• x=21

• x=25

• x=16

Mike is driving a boat at 12 mph and is increasing his speed by 0.2 mph each second. Hank is driving a boat at 25 mph and is decreasing his speed by 0.7 mph each second. Which of the following equations could be used to determine x, the number of seconds it will take for the boats to be traveling the same speed?

• 12x + 0.2 = 25x - 0.7

• 12 - 0.2x = 25 + 0.7x

• 12.2x = -25.7x

• 12 + 0.2x = 25 - 0.7x

Which of the following graphs represents a functional relationship between x and y?

• 
• 
• 
• 

Which situation could be represented by the graph shown?

• Garret buys limes for $.80 each.

• Sophia buys 12-packs of soda for $1.75 each.

• Jacob buys packs of gum for $1.50 each.

• Allison purchases lemons for $0.75 each.

Which pair of angles is an example of supplementary angles?

• Angle 1 and Angle 7

• Angle 3 and Angle 6

• Angle 2 and Angle 7

• Angle 1 and Angle 4

Using the triangle, set up and solve an equation in order to find the value of x.

• x = 12

• x = 6

• x = 9

• x = 4

Which of the following is not a true statement about the sides of a right triangle?

• The hypotenuse is the longest side.

• The legs are the sides adjacent to the 90⁰ angle.

• Side "a" is always longer than side "b".

• The hypotenuse is opposite the 90⁰ angle.

Find x, the missing side length in the right triangle.

• x = 22

• x = 16

• x = 32

• x = 27