M8 Review for Exam #3 (2024-2025)

If you reflect the point (-7, 2) over the y-axis, which of these will be its image?

• (2, -7)

• (7, 2)

• (-7, -2)

• (-2, 7)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Karen cut a triangle out of paper, ripped the three angles off of the triangle, and placed them vertex-to-vertex as shown below. What idea has Karen just informally proven?

• The three angle measures of any triangle are all equal to 60˚.

• The area of a triangle is always greater than its perimeter.

• The three angle measures of any triangle have a sum of 180˚.

• All triangles follow the rule a² + b² = c².

Tags

CCSS.8.G.A.5

If the diameter of a bowling ball is 8.5 inches, what is the volume of this bowling ball?

Remember . . . V = 4/3πr³

• 298 in³

• 2,387 in³

• 322 in³

• 2,572 in³

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

In solving a system of linear equations by elimination,

all of your variables disappear and you’re

left with 0 = 23. This means . . .

• x = 0

  and

  y = 23

• There are INFINITELY MANY SOLUTIONS to the system.

• x = 23

  and

  y = 0

• There is NO SOLUTION to the system.

Tags

CCSS.8.EE.C.8B

If ΔABC (A = (4,8), B = (20,12), C = (16,4)) undergoes a dilation to become ΔDEF (D = (1,2), E = (5,3), F = (4,1)), find the scale factor involved in this dilation.

• 2

• 4

• 0.5

• 0.25

Tags

CCSS.8.G.A.3

If one acute angle of a right triangle is 32°,

find the measure of the other acute angle.

• 46°

• 58°

• 146°

• 68°

Tags

CCSS.8.G.A.5

• 2,107 in³

• 2,814 in³

• 704 in³

• 2,519 in³

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

The total of Nate and Rose’s ages is 48.  Rose is two years younger than Nate. Which of the following systems of equations could be solved to find Nate and Rose’s ages?

• N + R = 48

  R = N – 2

• N = R + 48

  R = N – 2

• N = R + 48

  R = N + 2

• N + R = 48

  R = N + 2

Tags

CCSS.HSA.CED.A.3

Which of the following is the result of rotating the point (-2, 5)  270° counter-clockwise ?

• (-2, -5)

• (5, -2)

• (2, 5)

• (5, 2)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the sum of the angle measures in any decagon?

• 1440°

• 1800°

• 1260°

• 1620°