Grade 8 Math

A car traveled 281 miles in

4 hours 41 minutes. What was the average speed of the car in miles per

hour?

In a group of 120 people, 90

have an age of more 30 years, and the others have an age of less than 20

years. If a person is selected at random from this group, what is the

probability the person's age is less than 20?

The length of a rectangle is

four times its width. If the area is 100 m² what is the length of the

rectangle?

A six-sided die is rolled

once. What is the probability that the number rolled is an even number

greater than 2?

• 1/3

• 2/6

• 6/6

• 3/6

Point A has the coordinates (2,2). What are the coordinates of its image point if it is translated 2 units up and 5 units to the left, and reflected in the x axis?

• -5,-4

• -3,-4

• 3,4

• 5,4

Initially the rectangular prism on the left was full of water. Then water was poured in the right cylindrical container so that the heights of water in both containers are equal. Find the height h of water in both containers.(round your answer to the nearest tenth of a cm).

• .72 cm

• 72 cm

• 0.72 cm

• 7.2 cm

Use the figures to answer the question.

Rectangle ABCD is similar to rectangle RSTU. What is the value of x?

• 4

• 5

• 8

• 20

What is the value of x in 3(x – 4) = –21?

• x = –11

• x = –3

• x =3

• x = 11

Use the coordinate grid to answer the question.

Which four points would be the vertices of a square?

• points A, B, G, F

• points A, C, E, D

• points B, C, H, G

• points A, C, H, F

Use the diagram to answer the question.

The lines n and p are parallel. Which angle is supplementary to ∠7?

• ∠2

• ∠3

• ∠6

• ∠8