Unit 3 Review

If there are 7 girls and 8 boys on the school’s track team, what is the ratio of girls to boys? Write your answer in three different ways.

• 7:8

• 8:7

• 8 to 7

• 7 to 8

During a road trip, Tom Brady stopped at two rest stops. He counted 20 cars and 18 trucks at the first rest stop. At the second rest stop, he counted 19 cars and 10 trucks. At which stop did Tom Brady count a lower ratio of cars to trucks?

• the first rest stop

• the second rest stop

• neither; the ratios are equivalent

3rd hour has 30 students and 13 of them are girls. 4th hour has 25 students and 12 of them are girls. Which class has a larger ratio of girls to boys?

• 3rd Hour

• 4th Hour

• The ratios are equivalent

Which ratio is equivalent to 9:12

• 12:9

• 3:4

• 2:4

• 4:3

A farmer find that 36 inches of snow is equivalent to 4.5 inches of water. How many inches of water are equivalent to 10 inches of snow?

• 81 inches

• 4.5 inches

• 10 inches

• None of the above

Find the value of x.

• 8 cm

• 10 cm

• 15 cm

• None of the above

A model of a statue is 10 inches tall. The scale factor for the model is the real life statue is 2.5 inches to 8 feet. How tall is the actual statue?

• 32 feet

• 2 feet

• 4.5 feet

• None of the above

Are the two triangles similar? Be sure you can explain why or why not.

• Yes

• No

A pendulum is 45 cm long. When is swings, it travels along the arc of a circle and covers a distance of 27.5 cm. Calculate the angle through which the pendulum travels.

• 35 degrees

• 25 degrees

• 1237.5 degrees

• None of the above

There are 110 students in 7th grade. 20% of the students in 7th grade get a ride to school. How many 7th graders get a ride to school?

• 22 students

• 20 students

• 27 students

• None of the above