Grade 7 | Unit 8 | Lesson 9: Multi-step Experiments | Practice Problems

A vending machine has 5 colors (white, red, green, blue, and yellow) of gumballs and an equal chance of dispensing each. A second machine has 4 different animal-shaped rubber bands (lion, elephant, horse, and alligator) and an equal chance of dispensing each. What is the probability of getting a yellow gumball and a lion band?

• 1/20

• 1/10

• 1/5

• 1/4

• 1/2

The numbers 1 through 10 are put in one bag. The numbers 5 through 14 are put in another bag. When you pick one number from each bag, what is the probability you get the same number?

• 1/10

• 3/20

• 6/100

• 1/5

• 3/50

• 100%

For each event, write the sample space and tell how many outcomes there are. Roll a standard number cube. Then flip a quarter.

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Select a month. Then select 2020 or 2025.

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On a graph of the area of a square vs. its perimeter, a few points are plotted. Add some more ordered pairs to the graph. Is there a proportional relationship between the area and perimeter of a square? Explain how you know. Description:

A coordinate grid with the horizontal axis labeled 'perimeter in units' and vertical axis labeled 'area in square units.' On both axes, the numbers 0 through 30, in increments of 2, are indicated. Two points with the coordinates (16, 16) and (20, 25) are indicated on the grid.

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