Mathematical Equivalence

ON

Krypton is a chemical substance. Krypton has a constant proportionality between its mass and volume. The constant of proportionality is 3.75 grams/liter.

Use the dots to click and drag to create the correct line.

• greater than
• less than

A school holds an election for class president. The percentage of votes received by Taylor, Alex, and Cameron are shown in the graph on the left.

What percentage of the votes did Taylor receive?

• 48%

• 52%

• 71%

• 81%

Click the box to match the equivalent expressions.

• 15
• 240
• 64
• 56

Select all the representations that show a proportional relationship between x and y.

• 
• 
• 
• 
• 

Complete the statement to evaluate Jeffrey's claim, then enter the theoretical probability of spinning green.

Based on the results, Jeffrey's claim is​ ​ (a)   because the experimental probability of the spinner arrow stopping on green ​ (b)   the closest of the four colors to the theoretical probability.

The theoretical probability of spinning green is ​ (c)  

• true
• is
• 250/1000
• false
• is not
• 254/1000

Omar uses a laser printer that prints 30 pages per minute. On Monday, he prints 8 pages. On Tuesday, he prints more pages. Omar prints a total of 143 pages on Monday and Tuesday. Let m be the amount of time, in minutes, he spends printing on Tuesday.

Which of the following is an equation using m to model the amount of time Omar spends printing on a Tuesday.

• 8m+30=143

• 30m+8=143

• 38m=143

• 143+30m=8

Omar uses a laser printer that prints 30 pages per minute. On Monday, he prints 8 pages. On Tuesday, he prints more pages. Omar prints a total of 143 pages on Monday and Tuesday. Let m be the amount of time, in minutes, he spends printing on Tuesday.

How many minutes does it take Omar to print the pages on Tueday

• 4.5

• 5

• 5.5

• 8