Rounded off to the nearest tens

Dana is training to run a marathon. On Monday, she ran 10.2 miles. On Tuesday, she ran 11.4 miles. On Wednesday and Thursday, she ran 11.8 miles each day. On Friday, she ran 12.3 miles.

A pogo stick cost $30. A scooter cost $40 more than the pogo stick. A bicycle cost $50 more than the scooter. What was the total cost of all three?

The sum of t and 2 is equal to 5 less than t

The city has 78 buses. 33% of them are new and cause less pollution. If the city replaces 15 old buses with new ones, what percent of the buses will be new?

Factorizationa x^{2} b+ab+ab x^{2} - a-b-1

Zina spends 1.5 hours setting up her sewing machine and making one hat. The total amount of time spent making hats can be represented by the sequence below. 1.5, 2.25, 3.0, 3.75, ...

How many times smaller is the volume of a cylinder if the diameter is multiplied by 1/2

What is 3w (p + 18) equal?

Which of the following are the measurements of the sides of a right triangle? a. 7, 14, 16 b. 6.2, 13.8, 20 c. 10, 11, 13 d. 9, 12, 15

A candidate for mayor promises to reduce property taxes in the city by 2% per year while in office. Suppose the average citizen paid about $9000 per year in property taxes before the election.