3a+2d^2-14+6a-4d-2d^2

A bag contains 11 green marbles, 17 red marbles, 23 yellow marbles, and 34 blue marbles. diego randomly chooses a marble from the bag. what is the probability that he will choose a red or blue marble? write your answer as a decimal.

Divide £250 in the ratio 3 : 6 : 1

Find the volume of a pyramid with a square base, where the perimeter of the base is 12.8 m and the height of the pyramid is 17 m. Round your answer to the nearest tenth of a cubic meter.

Over 6 days, jim jogged 6.5 miles, 5miles, 3miles, 2miles, 3.5 miles, and 4 miles. what is the mean distante that jim jogged

Alison practices multiplycation for 20 minutes and divison for 10 minutes how many problems does she practice in 15 days

Declan ran 509 meters in 5 minutes. calculate the unit rate

You are in a room with 100 light bulbs. Each light bulb is numbered from 1 to 100 and each has its own switch. All lights begin in the off position.

How do you prove 2 circles are similar?

Use two fractions to write an expression with an estimated sum of 2

The product of a number and - 5 is - 115