an adult blinks about 450 times in 30 minutes and a 12 year old blinks about 150 times in 15 minutes. how many more times does an adult blink in 60 minutes than a 12 year old?

A surveyor flips through the phone book and selects 30 names. a. systematic c. stratified b. random

The Math Club purchased chocolate bars for $0.60 each and plans to sell them for $1.20 each. Fifteen percent of the profit (the difference between the selling price and the purchase price) from the candy sales will go toward new club shirts.

A rectangle is 5 meters longer than its width. If the length is shortened by 2 meters and width is increased by 1 meter, the area remains the same. Find the area of the rectanel g. The ratio of two numbers is 2:5.

Multiply binomails (x + 2) (3x+1)

Delivery truck is transporting boxes of 2 sizes:large boxes weigh 60 pounds each, and the small boxes weigh 30 pounds each. There are 125 boxes in all. If the truck is carrying a total of 5700 pounds in boxes.

Simplify | 4-9 | A) 13 B) 5 C) - 5 D) - 13

Plastic cups come in packages of twenty-four and straws come in packages of twenty. What's the smallest number of each that could be bought so that you had the same amount of cups and straws?

What is 12+2-8=6-12 = - 6 + 18

A ramp leading into a building makes a 15 degree angle with the ground. The end of the ramp is 10 feet from the base of the building. Approximately how long is the ramp? Round to the nearest tenth.

What is 7 hunderedths in simpilest form?