What would be the best unit to measure a river?

A consumer activist group wants to determine the mean lifetime of the Amazon Kindle DX. The consumer activist groups randomly selects 25 Kindles and finds that the average lifespan was 38 months with standard deviation 12 months.

Sector 2 in a spinner is 90°. If it is spun twice, what is the probability bit will land in sector 2 both times?

Find the product. (a 2 b 3) 4

A triangle has side lengths of 3 feet and 9 feet. which is the greatest possible perimeter of the triangle

Jauanita and Keenan own a camping supply store and just put in an order fir flashlights and sleeping bags. The number of flashlights ordered was five times the number of sleeping bags.

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.