What is the derivative of 2sinx and 2cos2x? Find the rules in finding derivative of such functions.

The sum of two numbers is 17 and their product is 70

A rectangle has a width of 4 inches and the length of 6 inches a similar rectangular has a width of 12 inches what is the length of the similar rectangle

Twenty-nine cans were arranged on four shelves as evenly as possible. How many shelves had exactly seven cans?

What is 6 6/7 divided by 4

What is the answe to, 81^-1/4

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.