If half a number is 5, what is the whole number

The difference of x and a number is 8. What is the other number?

2.5 h = [?] minutes.

Carlos is five years older than twice his sister's age. Carlos is 13. Which equation and solution correctly identifies his sister's age? A.) 2 x + 5 = 13; x = 4 B.) 2 x - 5 = 13; x = 9 C.) 2 x - 5 = 13; x = 4 D.

Kelly took 25 tests in 135 days. At this rate, how many more days will it take for her to complete another 10 tests? Create a table to justify your reasoning?

Tell me every single digit in pie

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.