On his birthday newton was 14 years old and his father was 41 newton noticed that his age was his fathers age with the digits reversed how many years later with their ages next have their digits reversed

4. The mean of 12 numbers is 5.5. Eleven of the numbers are 5, 6,5,3,4,5,7,6,9, 7 and 5. Find a) the twelfth number. b) the mode of the twelve numbers. c) the sum of the mode and the mean.

Fine the probability of not rolling factor of 4 on both dice

If Sara works for 7.25 an hour and works from 4-8 for a week what is her total amount for that week (week as in a whole 7days)

Hey guys, I know the answer to this problem, but I'm having some trouble understanding it. If you could explain it to me, that would be great.

You randomly select one card from a 52-card deck. Find the probability of selecting a black six or a black eight. The probability is

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.