What is standard deviation

A basketball player makes 3 out of 5 free throws. What is his shooting percentage?

Write 12345678 times 10^-9 as a decimal.

Recall that a 6-bit string is a bit strings of length 6, and a bit string of weight 3, say, is one with exactly three 1's.

kayla has a T shirt store. she sold three times as many white T shirts as blue T shirts, she sold a total of 48 T shirts. how many white T shirts did kaylal sell

Is 24 a factor or a multiple 48

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.