I have 10 apples i give away 4 how many do i have now

Ineed if you could explain and give me the answer you! this needs done

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?

Twelve different video games showing substance use were observed and the duration times of game play (in seconds) are listed below. the design of the study justifies the assumption that the sample can be treated as a simple random sample. use the data to construct a 99% confidence interval estimate of μ, the mean duration of game play. 4028 4316 4816 4650 4036 5010 4833 4331 4307