Angles that are exactly 90°. What shape has all right angles ? a) a b) c)​

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.

Why is it so easy to buy on impulse and overspend with a credit card? what could you do to counteract this tendency?

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