Brianna checks to see if the equation 2 (a + b) = 2a+ b is true. She decides that the equation is true for some values of a and b, but not for others. Match each set of values for a and b to the statement that correctly describes them.

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

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