Sam invested $7000, some at 7.2% interest and the rest at 9.2%. How much did he invest at each rate if he received $560.00 in interest in one year? Investment at 7.2% account = $

Investment in 9.2% account = $

The contents of 3838 cans of coke have a mean of x¯¯¯=12.15x¯=12.15. assume the contents of cans of coke have a normal distribution with standard deviation of σ=0.12.σ=0.12. find the value of the test statistic zz for the claim that the population mean is μ=12.μ=12.

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

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