Find n so that the number sentence below is true and explain your answer, referencing the relevant properties of exponents: 2^4 x 4^4 = 2^4 x 2^n = 212

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

The sum of two numbers is 86, and their difference is 20. find the two numbers

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?