Hi, will someone me?
simplify square root of 3 times square root of 21.

square root of 24
square root of 63
3 square root of 7
none of the above

if you !

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years

Question 1 of 10 2 points different groups of 50 graduates of an engineering school were asked the starting annual salary for their first engineering job after graduation, and the sampling variability was low. if the average salary of one of the groups was $65,000, which of these is least likely to be the average salary of another of the groups? o a. $64,000 o b. $65,000 o c. $67,000 o d. $54,000

Marcos works the summer while in college and earns $6,000 working on oil rigs. he files his own return, does not take the personal exemption but claims the standard deduction. how much would he pay in income tax?