Divide the product of 10 and 8 by the difference of 12 and 2

What is the square root of 45? (step by step working plz)

Which statements regarding the diagram are true? check all that apply.

A) if $50000 is invested in a bank account that pays 9.3% of interest compounded on a six-monthly basis, how much money will be in the account after 3 and 12 years? b) if matusalen's father had put $2.0 in the bank when he was born and there, how long would matusalen have had to his death (969 years later) if the interest was 7% per year composed each month and weekly?