if ∠2=(4+5)° and ∠4=(2−27)°, solve for x.

For each expression use a property to write an equivalent expression.

Solve the system of equations. y= 2x y= x^2 - 15

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?