The information given represents lengths of sides of a right triangle with c the hypotenuse. find the correct missing length to the nearest hundredth. a calculator may be .

a = ? , b = 13, c = 21
a 15.83
b 15.87
c 16.19
d 16.49

Which expression is equivalent to 5r6141 2r+st6

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.

Evaluate cos2θ for cosθ = square root of 3/2