Apiggy bank contains 100 coins consisting of nickels and dimes. the total vale of the coins is $8.50
part a:
write a system of equations to be used to determine how many coins of each type does the bank have?
part b:
how many coins of each type does the bank contain?

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

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.

Just tell me how to set up the equation.