THIS IS THE LAST QUESTION ON MY FINAL PLEASE HELP I WILL GIVE BRAINLIEST!!! Solve the following system of equations with any method.
step in the process
Show all work and explain your thinking for each
2x-10y=10
5x+9y=-9

Suppose investors can earn a return of 2% per 6 months on a treasury note with 6 months remaining until maturity. the face value of the t-bill is $10,000. what price would you expect a 6-month maturity treasury bill to sell for? (round your answer to 2 decimal places. omit the "$" sign in your response.)

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.