7x-3y=2 5x+4y=-17

i dont know how to solve this

3. Your school has been running a nickel drive to raise money for a sister school in Africa. A nickel weighs approximately 5 g. A roll of nickels is worth $2.00. You have collected a total of $135.65 in nickels. a.

Find the exact value of sin (x+y) when sinx=-1/4 and cosy=-3/5 in q2

Multiply. - (-9x4-5x2+2x + 13) Express the answer in standard form. Enter your answer in the box.

Paul Curcio earns $7.55 per hour for regular time up to 40 hours, time-and-a-half for overtime, and double time for working on holidays. Find his gross pay (in $) if he worked 6 holiday hours for a total of 58 hours Monday through Saturday

Which of the following represents "a number less ten is twenty-two"? a. 10-N=22 b. N-22=10 c. N-10=22

A wheel moves with an angular velocity of 16 radians per second. find the speed of the wheel if its diameter is 28 inches.

A retired couple invested $8000 in bonds. At the end of one year, they received an interest payment of $504. What was the simple interest rate of the bonds? Do NOT round off a decimal answer.

The price of a frig is marked up 25% to 406.25 what was the original price

2.4=-t/4.5 what does t equal

How can you tell the difference between a strong linear association and a weak linear association?