Apile of 55 coins consisting of nickels and dimes is $3.90. find the number of each.

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

What is the frequency of the sinusoidal graph?

Solve the triangle. a = 21°, c = 105°, c = 5