A brownie recipe calls 1 2/3 cups of nuts. Ethan wants to use only half of this amount. How many cups of nuts should Ethan use?
a. 8/3 cups
b. 10/3 cups
c. 5/6 cups
d. 6/5 cups

Chanelle deposits $7,500 into the bank. she does not withdraw or deposit money for 6 years. she earns 6% interest during that time. what will the balance be when she is finally able to withdraw her money?

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.