Simplify the expression using the appropriate identities. (Do not use calculator)

sin 9° cos 10° - cos 9º sin 10° =

Working on Summer Vacation. An Adweek/Harris (July 2011) poll found that 35% of U. S. adults do not work at all while on summer vacation. In a random sample of 10 U. S. adults, let x represent the number who do not work during summer vacation a.

Tanner plans to make 11 liters of blackberry punch and 18 liters of lemon-lime punch for the class party. He also plans to make 3 batches of cookies. One liter of punch will serve 16 students at the party.

Seneca combines 1.33 cups of apple juice with 0.65cup of grape juice to make fruit punch how much fruit punch will this make

What is the tan of 38

If a triangle has a side A that measures 8 yards and a side B that measures 4 yd, how long is side C in yards? Round to the nearest tenth.

What's the answer to 2x-4y=20? Solve the literal equation for y.

9 is subtracted from 5 times 3 and 10 is added

Evaluate the integral. (3 + 1/4 u^4 - 2/3 u^9) du

Keisha is working on a math worksheet with 50 problems. She has completed 20 problems in 25 minutes. If she continues at the same pace, what will yhe total time be for her to complete the worksheet?

8 identical pens cost £12 work out the cost of 10 of these pens