Write the expression as the sine, cosine, or tangent of an angle.

sin 9x cos x - cos 9x sin x

A pizza is $6.98. how much is the pizza, with a 50% off discount?

Does anybody know the answer to this probelm (3z 5 + 7z 2) 2

A triangular plot of land has one side along a straight road measuring 294 feet. a second side makes a 63degrees angle with the road, and the third side makes a 56degrees angle with the road. how long are the other two sides?

Jenna Lynda 4 3/10 from school. she estimates that she travels 40 miles each week. is her estimates an overestimate our an underestimate? explain.

If two lines are perpendicular and they intersect at an angle that measures 5x - 12, what is the value of x?

Martha changed 350 US dollars into 385 Australian dollars. How many Australian dollars did she receive for each US dollar?

The temperature at 9am was 13.6 deg. Celsius. The temperature at 9pm was 6.4 deg. Celsius. What was the average drop in temperature from 9am to 9pm

In the diagram, a building casts a 21-ft shadow and a flagpole casts a 6-ft shadow. If the flagpole is 15 ft tall, how high is the building?

jacinta says that the product of a positive and negative rational number is always irrational. explain her error.

Denny lives in Maryland and pay 6% in sales tax. He just bought $145 in groceries, but $70 worth of those groceries were non taxable. What is the total amount that Denny paid for the groceries, including the sales tax?