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

sin 9x cos x - cos 9x sin x

Parentheses Evaluate the expression {10 7} + (10 - 6).

Kia and Leo are selling cookies at a bake sale. If they both sell all their cookies, who will make more money?

Let x represent the measurment of an acute angle in degrees. the ratio of the complement of x to the supplement of x is 2: 5. guess and check to determine the value of x. explain why your answer is correct.

Prove whether or not 169 is a perfect square.

Julius bought 3 games on sale. the original price of each game was "d" dollars. the expression 3 (d - 0.2d) shows the total amount julius paid. which expression is equivalent to this?

A boat leaves a dock at 2:00 pm and travels due south at a speed of 20 km/h. another boat has been heading due east at 15 km/h and reaches the same dock at 3:00 pm how many minutes after 2:00 pm were the two boats closest together?

denise constructs a triangle with angles measuring 64o and 32o. what would the third angle measurement be

Which of the following are solutions to the equation below? x^2-6x+40=6x+5

Malcolm is driving 1,323 miles from Wichita to Charleston for a family reunion. He drives 443 miles the first day and 409 miles the second day. Round each distance to the nearest ten and estimate about how many miles Malcolm has left to drive.

What's an example of an integer word problem in addition?