Verify the identity.

sin (x + y) - sin (x - y) = 2 cos x sin y

The school fun fair made $ 1,768 on games and $978 on food sales. How much money did the fun fair make on games and food sales

Which linear equations have one solution? Check all that apply. 5x - 1 = 3 (x + 11) 4x - 2) + 4x = 8 (x - 9) 4x - 6) + 4 = 2 (x - 3) 2 (x - 4) = 5 (x - 3) + 3 2 (x-1) + 3x = 5 (x - 2) + 3

2x+5-x=3 (2*-3) solve each equation

Divide and round to the nearest hundredths place. 5.63 : 7

From the equation, find the axis of symmetry of the parabola. y = 3x2 - 12x+11 a. x = - 2 b. x = 2 c. x = 1 d. x = - 1

What is the value of y that makes the equation y+2.9=11 true?

Thomas earns x dollars each week walking his neighbor's dog. He also earns $10 allowance each week. Which expression represents the amount of money Thomas has earned after 4 weeks? Select each correct answer.

Suppose the skaters complete one lap around a park that has the shape of a regular pentagon what is the sum of the angles through which they turn

A class consists of 12 students (six boys and six girls) and one teacher. In how many ways can the students sit in a circle?

This equation shows how a sapling's height depends on its age. h = 3a The variable A represents the age of the sapling in years, and the variable h represents the height of the sapling in inches.