Which equation is not an identity?

tan (-t) = - tan t

tan t (csc t + cot t) = sec t + 1

sin tcot t = cos t

cos2t - sin2t = - 1

Simplify the following expression: 35 + (-13) + (+8) - (-6). A. 36 B. 44 C. 50 D. 24

Alton High School sold adult and student tickets for a school play. Of the 128 tickets sold, 84 were student tickets. What percent of the total tickets sold, rounded to the nearest percent, were adult tickets?

Sugar was traditionally produced and sold as sugarloaves, which are cones of sugar wrapped in paper. Find the total surface area of a cone-shaped sugarloaf with a base diameter of 8 centimeters and a slant height of 22 centimeters.

F (x) = - 6x^3-4x^2 what is the resulting ordered pair if the value of the independent variable is 2?

Fatimah has $400 and saves $60 a week, model this equation with the slope intercept form

A polygon has an interior angle sum of 9000. How many sides does it have

Jan and Laura have a total of 3 same sized cookies they want to divide equally between the two of them. What fraction of the cookies should each girl receive?

Factor. x2+5x-14 polynomials and binomials

What number has factors of 2 and 3 and multiples of 12 and 18

Lily goes car shopping and finds two cars. The first one burns fossil fuel, gasoline, that sells for $18,000. It will cost $100 each month to buy fuel and maintain this car.