Which equation is not an identity?

(A.) tan (-t) = - tan t

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

(C.) sin tcot t = cos t

(D.) cos2t - sin2t = - 1

Paul owns a mobile wood-fired pizza oven operation. A couple of his clients complained about his dough at a recent catering, so he changed his dough to a newer product. Using the old dough, there were 6 complaints out of 385 pizzas.

The table shows how far Object 1 traveled as a function of time. Time (seconds) 2 4 6 8 Distance traveled (feet) 18 36 54 72 The equation shows how far Object 2 traveled in feet as a function of time in minutes.

What is the approximate volume of a right cone with a diameter of 10 meters and a height of 5 meters? Use 3.14 for π. A. 130.8 m3 B. 314 m3 C. 392.5 m3 D. 1570 m3

For this data set, the least squares regression line is Y = 31.72 + 0.62X, where X represents the final exam score as a percent, and Y represents the predicted course grade as a percent.

What is 8.517 in word form

What is: 4*4+4*4+4-4*4?

You decide to buy a 60 in plasma-screen TV. You borrow $4500 from the electronics store at 1.9% per month simple interest, with no payments due for 2 years from the date of purchase.

Find the circumference of a cercle with the radious of 5.5 in. Use 3.14 for n round the nerest tenth

What is the solution tot the system of equations graphed below Y=2x-7 Y=-x-1 A. (4,1) B. (3,-2) C. (0,-1) D. (2,-3)

Cheryl and four of her friends went hiking on Saturday. They hiked a total of 6 miles in four hours. What is the average speed that they hiked?