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

The rectangular prism is 17cm long by 14cm wide by 10 cm high what is the surface area

Charlotte recieves a weekly allowance from her parents. she spent half of this weeks allowance at the movies but earned an additional $4 for performing extra chores.

Carlos walked to school 14 of the 20 days in February. Which value is equivalent to the fraction of the school days in February that Carlos walked to school? a) 70% b) 0.142 c) 0.07 d) 56%

Which is the inverse of the function f (x) = 4x-9

2. Rx: Amoxil 125mg/5ml Sig: 1 tsp tid Disp: 200ml How many days will this medication last (Day supply) ? How many ml's per dose? How many total milligrams will the patient get after finishing the medication?

Julie is sewing the costumes for the school play. She needs to make fifteen bows. Each bow uses 3/4 of a yard of ribbon. Julie has 9 yards of ribbon. Does she have enough ribbon for the costumes?

How do I describe the shape of a histogram?

Jerry measured and timed the descent of a diving bell spider in a large fish tank. The spider reached a position 412 412 inches below the surface of the water after descending at a constant rate for 112 112 seconds.

The expression 5/9 (f-32) gives the temperature in degrees celsius for a given temperature in degrees fahrenheit f. find the temperature in degrees celsius that is equivalent to 86 f

The formula for the surface area of a cube is S 5 6x2 where x is the length of one side. Find the length of the side of a cube with a surface area of 150 square inches.