Find the exact value of the expression using a sum or difference identity.sin 165°

A.
B.
C.
D.


Answer: B

Mathematics

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Use the given data to construct a frequency and relative frequency distribution.Kevin asked some of his friends how many hours they had worked during the previous week at their after-school jobs. The results are shown below.6?5?6?3?6?6?9?8?6?4?8?55?8?6?5?8?6?5?8?5?8?8?3Construct a frequency and relative frequency distribution. Use 4 classes.

A.  

B.
 
C.
  
D.
 

Mathematics

Graph the function. Show at least one period.y = 2 cos

A.

B.

C.

D.

Mathematics

Solve the problem. Express your answer in scientific notation, rounding as needed.Assume that the volume of the earth is 5 × 1014 cubic meters and the volume of a bacterium is  cubic meters. If the earth could be filled with bacteria, how many would it contain?

A. 2.0 × 10-30 bacteria B. 5.0 × 1031 bacteria C. 5.0 × 10-31 bacteria D. 2.0 × 1030 bacteria

Mathematics

Solve the problem.How many times more intense is an earthquake that measures 8.14 on the Richter scale than the minimum level for comparison? Round answer to the nearest integer.

A. 138,038,426 B. 814 C. 81 D. 8

Mathematics