Give the probability distribution and sketch the histogram.The telephone company kept track of the calls for the correct time during a 24-hour period for two weeks. The results are shown in the table.

A.


B.



C.


D.



Answer: B

Mathematics

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Simplify the expression.(33)2

A. 81 B. 243 C. 729 D. 18

Mathematics

Evaluate the integral.

A. cos-1 (x + 4) + C
B.  + C
C. sin-1 (x + 4) + C
D. -sin-1 (x + 4) + C

Mathematics

Solve the problem. Express the answer in scientific notation to two decimals.The national debt of a country is $28,350,000,000 and the population is 3,150,000. What is the debt per person? Write answer without exponents.

A. $90,000 B. $900 C. $9000 D. $89,302,500

Mathematics

Perform the indicated operations. Write the result using only positive exponents. Assume all variables represent nonzero real numbers.

A. x15
B. x19
C.
D. -x15

Mathematics