Find both (a) the LCM and (b) the GCF of the numbers.21 and 15

A. (a) 3
(b) 105
B. (a) 105
(b) 3
C. (a) 105
(b) 105
D. (a) 315
(b) 3


Answer: B

Mathematics

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Use a half-angle identity to find an exact value for the following, given the information about x. Find tan , given that cos x = -  and x terminates in 180° < x < 270°.

A. - 
B.
C. - 
D.

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Solve the problem.Edwardo wants to make a walk out of paving brick. He has enough bricks to pave 26 square yards. How long can the walk be if it is 4 feet wide? (3 feet = 1 yard)

A. 6 yards
B. 8 yards
C. 19 yards
D. 34 yards

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Find the compound amount for the certificate of deposit. Assume daily compounding using the following table. Round to the nearest cent.Amount: $4289Rate: 4%Years: 4

A. $6398.30 B. $5238.52 C. $5507.09 D. $5033.14

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Perform the indicated operation. Write the answer without exponents.

A. 4000 B. 40,000 C. 400 D. 40,000,000

Mathematics