Use a calculator to give the real number value. Round the answer to 7 decimal places.y = tan-1(-0.7002)
A. -0.6634921
B. -0.5761905
C. -0.6108602
D. 2.5317483
Answer: C
Mathematics
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Solve the equation by first clearing the decimals.0.5x - 0.3(20 + x) = 0.1(20)
A. {40} B. {30} C. {20} D. {50}
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Multiply. Write the answer as a mixed number as needed.7
× 
A. 7
B. 6
C. 4
D. 4
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Solve the system of linear equations.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Let a?, a?, a?, . . ., an, . . . be a geometric sequence with a? = –1 and a? = 1. Find a???.
A) 1 B) –1 C) 0 D) 2
Mathematics