Use a calculator to give the real number value. Round the answer to 7 decimal places.y = cos-1(0.8910)

A. 0.4365083
B. 1.1000010
C. 0.4712533
D. 0.5063492

Answer: C

Mathematics

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Solve. Check for extraneous solutions. +  = -1

A.
B. {1}
C. {0}
D. ?

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Mathematics

Find a Cartesian equation for the line whose polar equation is given.r cos = 4

A. y = 8 - x
B. y = x + 4
C. y = 8 - x
D. y = 4 - x

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Mathematics

Solve.Find two numbers whose product is 20 and the sum of whose reciprocals is 

A. 100 and 
B. 80 and 
C. 400 and 
D. 5 and 4

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Mathematics

Determine whether there is a maximum or minimum value for the given function, and find that value.f(x) = x2 - 10x + 29

A. Minimum: 4 B. Maximum: -4 C. Maximum: 5 D. Minimum: 0

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Mathematics