Find the exact value of y, or state that y is undefined.y = cos-1 

A.
B. - 
C.
D.


Answer: C

Mathematics

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Choose the appropriate response. Perpendicular lines .

A. always intersect at a 45° angle B. have slopes that are negative reciprocals of each other C. have opposite slopes D. have the same slope

Mathematics

Divide.(p2 + 5p - 20) ÷ (p + 8)

A. p - 3 + 
B. p - 3
C. p - 4 + 
D. p + 3 + 

Mathematics

Write the expression in standard form.4.47 × 104

A. 178.8 B. 447,000 C. 4470 D. 44,700

Mathematics

For the function f, use composition of functions to show that f-1 is as given.,  

What will be an ideal response?

Mathematics