Solve.If y varies inversely as the square root of x, and y = 20 when 
find y when 
A. 
B. 45
C. 
D. 
Answer: B
Mathematics
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Find the polar coordinates, 
and 
, of the point given in Cartesian coordinates.
A. 
B. 
C. 
D. 
Mathematics
Find the exact value of the trigonometric expression without the use of a calculator.cos 
A. - 
B. 
(
- 1)
C. 
D. -
(
- 1)
Mathematics
Use transformations of the graphs of y = x2 or y = |x| to sketch a graph of f by hand.f(x) = 2
- 6
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.The probability distribution for the random variable X is: 
What is the expected value of X?
A. 0.62 B. 0.26 C. 0.22 D. 0.50
Mathematics