Solve the problem.If sin ? = 
, ? in quadrant II, find the exact value of sin
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find the length of the indicated portion of the curve.r(t) = (2cos t)i + (2sin t)j + 3tk, 0 ? t ? ?/2
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
Add the polynomials.(7y4 - 9y2) + (4y4 - 8y2)
A. -6y6 B. 11y4 - 17y2 C. -6y12 D. 11y8 - 17y4
Mathematics
Graph. Label any intercepts and determine the slope of the line. If the slope is undefined, state this.x = -7
A. x-intercept: (-7, 0), m: - 
B. x-intercept: (0, -7), m: 0
C. x-intercept: (0, 0), m: -7
D. x-intercept: (-7, 0), m: undefined
Mathematics