Answer the question(s) based on the following situation: A dishonest coin (landing heads 
of the time) is tossed 1350 times. The random variable X denotes the total number of heads that come up in the 1350 tosses.The standard deviation ? of this approximately normal distribution X is approximately
A. 18.37.
B. 20.
C. 18.
D. 18.63.
E. none of these
Answer: C
Mathematics
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A. Yes B. No
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State the power and constant of variation for the function, and then analyze it.f(x) = -7x4
What will be an ideal response?
Mathematics
Use the rules of exponents to simplify. Write the answer with positive exponents. Assume that all variables represent positive values.
A. 2v2
B. 16v7
C. 
D. 16v2
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Solve the equation.r2 + 9 = -6r
A. 3 B. -3, 3 C. 0, -3 D. -3
Mathematics