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 mean ? of this approximately normal distribution X is approximately
A. 540.
B. 23.2.
C. 675.
D. 810.
E. none of these
Answer: A
Mathematics
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Find the zeros of the function. Give exact answers.f(x) = 5x2 - x + 3
A. - 
, 
B. 
± 
i
C. 1 ± 
D. 
± 
i
Mathematics
Graph the function and determine if it has a point of discontinuity at x = 0. If there is a discontinuity, tell whether it is removable or non-removable.f(x) = 
A. 
Yes; removable
B. 
No
C. 
No
D. 
Yes; non-removable
Mathematics
Write the vector u as a sum of two orthogonal vectors, one of which is the vector projection of u onto v, projvu .u = 
, v = 
A. 
+ 
B. 
+ 
C. 
+ 
D. 
+ 
Mathematics
Simplify the expression.
A. 11.314 B. -8 C. 22.627 D. not a real number
Mathematics