Find the focus and directrix of the parabola with the given equation.11x2 = 40y
A. Focus: 
, directrix: y = - 
B. Focus: 
, directrix: x = - 
C. Focus: 
, directrix: y = 
D. Focus: 
, directrix: y = - 
Answer: A
Mathematics
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Solve the system of equations. 3x - 4y = -3 6x + 2z = - 
2y - 4z = 4
A. No solution
B. 
C. 
D. 
Mathematics
Answer the question based on the following situation:An honest coin is tossed 1600 times. The random variable X denotes the total number of heads that come up in the 1600 tosses.What are the chances that X is between 780 and 840?
A. approximately 95% B. approximately 34% C. approximately 81.5% D. approximately 68% E. none of these
Mathematics
Change 4859 to powers of ten form with an exponent of:
a. 3 b. 2 c. 4
Mathematics
Provide an appropriate response. Factor: x2 + 14x + 48
A. (x + 6)(x + 8) B. (x - 2)(x + 24) C. (x + 4)(x + 12) D. (x - 6)(x - 8)
Mathematics