Graph the ellipse and locate the foci.
+ 
= 1
A. foci at (5, 0) and (-5, 0)
B. foci at (
, 0) and (-
, 0)
C. foci at (0, 
) and (0, -
)
D. foci at (4, 0) and (-4, 0)
Answer: C
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A PDF for a continuous random variable X is given. Use the PDF to find the indicated probability.Find P(X ? 3).f(x) = 
A. 0.0498 B. -0.0498 C. 0.9502 D. -0.9502
Evaluate the function for the given values of a and b. Then use the intermediate value theorem to determine which of the statements below is true.a = -2 and b = -1f(x) = 3x5 - 9x3 - 9x2 + 5
A. f(-2 ) and f(-1) have opposite signs, therefore the function f does not have a real zero between -2 and -1. B. f(-2 ) and f(-1) have the same sign, therefore the function f has a real zero between -2 and -1. C. f(-2 ) and f(-1) have the same sign, therefore the intermediate value theorem cannot be used to determine whether f has a real zero between -2 and -1. D. f(-2 ) and f(-1) have opposite signs, therefore the function f has a real zero between -2 and -1.
+ 1
A. 
B. - 
C. - 
D. 
Tell which set or sets each number belongs to: natural, whole, integer, rational, irrational, real.8.06
A. Rational B. Natural, rational, real C. Real D. Rational, real