Find the standard-form equation for an ellipse which satisfies the given conditions.An ellipse centered at the origin having focus (0, -2
) and directrix y = - 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: A
Mathematics
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Simplify the expression. Assume all variables represent nonnegative real numbers. Write the answer in exponential form when necessary.(x-1/3y8/5)1/2
A. -x1/6y4/5
B. x1/6y4/5
C. x1/6y21/4
D. 
Mathematics
Give the quadrant containing the point in the graph. If a point is on an axis, name the axis.
A. y-axis B. QIII C. x-axis D. QII
Mathematics
The graph of a logarithmic function is shown. Select the function which matches the graph.
A. y = 1 - log (x) B. y = log (x - 1) C. y = log (x) - 1 D. y = log (1 - x)
Mathematics
Determine whether the statement is true or false.Every rational number is an integer.
A. True B. False
Mathematics