Find the standard equation of the parabola with the given focus and directrix.Focus: (0, -5); directrix: y = -3
A. y2 = -4(x + 4)
B. x2 = 4(y + 4)
C. y2 = 4(x + 4)
D. x2 = -4(y + 4)
Answer: D
Mathematics
You might also like to view...
Factor out the greatest common factor.80x9y9 - 128x3y4 - 128x7y2
A. 16x3(5x6y9 - 8y4 - 8x4y2) B. 16(5x9y9 - 8x3y4 - 8x7y2) C. 16x3y2(5x6y7 - 8y2 - 8x4) D. No common factor (except 1)
Mathematics
The sequence is defined recursively. Write the first four terms.a1 = 4 and an = 4an-1 - 2 for n ? 2
A. 4, 16, 64, 256 B. 4, 14, 62, 254 C. 4, 18, 74, 298 D. 4, 14, 54, 214
Mathematics
Establish the identity.
= 
What will be an ideal response?
Mathematics
Find the simple interest. Assume a 360-day year. Round results to the nearest cent.$19,760 at 2.75% for 66 days
A. $19,859.62 B. $543.40 C. $99.62 D. $98.11
Mathematics