Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with vertices (±8, 0) and foci at (±3, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: A
Mathematics
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Apply the distributive law.8(9x - 2)
A. 17x - 10 B. 88x C. 72x - 16 D. 72x - 2
Mathematics
Solve the problem.A projectile is fired with an initial velocity of 450 feet per second at an angle of 70° with the horizontal. In how many seconds will the projectile reach its maximum altitude? (Round your answer to the nearest tenth of a second.)
A. 21.3 seconds B. 13.2 seconds C. 9.8 seconds D. 18 seconds
Mathematics
Rewrite the expression as a single logarithm and simplify the result.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Factor completely.4x2 - 25
A. prime B. (2x + 5)2 C. (2x - 5)2 D. (2x + 5)(2x - 5)
Mathematics