Factor completely.16x2 + 25
A. Prime
B. (4x - 5)2
C. (4x + 5)(4x - 5)
D. (4x + 5)2
Answer: A
Mathematics
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Find the equation of the ellipse satisfying the given conditions. The center is at the origin.Sum of lengths of major and minor axes 16, focus (0, 4)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Determine whether the proportion is true or false.
= 
A. True B. False
Mathematics
Solve the problem.
In a school survey, students showed these preferences for instructional materials.About how many students would you expect to prefer computers in a school of 800 students?
A. About 160 students B. About 144 students C. About 288 students D. About 36 students
Mathematics
Solve the system by elimination.-4x - 5y = 212x + 15y = 6
A. {(x, y)|-4x - 5y = 2} B. ? C. {(-8, -10)} D. {(8, 10)}
Mathematics