Simplify.
A. 
B. 
C. 2
D. 
Answer: D
Mathematics
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Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with x-intercepts ±6; foci at (-3, 0) and (3, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Perform the indicated operation. Simplify the result if possible.2 ft 10 in. + 14 ft 6 in.
A. 16 ft 4 in. B. 17 ft 4 in. C. 16 ft 6 in. D. 17 ft 6 in.
Mathematics
Evaluate the expression for the given value of the variable.z2 + 5z + 7 for z = -3
A. 17 B. 1 C. -13 D. 31
Mathematics
Use the distributive property to multiply. Then, if possible, simplify the resulting expression.3(7 + m)
A. 21m B. 21 + m C. 21 + 7m D. 21 + 3m
Mathematics