Solve the equation.
= - 
A. - 
B. - 
C. 
D. 
Answer: C
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Find the center, foci, and vertices of the ellipse.
+ 
= 1
A. center at (0, 0)
foci at (0, -4) and (0, 4)
vertices at (0, -16), (0, 16)
B. center at (0, 0)
foci at (- 2
, 0) and (2
, 0)
vertices at (-4, 0), (4, 0)
C. center at (0, 0)
foci at (0, 4) and (2, 0)
vertices at (0, 16), (4, 0)
D. center at (0, 0)
foci at (0, - 2
) and (0, 2
)
vertices at (0, -4), (0, 4)
Write the inequality in interval notation.-3 ? x ? 1
A. [-3, 1] B. (-3, 1) C. (-3, 1] D. [-3, 1)
If possible, solve each system by an algebraic method (substitution or addition method). Otherwise, state that the problem has no solution or an infinite number of solutions.4x + y = 1112x + 3y = 33
A. (5, -9) B. (0, 11) C. Infinite number of solutions D. No solution
Solve the problem.How many different license plates can be made using 2 letters followed by 5 digits selected from the digits 0 through 9, if neither letters nor digits may be repeated?
A. 9,828,000 B. 19,656,000 C. 81,900 D. 67,600,000