Multiply.4,000 × 1,000
A. 4,000
B. 4,000,000
C. 4,000,000,000
D. 1,000,000
Answer: B
Mathematics
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Given matrix A, find the indicated cofactor.Find A21.A = 
A. -11 B. 11 C. 2 D. -2
Mathematics
Find the coordinates of the points that are 5 units away from the origin and have a y-coordinate equal to -3.
What will be an ideal response?
Mathematics
x? = ?x + 2y, y? = 3x
Solve the first-order linear system.
Mathematics
Find the foci of the ellipse.7x2 + 2y2 + 14x - 16y + 25 = 0
A. (-1 + 
, 4) , (-1 - 
, 4)
B. (-1, 4 + 
) , (-1, 4 - 
)
C. (1, -4 + 
) , (1, -4 - 
)
D. (-1, 4 + 
) , (-1, 4 - 
)
Mathematics