Determine the center and the radius of the circle.(x + 7)2 + (y + 4)2 = 4
A. (-4, -7), r = 2
B. (7, 4), r = 4
C. (4, 7), r = 4
D. (-7, -4), r = 2
Answer: D
Mathematics
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Solve the system using matrices. 9x - 8y + 4z = -19-27x + 24y - 12z = 57 18x - 16y + 8z = -38
A. (-3, 1, 5) B. No solution C. (-3, -3, -4) D. Infinitely many solutions
Mathematics
Find the flux of the curl of field F through the shell S.F = 5yi + 8zj - 4xk; S: r(r, ?) = r cos ?i + r sin ?j + (16 - r2)k, 0 ? r ? 4 and 0 ? ? ? 2?
A. -80 B. -80? C. 80? D. -20?
Mathematics
Subtract.79
A. 34 B. 44 C. 114 D. 104
Mathematics
Find an equation for the line that passes through the given point and satisfies the given conditions.P = (-5, 7); perpendicular to v = -2i - 6j
A. -2x - 6y = 40
B. y - 7 = - 
(x + 2)
C. -6x + 2y = 44
D. -2x - 6y = -32
Mathematics