Solve the system by using the inverse of the coefficient matrix. x + y + z = 4 x - y + 4z = -195x + y + z = 24
A. No solution
B. (-5, 4, 5)
C. (-5, 5, 4)
D. (5, 4, -5)
Answer: D
Mathematics
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Solve the problem.x and y are two positive numbers and y is three greater than x. The product of the numbers is 130. Find the smaller number, x.
A. 7 B. 13 C. 10 D. 5
Mathematics
Find the center (h, k) and radius r of the circle. Graph the circle.x2 + y2 + 8x + 4y - 5 = 0 
A. (h, k) = (4, -2); r = 5
B. (h, k) = (4, 2); r = 5
C. (h, k) = (-4, -2); r = 5
D. (h, k) = (-4, 2); r = 5
Mathematics
Completely factor the polynomial.x5 + 27x2
A. x2(x3 + 27x) B. x5 (1 + 27x3) C. x2(x3 + 27) D. x2(x3 + 27x2)
Mathematics
Find the value of k for which the first polynomial is a factor of the second polynomial.x - 1; k2x3 - 3kx2 - 6kx + 18
A. k = -6 or -3 B. k = 3 or 6 C. k = -3 or 6 D. k = -6 or 3
Mathematics