Solve the system.2w - 6y + z = -26-w + 2x + y - 2z = 42w - x + + 6z = -5 x - 2y - z = -9
A. (-1, 3, 7, -3)
B. (3, -1, 5, -2)
C. (2, 1, -5, 0)
D. (1, -1, -7, -2)
Answer: B
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Solve the problem.A water tank is formed by revolving the curve y = 6x4 about the y-axis. Find the volume of water in the tank as a function of the water depth, y.
A. V(y) = 
y3/2
B. V(y) = 
y3/2
C. V(y) = 
y1/2
D. V(y) = 
y9
Determine if the equation is an identity.cos (A + B) + cos (A - B) = 2 sin A sin B
A. Yes B. No
Find the quotient.(x3 + 125) ÷ (x + 5)
A. x2 - 5x + 25 B. x2 - 25x + 5 C. x2 + 25 D. x2 - 5
Provide an appropriate response.Finish the statement with a correct response. To divide two fractions one needs to:
A. Use the reciprocal of the second fraction (divisor), add the numerators and multiply the denominators. B. Use the reciprocal of the second fraction (divisor) and multiply. C. Add the numerators and multiply the denominators. D. Add the numerators and factor the denominators.