Solve the nonlinear system of equations.y = 8
- 16y = x2
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.A 2,000-L tank is initially filled with a copper sulfate solution with a concentration of 50 g/L. A copper sulfate solution with a concentration of 20 g/L flows into the tank at a rate of 8 L/min. The thoroughly mixed solution is drained from the tank at a rate of 8 L/min.(a) Write an initial value problem for the mass of the copper sulfate.(b) Solve the initial value problem.
A. (a) m'(t) = 0.004m + 160, m(0) = 50 (b) m = -39,950e0.004t + 320,000 B. (a) m'(t) = -0.004m + 20, m(0) = 50 (b) m = -39,950e-0.004t + 40,000 C. (a) m'(t) = -250m + 160, m(0) = 100,000 (b) m = 60,000e-0.004t + 320,000 D. (a) m'(t) = -0.004m + 160, m(0) = 100,000 (b) m = 60,000e-0.004t + 40,000
Find all solutions to the equation. Express the solution in degrees.tan x = 1
A. 90° + 180°n B. 45° + 180°n C. 135° + 180°n D. 45° + 360°n
Decide whether the statement is true or false.log712 - log127 = 0
A. True B. False
Multiply.× 
A. 156.86 B. 156.750 C. 156.85 D. 156.861