Which equation matches the given calculator-generated graph and description? Decide without using your calculator.
Parabola; opens left
A. y = -x2
B. y = x2
C. x = -y2
D. x = y2
Answer: C
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Show that the function is a solution of the wave equation.w(x, t) = sin (10x + 10ct)
A. No B. Yes
Solve the problem.A tank is designed by revolving the parabola y = 4x2, 0 ? x ? 2, about the y-axis. The tank, with dimensions in meters, is filled with water weighing How much work will it take to empty the tank by pumping the water to the tank's top? Give your answer to the nearest J.
A. 15,763,255 J B. 1,313,605 J C. 5,254,418 J D. 164,201 J
Use the division method to find the GCF of the pair of numbers. If the GCF is 1, write "relatively prime."24 and 6
A. relatively prime B. 24 C. 4 D. 6
Determine whether the matrix is in row-echelon form. If it is, then determine also whether it is in reduced row-echelon form.
A. Yes; yes B. Yes; no C. No