Assume x and y are functions of t. Evaluate dy/dt.x3 + y3 = 9; dx/dt = -3, x = 1, y = 2
A. - 
B. - 
C. 
D. 
Answer: C
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Find an equation of a parabola satisfying the given conditions.Focus at (
, 0), directrix x = - 
A. y2 = 4
x
B. y2 = 4
y
C. x2 = 4
x
D. y2 = 24x
Solve the problem.Dombro Construction Company needs to cut an arch for the top of a doorway. The arch needs to be 10 feet wide and 2 feet high. The arch will be a section of a circle, drawn using a stretched string with a pencil attached at the end as a compass. Using the coordinate system as shown in the drawing, find the y-coordinate of the point on the y-axis that would be the center of the circle. Round to the hundredths place.
?a = 5
A. 5.83 B. 52.5 C. 4.57 D. -5.25
Use the compound interest formulas A = P
nt and A = Pert to solve.Find the accumulated value of an investment of $13,000 at 4% compounded semiannually for 9 years.
A. $18,567.20 B. $15,536.20 C. $17,680.00 D. $18,503.05
Provide an appropriate response.If you were told to solve a quadratic equation by completing the square, what mechanical or algebraic difficulties could you encounter?
What will be an ideal response?