Solve.An arch in the shape of the upper half of an ellipse is used to support a bridge spanning a creek 36 feet wide. The center of the arch is 9 feet above the center of the creek. Write the equation for the ellipse in which the x-axis coincides with the road and the y-axis passes through the center of the arch.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: C
You might also like to view...
Perform the indicated operations. Write the result in the form a + bj.
A. 
B. - 
C. 
D. - 
Use the change of base formula and a calculator to approximate the logarithmic expression. Round your answer to four decimal places.log1642.7
A. 0.4263 B. 2.8345 C. 1.3540 D. 0.7385
Create the requested display.The diastolic blood pressures, in mm Hg, for a sample of 20 patients at a clinic are listed: 78, 87, 85, 102, 110, 94, 85, 95, 106, 92, 79, 96, 88, 89, 88, 95, 78, 87, 92, 83Create a stem-and-leaf display.
What will be an ideal response?
Solve the problem.The number of VHS movie rentals has declined since the year 2000 due to the popularity of DVDs, as the following table shows. Make a scatterplot of the data and determine if the data would be better modeled by a linear model or by an exponential model.
A. Linear
B. Exponential
C. Linear
D. Exponential