Solve the problem.For a hyperbolic mirror the two foci are 44 cm apart. The distance of the vertex from one focus is 7 cm and from the other focus is 37 cm. Position a coordinate system with the origin at the center of the hyperbola and with the foci on the y-axis. Find a Cartesian equation for the hyperbola.
A. 
- 
= 5
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 5
Answer: B
Mathematics
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Provide an appropriate response. How many kilograms are in 4,385 decigrams of a substance?
A. 4.385 kg B. 43.85 kg C. 0.4385 kg D. 438.5 kg
Mathematics
Solve the problem.An airplane is flying in the direction 31° east of south at 873 km/hr. Find the component form of the velocity of the airplane, assuming that the positive x-axis represents due east and the positive y-axis represents due north.
A. 
B. 
C. 
D. 
Mathematics
Find an antiderivative of the given function.e-4x/5
A. e-4x/5
B. 
e-4x/5
C. - 
e-4x/5
D. - 
e-4x/5
Mathematics
Write the expression as a logarithm of a quantity to a power. Leave answers in simplest form without negative or fractional exponents.
logc 49
A. logc 
B. 
logc 7
C. logc 49
D. logc 7
Mathematics