Solve the system using Gaussian elimination. 4x + y = 8 9x + 5y = 7
A. ?
B. {(-4, 3)}
C. {(3, -4)}
D. {(-4, -3)}
Answer: C
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Solve the problem.A plane is heading due south with an airspeed of 234 mph. A wind from a direction of 54.0° is blowing at 17.0 mph. Find the bearing of the plane. (Note that bearings are measured from north, clockwise.) Round results to an appropriate number of significant digits.
A. 183° B. 178° C. 87° D. 92°
Provide an appropriate response.
= ? (percent)
A. 0.66
%
B. 0.66%
C. 0.066
%
D. 66
%
E. none of the above
The top of a ladder slides down a vertical wall at a rate of 0.15 m/s . At the moment when the bottom of the ladder is 1.5 m from the wall, it slides away from the wall at a rate of 0.3 m/s. How long is the ladder?
a. 3.9 m b. 2.9 m c. 4.4 m d. 3.4 m e. 2.4 m
Solve the application.A rectangular projector screen has a length of 4
feet and a width of 1
feet. What is the area of the screen?
A. 40 ft2
B. 5
ft2
C. 1
ft2
D. 5
ft2