Solve the problem.Two points A and B are on opposite sides of a building. A surveyor selects a third point C to place a transit. Point C is 47 feet from point A and 65 feet from point B. The angle ACB is 45°. How far apart are points A and B?
A. 103.7 ft
B. 46 ft
C. 65.4 ft
D. 92.7 ft
Answer: B
Mathematics
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The vector r(t) is the position vector of a particle at time t. Find the angle between the velocity and the acceleration vectors at time t = 0.r(t) = e2ti + (5 + e-2t)j + (3 cos 9t)k
A. 
B. 
C. 0
D. 
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Find the derivative of y with respect to the independent variable.y = 3
A. 
B. 
3
C. 3
ln 3
D. 
3
Mathematics
Solve.Let log b A = 2.484 and log b B = 0.357. Find log b AB.
A. 2.841 B. 6.958 C. 0.887 D. 2.127
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Solve the system by graphing.
A. (4, 3) B. (4, -3) C. (1, 3) D. (-4, -3)
Mathematics