Divide where possible.
A. 
B. 25
C. -25
D. 15
Answer: B
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Provide an appropriate response.The region shown here is to be revolved about the x-axis to generate a solid. Which of the methods (disk, washer, shell) could you use to find the volume of the solid? How many integrals would be required in each case? x = - y2 
What will be an ideal response?
Solve the equations containing absolute value. 
= -5
A. 
B. 
C. 
D. ?
Velocities have both direction and magnitude and thus are vectors. The magnitude of a velocity vector is called speed. Suppose that a wind is blowing from the direction N 60° W at a speed of 80 km/h. (This means that the direction from which the wind blows is 60° west of the northerly direction.) A pilot is steering a plane in the direction N 45° E at an airspeed (speed in still air) of 250 km/h. The true course, or track, of the plane is the direction of the resultant of the velocity vectors of the plane and the wind. The ground speed of the plane is the magnitude of the resultant. Find the ground speed of the plane. Round the result to the nearest hundredth.
What will be an ideal response?
Rationalize the denominator.
A. 1
B. 
C. 
D. 