Solve the problem.A pick-up truck is fitted with new tires which have a diameter of 42 inches. How fast will the pick-up truck be moving when the wheels are rotating at 400 revolutions per minute? Express the answer in miles per hour rounded to the nearest whole number.
A. 50 mph
B. 8 mph
C. 25 mph
D. 42 mph
Answer: A
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Expand using the binomial theorem.(4x + y)3
A. 64x3 + 32x2y + 8xy2 + y3 B. 64x3 + 32x2 + 8y2 + y3 C. 64x3 + 48x2y + 12xy2 + y3 D. 64x3 + 48x2 + 12y2 + y3
Eliminate the parameter to find a description of the circle or circular arc in terms of x and y.x = 2 cos t, y = 2 sin t; -? ? t ? ?
A. x2 + y2 = 2; The curve is a circle with center (0, 0) and radius 2; the curve begins at (-4, 0) and is oriented counterclockwise, ending at (-4, 0). B. x2 + y2 = 4; The curve is a circle with center (0, 0) and 2 in Quadrants III and IV; the circular arc begins at (-2, 0) and is oriented counterclockwise, ending at (2, 0). C. x2 + y2 = 4; The curve is a circle with center (0, 0) and radius 2; the curve begins at (-4, 0) and is oriented counterclockwise, ending at (-4, 0). D. x2 + y2 = 4; The curve is a circle with center (0, 0) and radius 2; the curve begins at (-4, 0) and is oriented clockwise, ending at (-4, 0).
Solve the matrix equation for X.A = 
, B = 
, AX = B
A. 
B. 
C. 
D. 
Solve the equation.Let f(x) = 
+ 8. Find all x for which f(x) = 16.
A. ? B. {-8, 8} C. {-24, 24} D. {-8, 24}