Solve the problem.An object is traveling around a circle with a radius of 20 meters. If in 10 seconds a central angle of  radian is swept out, what is the linear speed of the object?

A.  m/sec
B.  m/sec
C.  m/sec
D.  m/sec


Answer: C

Mathematics

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Given y = f(u) and u = g(x), find dy/dx = f'(g(x))g'(x).y = , u = 4x - 7

A.
B. - 
C. - 
D. - 

Mathematics

Identify the number as prime, composite, or neither.2311

A. Neither B. Composite C. Prime

Mathematics

Describe the transformations required to obtain the graph of the function f(x) from the graph of the function g(x).f(x) = -2 cos 7x ; g(x) = cos x

A. Horizontal shrink by a factor , vertical stretch by a factor of 2, reflection across x-axis
B. Horizontal shrink by a factor , vertical stretch by a factor of 2, reflection across y-axis
C. Horizontal shrink by a factor , vertical stretch by a factor of 7, reflection across y-axis
D. Horizontal stretch by a factor 7, vertical stretch by a factor of 2, reflection across x-axis

Mathematics

A geometric sequence is given. Find the common ratio and write out the first four terms.

A. an = 2 n-1
r = ; 2, , ...
B. an = 2 n-1
r = ; 2, 1, , ...
C. an =  (2)n-1
r = ; 2, 4, 8, 16, ...
D. an = 2 ? (2)n-1
r = 2; 2, 4, 8, 16, ...

Mathematics