In a certain college, 33% of the physics majors belong to ethnic minorities. Find the probability of the event from a random sample of 10 students who are physics majors.Two or less belong to an ethnic minority.
A. .1990
B. .3070
C. .1080
D. .2888
Answer: B
Mathematics
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Evaluate the integral.
A. 
sin 2x - 
sin 14x+ C
B. - 
cos 14x - 
sin 14 x + C
C. 
sin 2x + 
sin 14x+ C
D. - 
cos 14x - 
cos 2x + C
Mathematics
Reparametrize the curve with respect to arc length measured from the point where t = 0 in the direction of increasing t.
r(t) = (3+3t)i+ (4+9t)j- (6t)k
Mathematics
Find an equation of the parabola described.Vertex at (0, 0); axis of symmetry the x-axis; containing the point (2, 1)
A. y2 = 
x
B. y2 = 
x
C. x2 = 
y
D. x2 = 
y
Mathematics
Provide an appropriate response.Which of the following is a reflection of the function y = [[x]] about the y-axis? Use your graphics calculator to verify your result.
A. y = -[[x + 1]] B. y = [[-x + 1]] C. y = -[[x]] D. y = [[-x]]
Mathematics