Find the LCM of the set of numbers.15, 20, 30, 40
A. 108
B. 90
C. 120
D. 60
Answer: C
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Use the basic trigonometric identities and the given information to find the exact values of the remaining trigonometric functions.cot ? = - 
and 90° < ? < 180°
A. sin ? = 
cos ? = - 
tan ? = - 
csc ? = 
sec ? = - 
cot ? = - 
B. sin ? = - 
cos ? = 
tan ? = - 
csc ? = - 
sec ? = 
cot ? = - 
C. sin ? = - 
cos ? = 
tan ? = - 
csc ? = - 
sec ? = 
cot ? = - 
D. sin ? = 
cos ? = - 
tan ? = - 
csc ? = 
sec ? = - 
cot ? = - 
Sketch a typical level surface for the function.f(x, y, z) = cos (x2 + y2 + z2)
A. 
B. 
C. 
D. 
Solve the problem.At one college, GPAs are normally distributed with a mean of 2.6 and a standard deviation of 0.6. What percentage of students at the college have a GPA below 3.2?
A. 68% B. 84% C. 16% D. 95%
Find the y-intercept of the polynomial function.f(x) = 9x - x3
A. -9 B. 0 C. 9 D. -1