Solve the logarithmic equation symbolically.7 ln x = 6

A. x = e6/7
B. x = 
C. x = 42e
D. x = e-1


Answer: A

Mathematics

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Evaluate or simplify the given expression.cos(2 cos-1 x)

A. 1 B. 2x2 - 1 C. 2x2 + 1 D. -1

Mathematics

Find the x- and y-intercepts of the graph.

A. x-intercept: 1, y-intercept: 5 B. x-intercept: 1, y-intercept: -5 C. x-intercept: 5, y-intercept: 1 D. x-intercept: -5, y-intercept: 5

Mathematics

Find all real numbers that satisfy the equation.2 cos x - 1 = 0

A. x =  + n? or x =  + n?
B. x =  + n? or x =  + n?
C. x =  + 2n? or x =  + 2n?
D. x =  + 2n? or x =  + 2n?

Mathematics

Use a graphing calculator to solve the system by finding  A-1 and  A-1B. (Round to the nearest integer if necessary.) 3x - 8y -  z = -27  x - 3y - 3z = -16-8x +  y +  z = -33

A. {(5, 5, 2)} B. {(5, 2, 5)} C. {(6, 3, 2)} D. {(5, -5, -2)}

Mathematics