Use a calculator to solve the equation on the interval [0, 2?). Round to the nearest hundredth of a radian.cos 3x = - cos x
A. 0.79, 1.57, 2.36, 3.93, 4.71, 5.50
B. 0, 1.57, 3.14, 4.71
C. 1.57, 4.71
D. 0, 0.79, 2.36, 3.14, 3.93, 5.50
Answer: A
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Find the slope of the curve for the given value of x.y = x2 + 5x, x = 4
A. slope is 
B. slope is 13
C. slope is - 
D. slope is -39
Use common logarithms or natural logarithms and a calculator to evaluate to four decimal placeslog2066.6
A. 1.4016 B. 0.5224 C. 0.7135 D. 3.1245
Find the sign of the six trigonometric function values for the given angle.-163°
A. Positive: cosine and secant; negative: sine, tangent, cotangent, cosecant B. Positive: tangent and cotangent; negative: sine, cosine, secant, cosecant C. Negative: all D. Positive: sine and cosecant; negative: cosine, tangent, cotangent, secant
For the transition matrix, find the probability that state 2 changes to state 4 after 5 repetitions of the experiment.
A. 0.11078 B. 0.23198 C. 0.00032 D. none of these