Evaluate the given expression.cos-1 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Write the slope-intercept form of the equation for the line passing through the given pair of points.(-5, -1) and (9, 4)
A. y = - 
x + 
B. y = 
x + 
C. y = 
x + 
D. y = - 
x + 
Mathematics
Calculate the work done by the force F along the path C.F = -4zi + 5xj + 10yk; C: r(t) = ti + tj + tk , 0 ? t ? 1
A. W = 
B. W = 11
C. W = 22
D. W = 
Mathematics
Solve the problem.The decibel level D of a sound is related to its intensity I by 
. If I0 is 10-12, then what is the intensity of a noise measured at 93 decibels? Express your answer in scientific notation, rounding to three significant digits, if necessary.
A. 1.09 × 1016 watt/m2 B. 2 × 10-3 watt/m2 C. 2 × 10-2 watt/m2 D. 9.3 × 10-10 watt/m2
Mathematics
Graph the inequality.x ? 2 
A. 
B. 
C. 
D. 
Mathematics