X is Normal(2.7, 0.3).
Find E ( X ), Var ( X ), and SD( X ) for the given random variable.
2.7, 0.09, 0.3
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Divide numerator and denominator by the highest power of x in the denominator to find the limit.
A. 10 B. 100 C. does not exist D. 1,000
Write the number in scientific notation. One milligram is about 0.015430 grain.
A. 0.1543 × 10-1 B. 15.43 × 10-3 C. 1.543 × 10-2 D. 1.543 × 10-3 E. 0.015430 × 10-2
Solve the problem.Find a field G = P(x, y)i + Q(x, y)j in the xy-plane with the property that at any point (a, b) ? (0, 0), G is a vector of magnitude 
tangent to the circle x2 + y2 = a2 + b2 and pointing in the clockwise direction.
A. -yi + xj B. xi - yj C. xi + yj D. yi - xj
Simplify by using the order of operations. Round your answer to the nearest hundredth, if necessary.6.42 + 6.6 - 5.8
A. 13.6 B. 51.84 C. 7.2 D. 41.76