Verify that the matrix is invertible and find its inverse.A = 
A. A-1 = 
B. A-1 = 
C. A-1 = 
D. A-1 = 
Answer: A
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Determine whether the given function satisfies Laplace's equation.f(x, y, z) = 8x2 - 5y2 - 3z2
A. Yes B. No
Solve the indicated equation analytically.Consider the formula T = 591 - 76 cos 2?, where ? is measured in degrees. To the nearest hundredth of a degree, what is the smallest positive value of ? for which the value of T will be 625?
A. 58.29° B. 116.58° C. 119.58° D. 55.29°
Find the indicated term for the arithmetic sequence with first term, a1, and common difference, d.Find a8, when a1 = -8, d = -3.
A. 13 B. -29 C. -32 D. 16
Find the standard deviation s for the given data. Round your answer to one more decimal place than the original data.To get the best deal on a CD player, Tom called eight appliance stores and asked the cost of a specific model. The prices he was quoted are listed below:$344$354$313$121$213$152$170$135Compute the standard deviation(s).
A. $97.07 B. $471,860.00 C. $405,900.50 D. $174.00