Find the inverse of the matrix A, if it exists.A = 
A. A-1 = 
B. A-1 =
C. A-1 does not exist.
D. A-1 = 
Answer: A
Mathematics
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Complete.19
gal = qt
A. 156 B. 78 C. 76 D. 38
Mathematics
Calculate the flux of the field F across the closed plane curve C.F = xi + yj; the curve C is the circle (x - 10)2 + (y + 4)2 = 16
A. 2? B. 32? C. 32? + 40 D. 0
Mathematics
Solve the problem.The time T in seconds for a pendulum of length L feet to make one swing is given by 
How long is a pendulum (to nearest hundredth) if it makes one swing in 1.4 seconds? Use 3.14 for ?.
A. 13.73 ft B. 86.24 ft C. 21.56 ft D. 2.19 ft
Mathematics
Make the indicated temperature conversion. Round answers to one decimal place if necessary.Convert 23°F to Celsius.
A. 9.4°C B. 73.4°C C. 19.2°C D. -5.0°C
Mathematics