Solve each of the following systems of equations. If the system is inconsistent or dependent, say so. x + 7y = -138x + 7y = -55
A. (1, -6)
B. No solution
C. (-5, -2)
D. (-6, -1)
Answer: D
Mathematics
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Solve.The outside of a water storage tank is in the shape of a sphere. If the radius is 14 feet, approximate the volume of the tank in cubic feet. (Use ? = 3.14 as the approximate value.)
A. 11,488.21 ft3 B. 820.59 ft3 C. 8616.16 ft3 D. 615.44 ft3
Mathematics
Solve the matrix equation for X.Let A = 
and B = 
;
4B - 4A = X
A.
X = 
B.
X = 
C.
X = 
D.
X = 
Mathematics
Solve.The population of a town was 25,100 at the beginning of 1970. If the population decreased 250 people per year, how many people lived in the town at the beginning of 1985?
A. 21,350 B. 21,600 C. 3750 D. 21,100
Mathematics
Find the equilibrium vector for the transition matrix.
A. [0.686 0.314] B. [0.619 0.381] C. [0.314 0.686] D. [0.381 0.619]
Mathematics