Solve the system by using the inverse of the coefficient matrix. x + 3y = -8 21x + 6y = 3
A. {(1, -3)}
B. {(-1, 3)}
C. {(3, -1)}
D. {(-3, 1)}
Answer: A
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Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with vertices (0, ±7) and foci (0, ±3)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Use a calculator with a cube root key to find the root. Round to the nearest thousandth.
A. -5.657 B. -3.175 C. -10.667 D. -4.579
Use Newton's method to estimate the requested solution of the equation. Start with given value of x0 and then give x2 as the estimated solution.-x2 + 4x -1 = 0; x0 = 0; Find the left-hand solution.
A. -0.33 B. 0.14 C. 0.23 D. 0.25
Solve the problem.A small city has 50 police officers to be apportioned among 8 precincts based on the population of each precinct. The populations are given in the following table. 
Find the apportionment for the Seventh Precinct using Adams' method.
A. 7 B. 6 C. 5 D. 4