Solve the system of equations by the substitution method.

A. (1, 0)
B. no solution
C. (0, 1)
D. infinite number of solutions


Answer: A

Mathematics

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Express the area of the region bounded by the given line(s) and/or curve(s) as an iterated double integral.The lines , and  

A.
B.
C.
D.

Mathematics

Find the vertices, foci, and asymptotes for the hyperbola. Graph the hyperbola. -  = 1

A. Vertices at (-2, 0) and (2, 0);  
Foci at (- 2, 0) and (2, 0);
Asymptotes: y = - x and y = x

B. Vertices at (0, -10) and (0, 10);  
Foci at (0, - 2) and (0, 2);
Asymptotes: y = - x and y = x

C. Vertices at (-10, 0) and (10, 0);  
Foci at (- 2, 0) and (2, 0);
Asymptotes: y = - x and y = x

D. Vertices at (0, -2) and (0, 2);
Foci at (0, - 2) and (0, 2);
Asymptotes: y = - x and y = x

Mathematics

Use a calculator and the change-of-base formula to find the logarithm to four decimal places.log7  0.562

A. 12.4555 B. -0.2503 C. -3.3768 D. -0.2961

Mathematics

Find the product and simplify. Assume all variables represent nonnegative real numbers. ? 

A. 60
B. 30
C. 72
D. 30

Mathematics