Which method should be used to solve the system? Explain your answer, including a description of the first step.7x2 - 8y2 =1002x + 2y =3
What will be an ideal response?
Substitution should be used, because using elimination would mean introducing an xy term into the second equation unnecessarily. The second equation should be solved for x or y.
Mathematics
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Solve the system by elimination. If the system is inconsistent or dependent, say so. x + 9y = -26-7x + 8y = -31
A. (-1, -2) B. (0, -2) C. (1, -3) D. empty set solution; inconsistent system
Mathematics
Use synthetic division to decide whether the given number k is a zero of the given polynomial function.k = 2 + 2i; f(x) = x2 - 4x + 8
A. Yes B. No
Mathematics
Find the reciprocal of the number.
A. 5
B. 
C. 
D. 
Mathematics
Solve the formula for the indicated letter. Assume that all variables represent nonnegative numbers.
= kn, for n
A. n = 
B. n = ±
C. n = 
D. n = 
Mathematics