Which method should be used to solve the system? Explain your answer, including a description of the first step.x2 + y2 =818x - 5y =6

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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Use the data set {-100, -99, -98, ..., -2, -1} to answer the following question(s).The data set has a median of

A. -50.5. B. -49.5. C. -50. D. -51. E. none of these

Mathematics

Solve the problem. Round to the nearest cent.Central Airlines offers a trade discount series of 30/25/5 for frequent flyers. If a round-trip airline ticket is $697, use the single discount equivalent to calculate the trade discount of a round-trip ticket.

A. $349.37 B. $278.80 C. $347.63 D. $418.20

Mathematics

Verify the identity. = 1 + sin x cos x

What will be an ideal response?

Mathematics

Factor completely. If the polynomial is prime, so state.16x2 - 25

A. (4x + 5)(4x - 5) B. (4x + 5)(4x + 5) C. (4x - 5)(4x - 5) D. prime

Mathematics