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solve by addition methodx +3y +z =6 3x + y – z = -2 2x +2y – z = 1 thanks
1. 0 answers
2. 713 views
Finances. During one month, a homeowner used 500 units of electricity and 100 units of gas for a total cost of $352. The next
1. 1 answer
2. 700 views
Flying with the wind, a pilot flew 600 mi between two cities in 4 h. The return trip against the wind took 5 h. Find the rate of
1. 1 answer
2. 946 views
Is it possible to subtract two polynomials, each of degree 3, and have the difference be a polynomial of degree 2? If so, give
1. 1 answer
2. 807 views
) If x is a nonzero real number, is x–2 always positive, always negative, or positive or negative depending on whether x is
1. 1 answer
2. 767 views

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