Mathematics, 26.06.2020 19:01, Masielovebug
1. Lisa is working with the system of equations x+2y=7 and 2x−5y=5. She multiplies the first equation by 2 and then subtracts the second equation to find 9y=9, telling her that y=1. Lisa then finds that x=5. Thinking about this procedure, Lisa wonders: There are lots of ways I could go about solving this problem. I could add 5 times the first equation and twice the second or I could multiply the first equation by -2 and add the second. I seem to find that there is only one solution to the two equations but I wonder if I will get the same solution if I use a different method? A. What is the answer to Lisa's question? Explain. B. Does the answer to (a) change if we have a system of two equations in two unknowns with no solutions? What if there are infinitely many solutions? 2. Graph (Links to an external site.) the following linear system. What is the solution? y = 2x + 4 y = 3x + 2
Answers: 1
Mathematics, 21.06.2019 19:00, sonyalehardez
Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?
Answers: 2
Mathematics, 21.06.2019 21:30, bella122805
Awater truck is filling a swimming pool. the equation that represents this relationship is y=19.75x where y is the number of gallons of water in the pool and x is the number of minutes the truck has been filling the pool.
Answers: 1
Mathematics, 21.06.2019 22:00, iamsecond235p318rq
Find the greatest common factor of the followig monomials 46g^2h and 34g^6h^6
Answers: 1
1. Lisa is working with the system of equations x+2y=7 and 2x−5y=5. She multiplies the first equatio...
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