Mathematics, 06.05.2020 18:00 laywah4
To solve the system of linear equations 8 x + 5 y = 18 and 6 x + y = negative 2. by using the linear combination method, Amos decided that he should first multiply the second equation by โ5 and then add the two equations together to eliminate the y-terms. His calculations are as shown. 8 x + 5 y = 18. + 6 x minus 5 y = 10. 14 x = 28. StartFraction 14 x Over 14 EndFraction = StartFraction 28 Over 14 EndFraction. X = 2. 6 x + y = negative 2. 6 (2) + y = negative 2. 12 + y = negative 2. 12 + y minus 12 = negative 2 minus 12. y = negative 14. Amosโs solution is (2, โ14). What did he do wrong? He multiplied the equation 6 x + y = negative 2. by โ5 incorrectly. He added the equations 8 x + 5 y = 18 and 8 x + 5 y = 18 incorrectly. He substituted 2 into the equation 6 x + y = negative 2. incorrectly. He solved the equation 12 + y = negative 2 for y incorrectly.
Answers: 1
Mathematics, 21.06.2019 18:00
14. (05.02 lc) what is the value of y in the solution to the following system of equations? (5 points) 2x + y = โ4 5x + 3y = โ6
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Mathematics, 22.06.2019 00:00
Yvaries directly as x. y =90 when x=6. find y when x=13
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Mathematics, 22.06.2019 04:00
Renee hiked for 6 3 /4 miles. after resting, renee hiked back along the same route for 5 1 /4 miles. how many more miles does renee need to hike to return to the place where she started? represent your answer as a simplified mixed number, if necessary.
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To solve the system of linear equations 8 x + 5 y = 18 and 6 x + y = negative 2. by using the linear...
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