We subtract the second equation from the first and we obtain 2X-3Y=0
We multiply the second equation with 2 and add it to the third. We obtain 16X+4Y+2z=1206 and, when added to the third, 36X-6Y=1200 or 6X-Y=200.
We now have a new system of equations with 2 unknown variables, as such:
2x-3Y=0 and 6X-Y=200. We multiply the first equation by 3 and have 6X-9Y=0. We subtract the first equation from the second and the result is 8Y=200 and Y=25. X=37.5 and Z=203
c. Multiply the 1 stequation by 3 and the second by 5. The result is 66X+15Y+21Z=36 and 50X+15Y+10Z=25....
Systems of Equations (Part I) Answer the question and solve the problems below. Make sure you show all your work so you can get partial credit even if you get the final answer wrong. Best Rentals charges a daily fee plus a mileage fee for renting its cars. Barney was charged $123.00 for 3 days and 300 miles, while Mary was charged $216.00 for 5 days and 600 miles. What does Best
Use the variables X and Y to represent the values of shares of Company X and Company Y. 2000X + 10000Y = 340,000 8000X + 6000 Y = 340,000 Solve for the value of a share of Company X and Company Y. Show your work. 2000x = 340,000 -- 10000y x = 170 -- 5y 8000 (170 -- 5y) + 6000y = 340,000 1,360,000 -- 40,000y + 6000y = 340,000 -34,000y = -1020000 y = 30 2000x + 300000
2007, p. 115). Likewise, a study by Wyndhamm and Saljo found that young algebra learners were more successful in their problem-solving efforts when collaborating in a group environment. According to these researchers, "An experiment involving 14 small groups of Swedish students (usually 3 per group) aged 10, 11, and 12 years shows that these students acting in groups and creating shared contextualizations were able to solve mathematics word problems
Managerial Math Solve each of the following equations for the unknown variable. a) 15x + 40 = 8x - 15x +49 = 8x 49= -7x b) 7y - 1 = 23-5y Y= c) 9(2x + 8) = 20 - (x + 5) = 15-x d) 4(3y - 1) - 6 = 5(y + 2) Y = (20/7) Bob Brown bought two plots of land for a total of $110,000. On the first plot, he made a profit of 16%. On the
Education What are the differences between the Common Core Standards for grade eight and the New York State standards of mathematics? Common Core Standards For one thing, the Common Core Standards offer narrative (rather than bullet points) and go into more specific and in depth instructions through narrative. The Common Core Standards expressly mentions three critical areas out in front: a) formulating and reasoning about "expressions and equations," which includes "modeling an association
South Australia Ambulance Service Organizational Behaviour Case Analysis Who Ray Main should develop a system which empowers the culture of organization along with the shift towards automation and excellent customer service. Has to do what The leadership of South Australia Ambulance Service is required to do the following: To set a strategic direction for SAAS this would be compatible to the new strategic plan. Meet the service expectations of the clients by focusing more on efficient customer
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