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dominikbatt
13.02.2020 •
Mathematics
Which ordered pair is the best estimate for the solution of the system of equations? y=−2/5x−2y=5x+1
(−0.5, −1.75)
(−1, −2)
(0, −2)
(−0.5, −1)
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Ответ:
Option a:
is the solution to the system of equations.
Explanation:
The equations are
and ![y=5 x+1](/tpl/images/0510/2126/d07ec.png)
Equating these two equations, we have,
Taking LCM and multiplying both sides by 5, we get,
Simplifying , we get,
Substituting the value of x in
, we get,
Thus, the solution is![\left(-\frac{5}{9},-\frac{16}{9}\right)](/tpl/images/0510/2126/7f23d.png)
Changing the solution from fraction to decimal, we get,![(-0.556,-1.778)](/tpl/images/0510/2126/7f428.png)
Thus, the solution is![(-0.5,-1.75)](/tpl/images/0510/2126/b74a3.png)
Hence, option a is the correct answer.
Ответ: