In the system of linear equations below, q and r are constants, The solution is (-1,4) qx- ry = 18

rx + qy= 13

q=?
r=?

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Ответ:

leyslebravo2729

10.12.2020

Mathematics

$\boxed{\textsf{ The net amount to be paid is \textbf{ \$ 15.30 }}}$

Step-by-step explanation:

Given that Graice went out to eat and she ordered chicken tenders for $ 11.50 and a soft drink for $ 1.25 . She also wants to leave a tip of 20% of the total amount . So ,

=> Total amount that should be paid = Amount of chicken tenders + Amount of soft drink.

= $( 11.50 + 1.25 )

= $ 12.75

Now on this amount she wants to give a tip of 20 % . So the net amount wil be ,

$\sf\implies Net_{(Amount)}= Total \ cost + 20\% \ of \ Total \ cost \\\\\sf\implies Net_{(Amount)}= \$ 12.75 + 20\% of \$ 12.75 \\\\\sf\implies Net_{(Amount)}= \$ (12.75 + 2.55 )\\\\\sf\implies \boxed{\pink{\sf Net_{(Amount)}= \$ 15.30 }}$

★ Hence the net amount to be paid is $ 15.30 .

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In the system of linear equations below, q and r are constants, The solution is (-1,4) qx- ry = 18 rx + qy= 13 q=? r=?