3 years ago

24. Mailboxes Plus sends packages overnight for $5 plus $0.25 per ounce

Mathematics

1 answer:

velikii [3]3 years ago

8 0

Answer:

his package weighs 30 ounce

Step-by-step explanation:

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Solve system by subsubstitution?<br> 14x-2y=46<br> -7x+y=-23

e-lub [12.9K]

$14x-2y=46 \\
-7x+y=-23 \\ \\
\hbox{solve the 2nd equation for y:} \\
-7x+y=-23 \\
y=7x-23 \\ \\
\hbox{substitute 7x-23 for y in the 1st equation:} \\
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