Need help................

Mathematics

1 answer:

Triss [41]3 years ago

6 0

827537517172763 kahvxjx

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Pythagorean theorem to find the length of the hypotenuse in the triangle 16 30

pishuonlain [190]

Answer:

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Step-by-step explanation:

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2 years ago

Substation method x-2y=5 ,<br> 3x-5y=8

valina [46]

$x-2y=5 \\
3x-5y=8 \\ \\
\hbox{solve the first equation for x:} \\
x-2y=5 \ \ \ |+2y \\
x=2y+5 \\ \\
\hbox{substitute 2y+5 for x in the second equation:} \\
3(2y+5)-5y=8 \\
6y+15-5y=8 \\
y+15=8 \ \ \ |-15 \\
y=-7 \\ \\
x=2y+5=2 \times (-7)+5=-14+5=-9 \\ \\
\boxed{(x,y)=(-9,-7)}$