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ch4aika [34]
3 years ago
13

Solve the system of equations and choose the correct ordered pair. 

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
7 0
Multiply first equation by 8, 
24x + 40y = 352
Multiply second equation by 3, 
24x - 21y = -75

Now, subtract second from 1st, 
61y = 427
y = 427/61
y = 7

Substitute it in very first equation, 
3x + 5(7) = 44
3x = 44 - 35
x = 9 / 3
x =3

In short, Your Answer would be Option D) (3, 7)

Hope this helps!
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3 years ago
Homework due at 12:00<br> I Need Help
Leya [2.2K]

Answer:

<em>k = - 7.5 </em>

Step-by-step explanation:

Slope "m" of a line through points

( x_{1} , y_{1} )

( x_{2} , y_{2} )

is m = \frac{y_{2} -y_{1} }{x_{2} -x_{1} }

Slopes of perpendicular lines are opposite reciprocal: m_{1} m_{2} = - 1

~~~~~~~~~~~~~~~

The slope of a line through points (0, 7) and (2, 10)

m_{1} = \frac{10-7}{2-0} = \frac{3}{2}

Slope of perpendicular line through points (3, 5) and (k, 12) is m_{2} = -\frac{2}{3}

or m_{2} = \frac{12-5}{k-3}

\frac{7}{k-3} = -\frac{2}{3}

2(k - 3) = - 21

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<em>k = - 7.5</em>

6 0
3 years ago
Find the area of square c.
wolverine [178]
7√41



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8 0
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Natasha2012 [34]

Answer:

hi

<u>Option C</u> will be your answer

Step-by-step explanation:

have a nice day!!

3 0
3 years ago
Halla 0,3% de 5000 porfavooorr ayudaaaaaa
RUDIKE [14]

Answer:

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Step-by-step explanation:

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