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Hatshy [7]
3 years ago
13

Solve simultaneous equation 2x + 4y = 1 3x-5y=7

Mathematics
1 answer:
Tatiana [17]3 years ago
5 0
\left \{ {{2x+4y=1\ \ | *(-3)} \atop {3x-5y=7\ \ | *2}} \right. \\\\
 \left \{ {{-6x-12y=-3} \atop {6x-10y=14}} \right.\\+----\\add\ both\ equations\\\\
-22y=11\ \ \ | divide\ by\ -22\\\\
y=-\frac{1}{2}\\\\
2x=1-4y\ \ | divide\ by\ 2\\\\
x=\frac{1-4y}{2}=\frac{1-4*(-\frac{1}{2})}{2} =\frac{3}{2}
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Rational im pretty sure from what i remember
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Joe nas to take two quizzes tomorrow. He nas only enough time to study one of them. • The science quiz has 7 true-or-false quest
Nostrana [21]

Answer:

C.

Step-by-step explanation:

Science questions are T/F. That's .5 or \frac{1}{2} chance to get it right.

7 questions. Each with a \frac{1}{2}.

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6 0
3 years ago
4x + 5y = 22<br> 7x - 3y = -32
lana66690 [7]

Answer:

x = -2

y = 6

Step-by-step explanation:

i multiplied the 1st equation by 3 and the 2nd by 5 to get the y-terms to zero out

   12x + 15y = 66

+  <u>35x - 15y = -160</u>

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x = -94/47

x = -2

substitute -2 for 'x' to solve for 'y':

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3 0
3 years ago
Solve for x pls .............................................................................
Eddi Din [679]
There is no solution
Hope this helps :)
5 0
3 years ago
Read 2 more answers
The answer to this problem?
LenaWriter [7]

The simplified expression of \sqrt{\frac{162x^9}{2x^{27}}} is \frac{9}{x^9}

<h3>How to simplify the expression?</h3>

The expression is given as:

\sqrt{\frac{162x^9}{2x^{27}}}

Divide 162 and 2 by 2

\sqrt{\frac{81x^9}{x^{27}}}

Take the square root of 81

9\sqrt{\frac{x^9}{x^{27}}}

Apply the quotient rule of indices

9\sqrt{\frac{1}{x^{27-9}}}

Evaluate the difference

9\sqrt{\frac{1}{x^{18}}}

Take the square root of x^18

\frac{9}{x^9}

Hence, the simplified expression of \sqrt{\frac{162x^9}{2x^{27}}} is \frac{9}{x^9}

Read more about expressions at:

brainly.com/question/723406

#SPJ1

5 0
2 years ago
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