2 years ago

Can someone explain how I do this?

Mathematics

2 answers:

lorasvet [3.4K]2 years ago

8 0

Answer:

oh soooooooooooooooo sorry

Step-by-step explanation:

sorry

Sergeu [11.5K]2 years ago

5 0

Answer:

12.5N

Step-by-step explanation:

See attached image.

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3 years ago

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2 years ago

Please help me to find the answer Y=2X 3X+4Y=22 Y=2X 3X+4Y=22

RSB [31]

<h3>System of equations.</h3>

$\left\{\begin{array}{ccc}y=2x&(1)\\3x+4y=22&(2)\end{array}\right$

Put (1) to (2):

$3x+4(2x)=22\\3x+8x=22\\11x=22\qquad|\text{divide both sides by 11}\\\boxed{x=2}$

Substitute the value of x to (1):

$y=2\cdot2\\\boxed{y=4}$

Solution:

$\huge\boxed{\left\{\begin{array}{ccc}x=2\\y=4\end{array}\right}$

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2 years ago