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2 years ago

6

PLEASE HELP

1 answer:

riadik2000 [5.3K]2 years ago

3 0

Answer:

Ok. so let's teach you how to find the angles of a triangle. When you add all three sides, they must equal 180 degrees. Because of this, let's do some math. What is 96+35. Ima pretend you said 131 and so you would be right. Now let's subtract that from 180 degrees. 180-131 is 49 and so x is 49 degrees. Hope this helps!!

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3 years ago

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2 years ago

Solve the system: <br> 2/x - 3/y =-5; 4/x + 6\y =14

sertanlavr [38]

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<em><u>Solution:</u></em>

Let us assume,

$a = \frac{1}{x}\\\\b = \frac{1}{y}$

<em><u>Given system of equations are:</u></em>

$\frac{2}{x} - \frac{3}{y} = -5$

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<em><u>Rewrite the equation using "a" and "b"</u></em>

2a - 3b = -5 ------------ eqn 1

4a + 6b = 14 -------------- eqn 2

<em><u>Let us solve eqn 1 and eqn 2</u></em>

<em><u>Multiply eqn 1 by 2</u></em>

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<em><u>Add eqn 2 and eqn 3</u></em>

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( - ) --------------------

8a = 4

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Now let us go back to our assumed values

Substitute a = 1/2 in assumed values

$a = \frac{1}{x}\\\\\frac{1}{2} = \frac{1}{x}\\\\x = 2$

Substitute b = 2 in assumed value

$b = \frac{1}{y}\\\\2 = \frac{1}{y}\\\\y = \frac{1}{2}$

Thus the solution is $x = 2 \text{ and } y = \frac{1}{2}$

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2 years ago