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7Bx%20%2B%20z%7D%20%3D%202%2C%20%5Cquad%20%5Cfrac%7Byz%7D%7By%20%2B%20z%7D%20%3D%203%5C%5D" id="TexFormula1" title="\[\frac{xy}{x + y} = 1, \quad \frac{xz}{x + z} = 2, \quad \frac{yz}{y + z} = 3\]" alt="\[\frac{xy}{x + y} = 1, \quad \frac{xz}{x + z} = 2, \quad \frac{yz}{y + z} = 3\]" align="absmiddle" class="latex-formula"> Solve system of equations
1 answer:
Answer:

Step-by-step explanation:
Let's re-write the equations in order to get the variables as separated in independent terms as possible \:
First equation:

Second equation:

Third equation:

Now let's subtract term by term the reduced equation 3 from the reduced equation 1 in order to eliminate the term that contains "y":

Combine this last expression term by term with the reduced equation 2, and solve for "x" :

Now we use this value for "x" back in equation 1 to solve for "y":

And finally we solve for the third unknown "z":

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Answer:
139.528
Step-by-step explanation:
multiply
1.304 over 107
The 2 is in the tenths place so it is two-tenths.
Two-tenths = 2/10= .2
I hope that answers your question.
Answer:
D. angle 7 and angle 5.
Step-by-step explanation:
It is actually option 'D.' This is because angle 7 and angle 5 are vertical angles; vertical angles are always congruent.
Answer:
the answer is C
Step-by-step explanation:

![\sqrt[3]{ {n}^{3} } = \sqrt[3]{380}](https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7B%20%7Bn%7D%5E%7B3%7D%20%7D%20%20%3D%20%20%5Csqrt%5B3%5D%7B380%7D%20)
n = 7.25
7 < 7.25 <8