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denis23 [38]
3 years ago
13

Solve the system of equations. –5x + 3y + 2z = 19 x + 4y + 3z = –27 15x – 9y – 6z = –55

Mathematics
1 answer:
mash [69]3 years ago
4 0
For -5x+3y+2z=19 the answer is -19/3
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Step-by-step explanation:

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3 years ago
Find the zeroes of the following equation:
weqwewe [10]

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<u>Step-by-step explanation:</u>

Note: The question would have made more sense if if it was 2/x = x - 1 but I will answer it as written.

\dfrac{1}{x}=x-1\qquad \text{Restriction: }x\neq 0\\\\\\\text{Cross multiply, simplify, and set equal to zero:}\\1=x(x-1)\\\\1=x^2-x\\\\0=x^2-x-1\\\\\\\text{This is not factorable so you will need to use Quadratic Formula:}\\\\x=\dfrac{-(-1)\pm \sqrt{(-1)^2-4(1)(-1)}}{2(1)}\\\\\\x=\dfrac{1\pm \sqrt5}{2}

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gregori [183]

Answer:

If an angle of 1 isosceles triangle is congruent to an angle of another isosceles triangle the triangles are similar. sometimes If the corresponding sides of 2 similar triangles are in a ratio of 3:4 then the there perimeters are in a ratio of 3:4. brainlist

Step-by-step explanation:

7 0
3 years ago
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