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1 year ago

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Kuta Software - Infinite Algebra 2 Systems of Two Equations Solve each system by graphing. Name Sorintho Leto Date 128 1) y=-3x+

4 2) y=x+2 y= 3x - 2 Xニー3

1 answer:

Vikentia [17]1 year ago

8 0

$\begin{gathered} y=-5 \\ 5x+y=-20 \\ 5x-5=-20 \\ 5x=-20+5 \\ 5x=-15 \\ x=-\frac{15}{5} \\ x=-5 \end{gathered}$

Hence, correct (x , y) is (-5 , -5)

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Answer:

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Step-by-step explanation:

The combined proportion is computed using the formula:

$P=\frac{n_{A}\cdot p_{A}+n_{B}\cdot p_{B}}{n_{A}+n_{B}}$

The information provided is as follows:

$n_{A}=25\\p_{A}=0.56\\n_{B}=n\\p_{B}=0.60\\P=0.575$

Compute the value of <em>n</em> as follows:

$P=\frac{n_{A}\cdot p_{A}+n_{B}\cdot p_{B}}{n_{A}+n_{B}}$

$0.575=\frac{25\times 0.56+n\times 0.60}{25+n}\\\\0.575(25+n)=14+0.60n\\\\14.375+0.575n=14+0.60n\\\\0.60n-0.575n=14.375-14\\\\0.025n=0.375\\\\n=15$

Thus, the value of <em>n </em>is 15.

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