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3 years ago

How many solutions 9x +2y =9 -3x + y=2

1 answer:

Tju [1.3M]3 years ago

6 0

Answer:

Step-by-step explanatio

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harina [27]

Answer:

I really don't know so sorry

8 0

3 years ago

vekshin1

No entendí ni madre

6 0

3 years ago

zimovet [89]

Answer:

B. x+1 / x+9

Step-by-step explanation:

7 0

3 years ago

dexar [7]

This is your perfect answer

4 0

3 years ago

Kryger [21]

Answer:

The value of n is 15.

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 n 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 n is 15.

6 0

3 years ago