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mash [69]
3 years ago
12

Y=3x+8 12x−4y=−32 ​ How many solutions does this system have?

Mathematics
1 answer:
Gnoma [55]3 years ago
5 0
-3x+y = 8
12x-4y = -32

(-3x+y = 8) 4
12x-4y = -32

-12x+4y = 32
12x-4y = -32

0=0

Infinitely many solutions.
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3 years ago
There are 9,481 eligible voters in a precinct. 500 were selected at random and asked to indicate whether they planned to vote fo
maria [59]

Answer:

The confidence limits for the proportion that plan to vote for the Democratic incumbent are 0.725 and 0.775.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

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Of the 500 surveyed, 350 said they were going to vote for the Democratic incumbent.

This means that n = 500, \pi = \frac{350}{500} = 0.75

80% confidence level

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The lower limit of this interval is:

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The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.75 + 1.28\sqrt{\frac{0.75*0.25}{500}} = 0.775

The confidence limits for the proportion that plan to vote for the Democratic incumbent are 0.725 and 0.775.

8 0
3 years ago
Idk what to do here?
creativ13 [48]

1 box =1 foot so you would have to count the boxes away from her

7 0
3 years ago
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