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hjlf
3 years ago
6

What is the solution to 2x-3y=-6 and y=-1/3x-4

Mathematics
1 answer:
Hitman42 [59]3 years ago
6 0

Answer:

(-6,-2)

Step-by-step explanation:

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A dog can eat 7cans of food in 3 days. At this rate ,how many cans can he eat in 3+d days
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A newsgroup is interested in constructing a 90% confidence interval for the proportion of all Americans who are in favor of a ne
Leto [7]

Answer:

The 90% confidence interval for the proportion of all Americans who are in favor of a new Green initiative is (0.6247, 0.6923).

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.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the z-score that has a p-value of 1 - \frac{\alpha}{2}.

Of the 533 randomly selected Americans surveyed, 351 were in favor of the initiative.

This means that n = 533, \pi = \frac{351}{533} = 0.6585

90% confidence level

So \alpha = 0.1, z is the value of Z that has a p-value of 1 - \frac{0.1}{2} = 0.95, so Z = 1.645.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6585 - 1.645\sqrt{\frac{0.6585*0.3415}{533}} = 0.6247

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6585 + 1.645\sqrt{\frac{0.6585*0.3415}{533}} = 0.6923

The 90% confidence interval for the proportion of all Americans who are in favor of a new Green initiative is (0.6247, 0.6923).

6 0
3 years ago
Classify the following triangle. Check all that apply
Stels [109]

Its equilateral ( all sides are equalA0

Also its acute.

D and F

8 0
3 years ago
What is the solution to equation? <br><br> 4x+5=2x-3
Masteriza [31]
4x - 2x = - 3 - 5
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8 0
4 years ago
Russell works at a football concession stand selling drinks for $2 and bags of chips for $3
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Answer:

its 5

Step-by-step explanation:

2+3 = 5

-_-

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3 years ago
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