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antiseptic1488 [7]
3 years ago
13

PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!

Mathematics
1 answer:
Ber [7]3 years ago
7 0

Answer:  (-3, -2)


Step-by-step explanation:

The minimum is the vertex of a positive <em>(u-shaped)</em> parabola.  The vertex of the graph provided is located at (-3, -2).

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Ill give u brainliest plz help :3 if u can ofc take ur time
kupik [55]

Answer: 1. no

              2. yes

              3. no

              4. if they are talking about the repeating number in -5/6, then yes the repeating number is 3.

              5. no

I'm not 100% sure abt these answers but since nobody is answering so far here's my opinion :D I really don't want you to lose 100 points so pls b careful!!

3 0
3 years ago
A doctor at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she
Nataly_w [17]

Answer:

The minimum sample size needed is n = (\frac{1.96\sqrt{\sigma}}{4})^2. If n is a decimal number, it is rounded up to the next integer. \sigma is the standard deviation of the population.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.9}{2} = 0.05

Now, we have to find z in the Z-table as such z has a p-value of 1 - \alpha.

That is z with a pvalue of 1 - 0.05 = 0.95, so Z = 1.645.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

How large a sample must she select if she desires to be 90% confident that her estimate is within 4 ounces of the true mean?

A sample of n is needed, and n is found when M = 4. So

M = z\frac{\sigma}{\sqrt{n}}

4 = 1.96\frac{\sigma}{\sqrt{n}}

4\sqrt{n} = 1.96\sqrt{\sigma}

\sqrt{n} = \frac{1.96\sqrt{\sigma}}{4}

(\sqrt{n})^2 = (\frac{1.96\sqrt{\sigma}}{4})^2

n = (\frac{1.96\sqrt{\sigma}}{4})^2

The minimum sample size needed is n = (\frac{1.96\sqrt{\sigma}}{4})^2. If n is a decimal number, it is rounded up to the next integer. \sigma is the standard deviation of the population.

4 0
3 years ago
The Epic of Gilgamesh is the world’s oldest known
maw [93]
It’s b. Cuneiform writing
4 0
3 years ago
Read 2 more answers
2,000 into scientific notation
vladimir1956 [14]

Answer:

0.002

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Jenny filled 12 pitchers with an equal amount of lemonade and each the total amount of lemonade in the 12 pitchers was 41.4 L ho
Masteriza [31]
41.4L = 41400ml 41400/12= 3450ml
7 0
3 years ago
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