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Vanyuwa [196]
3 years ago
11

PLS HELP THIS IS DUE AT 11:59pm

Mathematics
2 answers:
Fudgin [204]3 years ago
6 0

Answer:

I think system 4 has no solution

Step-by-step explanation:

I'm sorry if you get it wrong

Greeley [361]3 years ago
4 0

Answer:

you realize u can just use desmos or wolfram alpha for all the answers,but since you prob dont know how to use them the answer is system 4

Step-by-step explanation:

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Tara watched a movie at 3:19. The movie she watched was 1:20 long. When was her movie over?
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About 4:39.
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4 0
3 years ago
Read 2 more answers
A chemist examines 15 geological samples for potassium chloride concentration. The mean potassium chloride concentration for the
Lelu [443]

Answer:

95% Confidence interval: (0.375,0.377)

Step-by-step explanation:

We are given the following in the question:

Sample mean, \bar{x} = 0.376 cc/cubic meter

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Alpha, α = 0.05

Sample standard deviation, s = 0.0012

Degree of freedom =

=n-1\\=15-1\\=14

95% Confidence interval:  

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

t_{critical}\text{ at degree of freedom 14 and}~\alpha_{0.05} = \pm 2.145  

0.376 \pm 2.145(\dfrac{0.0012}{\sqrt{15}} )\\\\ = 0.376 \pm 0.0006\\\\ = (0.3754,0.3766)\approx (0.375,0.377)  

(0.375,0.377) is the required 95% confidence interval for the population mean potassium chloride concentration.

5 0
3 years ago
Find the midpoint of the line segment joining points A and B.<br> A(2,- 7); B(2,3)
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Answer: (2, -2)

Step-by-step explanation:

\left(\frac{2+2}{2}, \frac{3-7}{2} \right)=(2,-2)

8 0
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Please help! I will give 5 star rating and brainlest ! To anyone that helps with this question
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Answer:

wat is the question?

Step-by-step explanation:

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3 years ago
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