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mixas84 [53]
3 years ago
5

Which system of equations below has exactly one solution? y = –8x – 6 and y = –8x + 6 y = –8x – 6 and One-halfy = –4x – 3 y = –8

x – 6 and y = 8x – 6 y = –8x – 6 and –y = 8x + 6
Mathematics
2 answers:
murzikaleks [220]3 years ago
7 0

Answer:

y=-8x-6 and

y=8x-6 has exactly one solution

Step-by-step explanation:

meriva3 years ago
6 0

Answer:

y = –8x – 6 and y = 8x – 6

Step-by-step explanation:

-8x - 6 = 8x - 6

16x = 0

x = 0

y = 8(0) - 6 = -6

The only solution is (0,-6)

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Step-by-step explanation:

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Standard deviation : \sigma=3

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Now, the 99.9% confidence interval for the mean difference between the marks scored last week and marks scored this week by all the students will be :-

12\pm\ (3.4807567)\dfrac{2}{\sqrt{35}}\\\\=12\pm1.18\\\\=(10.82\ , 13.18)

Hence, the  99.9% confidence interval for the mean difference between the marks scored last week and marks scored this week by all the students = (10.82\ , 13.18)

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