3 years ago

What is x-5(x-2)-(x-2)=50

1 answer:

4 0

X= -14/3 that's the answer there bud i need to make this 20 caracters longs so yeah x=-14/3

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D is the answer

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alexira [117]

Answer:

Step-by-step explanation:

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3 years ago

Stels [109]

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docker41 [41]

30 seconds, half a minute.

8 0

3 years ago

Kay [80]

Answer: Option 'c' is correct.

Step-by-step explanation:

Since we have given that

n = 240

mean = 22.3 hours

standard deviation = 6 hours

At 99% level of confidence, z = 2.58

So, interval would be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=22.3\pm 2.58\times \dfrac{6}{\sqrt{240}}\\\\=22.3\pm 0.99\\\\=(22.3-0.99,22.3+0.99)\\\\=(21.31,23.29)$

Hence, Option 'c' is correct.

3 0

3 years ago