3 years ago

Can someone help please?

Mathematics

1 answer:

vaieri [72.5K]3 years ago

7 0

Answer:

Step-by-step explanation:

$x^{2} + 2x =6\\\\x^{2} +2x + 1^{2} = 6 + 1^{2} \\\\(x+1)^{2} = (\sqrt{7})^{2}$

$x+1 = \sqrt{7}$

x = -1 ± $\sqrt{7}$

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3 years ago

The operating costs for each machine for one day have an unknown distribution with mean 1610 and standard deviation 136 dollars.

BabaBlast [244]

Answer:

20.27

Step-by-step explanation:

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This is s when $\sigma = 136, n = 45$ . So

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So the correct answer is:

20.27

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Papessa [141]

Answer:

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Step-by-step explanation:

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2 years ago

Can someone help please? ​

Can someone help please?