2 years ago

Point O is the center of the circle.

Mathematics

1 answer:

photoshop1234 [79]2 years ago

6 0

Answer:

Step-by-step explanation:

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The batteries from a certain manufacturer have a mean lifetime of 850 hours, with a standard deviation of 70 hours, assuming tha

matrenka [14]

To answer (a), we will need to find the Z value for 710 hours and 990 hours.

$\begin{gathered} For\text{ 710} \\ Z\text{ = }\frac{x-\mu}{\sigma} \\ \text{ = }\frac{710-850}{70} \\ \text{ = -2} \\ p\text{ =0.0228 } \\ For\text{ 990:} \\ Z\text{ = }\frac{990-850}{70} \\ \text{ =2} \\ p\text{ = 0.9772} \end{gathered}$ $\begin{gathered} To\text{ find P \lparen–2 \le Z \le 2\rparen} \\ =\text{ 0.9772 -0.0228} \\ =\text{ 0.9544} \\ =95.44\% \end{gathered}$

B) 68% of data lies between one standard deviation of the mean.

850 +70 = 920

850 - 70 = 780

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1 year ago

José sets up computers. He has been working

adell [148]

Answer:

what is the full question?

Step-by-step explanation:

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2 years ago

4 X 10⁴) + (6 x 10²)

Ksenya-84 [330]

Answer:40,600

Step-by-step explanation:

10x10x10x10=10,000

10x10=100

4x10,000+6x100

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3 years ago

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Is y=x/2+6 a liener or non liener function explain

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Nonlinear, ..................

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2 years ago

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You have set up a webpage for your company. your logo took up 2/7 of your allotted space on the main page and the location infor

Maksim231197 [3]

So we want to find how much more space the logo took up.

So just subtract the location info from the logo space.

2/7 - 1/10

To subtract, you just want to find a common denominator. In this case it would be 70.

2/7 * 10/10 - 1/10 * 7/7

20/70 - 7/70

Then just subtract.

13/70

So that's the fraction. For the percent, just divide.

13/70 = 0.186 ish

Or, 18.6% ish

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3 years ago