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masya89 [10]
3 years ago
13

6j+8j+(5+5) Use the distributive property

Mathematics
1 answer:
vova2212 [387]3 years ago
5 0

Hello!

Answer:

\boxed{14j+10}

Step-by-step explanation:

Distributive property: →→ a(b+c)=ab+ac

Order of operations stands for:

↓

Parenthesis

Exponent

Multiply

Divide

Add

Subtract

*Left to right*

Please Excuse My Dear Aunt Sally!

First, you remove parenthesis.

6j+8j+5+5

Then, you add by the numbers from left to right.

6+8=14

14j+5+5

5+5=10

<u><em>14j+10 is the final answer.</em></u>

Hope this helps!

Have a nice day! :)

:D

-Charlie

Thanks!

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Answer:

x = 10

Step-by-step explanation:

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Given

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fgiga [73]

Answer:

a) Figure attached

b) P(234

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

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And we can find this probability with this difference:

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An we know using the graph in part a that this area correspond to 0.95 or 95%

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And we can find this probability with this difference:

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An we know using the graph in part a that this area correspond to 0.95 or 34+34+13.5+2.35%=83.85%

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And using the z score we got:

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And that correspond to approximately 0.15%

Step-by-step explanation:

Part a

For this case we can see the figure attached.

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Part b

Let X the random variable that represent the length of human pregnancy of a population, and for this case we know that:

Where \mu=266 and \sigma=16

We are interested on this probability

P(234

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(234

And we can find this probability with this difference:

P(-2

An we know using the graph in part a that this area correspond to 0.95 or 95%

Part c

P(250

And we can find this probability with this difference:

P(-1

An we know using the graph in part a that this area correspond to 0.95 or 34+34+13.5+2.35%=83.85%

Part d

We want this probability:

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And using the z score we got:

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And that correspond to approximately 0.15%

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y = -3x + 5
y = -3(1)  + 5
y = -3 + 5
y = 2
(x, y) = (1, 2)
6 0
3 years ago
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