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3 years ago

Please show work ela common core 6th grade 1 step equations

Mathematics

2 answers:

horrorfan [7]3 years ago

7 0

Here are the first five:

1) a+3/4=-1/4
a=-1/4-3/4
a=-1

2) c-2/7=8/7
c=8/7+2/7
c=10/7 OR 1 3/7

3) 7/5=g-6/5
7/5+6/5=g
g=13/5 OR 2 3/5

4) 2/3=1/3+k
2/3-1/3=k
1/3=k

5) 5/6=m+1/6
5/6-1/6=m
4/6=m
2/3=m

arlik [135]3 years ago

4 0

Some of the answers are going to be negative fractions, and some are going to be positive. I can't show the work on here right now but I hope that this helped a little bit. If you have any further questions then let me know and I can try to help you!

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Step-by-step explanation:

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".

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Part a

Let X the random variable that represent the variable of interest of a population, and for this case we know the distribution for X is given by:

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Where $\mu=5$ and $\sigma=1.2$

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

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

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And we can find this probability using the complement rule:

$P(z>-1.25)=1-P(z$

Part b

We are interested on this probability

$P(X$

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:

$P(X$

And we can find this probability uing the normal standard table:

$P(z$

Part c

$P(3.5$

And we can find this probability with this difference:

$P(-1.25$

And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.

$P(-1.25$

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3 years ago

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kakasveta [241]

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