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Jobisdone [24]
3 years ago
7

Simplify. Rewrite the expression in the form y^n y^-4•y^3

Mathematics
1 answer:
Dmitry_Shevchenko [17]3 years ago
6 0

Answer:

y^{-1}

Step-by-step explanation:

This question is asking us to rewrite the original expression it in the form y^n

First we have

(y^{-4} )y^3

By the law of exponents we know that when we are multiplying expressions that have the same base, we need to add up the exponents.

Thus, this would mean that, in order to multiply this expression, we need to sum up the exponents so we have:

-4+3=-1

Thus, this expression can be rewritten as:

(y^{-4} )y^3=y^{-4+3} =y^{-1}

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Rom4ik [11]

Answer:

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Where:  

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}  

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}  

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\bar y= \frac{\sum y_i}{n}  

And we can find the intercept using this:  

b=\bar y -m \bar x  

On this case the correct answer would be:

E.  none of the above

Since the intercept has no association between the increase/decrease of the dependent variable respect to the independent variable

Step-by-step explanation:

Assuming the following options:

A.  there is a positive correlation between X and Y

B.  there is a negative correlation between X and Y

C.  if X is increased, Y must also increase

D.  if Y is increased, X must also increase

E.  none of the above

If we want a model y = mx +b where m represent the lope and b the intercept

m=\frac{S_{xy}}{S_{xx}}  

Where:  

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}  

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}  

\bar x= \frac{\sum x_i}{n}  

\bar y= \frac{\sum y_i}{n}  

And we can find the intercept using this:  

b=\bar y -m \bar x  

On this case the correct answer would be:

E.  none of the above

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3 0
2 years ago
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Step-by-step explanation:

way to solve for this is to set up the base and height. then you can use the area (if given) to divide the area from the side you know to get your answer.

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Answer: The length of JK is 10.5 m

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