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Amanda [17]
4 years ago
15

Racionalize o denominador da equação abaixo: 5 + 3 ²√5 / ²√5

Mathematics
1 answer:
GrogVix [38]4 years ago
4 0
I hope this helps

\cfrac{5+3 \sqrt{5} }{ \sqrt{5} } =\cfrac{(5+3 \sqrt{5}) \sqrt{5}  }{ \sqrt{5}* \sqrt{5}  }= \cfrac{5 \sqrt{5}+15 }{5}  = \cfrac{5 (\sqrt{5}+3) }{5}  = \sqrt{5}+3
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Rearrange the equation so n is the independent variable.<br> m+1=-2(n+6)<br> m=
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Answer:

m=-2n-13

Step-by-step explanation:

m+1=-2(n+6)

m+1=-2n-12

   -1.        -1

--------------------

m=-2n-13

4 0
3 years ago
Read 2 more answers
Someone please help
AleksandrR [38]

Replace y with 31:

31 = 7x -4

Add 4 to both sides:

35 = 7x

Divide both sides by 7:

x = 5

Input x = 5

6 0
3 years ago
4 out of 9 dogs weigh less than 20 pounds. What is the decimal equivalent for the number of dogs weighing under 20 pounds?
iVinArrow [24]

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3 years ago
logan had a bank account balance of 287 he then deposit 35 and went on a shopping trip if he spends 78 what is his new balance a
gizmo_the_mogwai [7]
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6 0
4 years ago
Milk is a good source of many vitamins that can help us stay healthy. FDA recommends that the average vitamin A concentration fo
Lelechka [254]

Answer:

The degrees of freedom for this sample are 27.

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Step-by-step explanation:

The degrees of freedom for calculating the value of t are:

df=n-1=28-1=27

With 27 degrees of freedom and 95% confidence level, from a table we can get that the t-value is t=2.052.

The sample size to get a margin of error equal or less than 0.3656 can be calculated as:

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6 0
3 years ago
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