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Sonbull [250]
3 years ago
10

Aswer to expand 3(n+7)

Mathematics
2 answers:
Yakvenalex [24]3 years ago
6 0
3n+21 because of distributive property.
Charra [1.4K]3 years ago
5 0
3n + 21
n=7
................
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right

Step-by-step explanation:

The sum of all three angle measures in a triangle will always equal 180 degrees. So, if you subtract 63 and 27 from 180 you will have your third angle measure, which is 90.

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

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Step-by-step explanation:

7 -sqrt(10)

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

3 sqrt(5) *sqrt(3)

7 -sqrt(10)

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

3 sqrt(15)

Multiply the top and bottom by sqrt(15)/ sqrt(15)

7 -sqrt(10)               sqrt(15)

----------------------- * ------------

3 sqrt(15)                 sqrt(15)


(7 -sqrt(10))* sqrt(15)

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

3 *15

Distribute


7sqrt(15) - sqrt(150)

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sqrt(ab) =sqrt(a) sqrt(b)

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7sqrt(15) - sqrt(25)sqrt(6)

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

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7sqrt(15) - 5sqrt(6)

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45

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