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Valentin [98]
3 years ago
11

Whats 1+8............ ... ​

Mathematics
1 answer:
Soloha48 [4]3 years ago
4 0

Answer:

9

Step-by-step explanation:

ez points bruh

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75.398

Step-by-step explanation:

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PLEASE HELP!! I NEED MATHEMATICIANS ON THIS POST!!
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Darren and barb each tried to evaluate 6(2) + 4 ÷ 2 who elaluated the expression correctly?
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Read 2 more answers
The points A BC :(2, 2,1), :(1,1,3), :(2,0,5) − are the vertices of a right triangle. The radius of the sphere with center at th
ElenaW [278]

Answer:

r=1

Step-by-step explanation:

First we need to know the length of each side of the triangle, so we use the formula of the vector modulus:

|AB|= \sqrt{(b_{1}-a_{1})^{2}+(b_{2}-a_{2})^{2}+(b_{3}-a_{3})^{2}

By doing so, we find:

|AB|=\sqrt {6}\\|BC|=\sqrt {6}\\|AC|=2\sqrt {5}

With this we know that the triangle is not right, but, we assume the longest side as the hypotenuse of the problem.

As we have two equal sides, we know that the line between point |AB| and the center of the hypotenuse is perpendicular, therefore, we can calculate it using Pythagoras theorem:

|BC|^{2}=r^{2}+(\frac{|AC|}{2})^{2}\\\\r^{2}=|BC|^{2}-(\frac{|AC|}{2})^{2}\\\\r^{2}=(\sqrt{6})^{2}- (\frac{2\sqrt{5}}{2})^{2}\\\\r^{2}=6-5=1\\r=1

4 0
2 years ago
Neeeeeed the help please
lions [1.4K]
The correct answer is -5/7. Hope this helps.
8 0
3 years ago
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