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katen-ka-za [31]
3 years ago
15

Prove that 2 root 3 divided by 5 is irrational​

Mathematics
1 answer:
Arlecino [84]3 years ago
6 0

\sqrt{x} 3 is a irrational number; whatever you do to a irrational number except subtract itself or divide by itself or a multiple of itself will always result in another irrational number.

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Please Help me.<br> .<br> .<br> .<br> .<br> .
avanturin [10]

Answer:

D

Step-by-step explanation:

x^2+2x-5-(-3x^2-4x+1)

x^2+2x-5+3x^2+4x-1

4x^2+6x-6

6 0
3 years ago
Read 2 more answers
Select the equation that contains the point (3, -9), and in which the graph of the line has a positive slope.
Kamila [148]
First thing to do is to solve each of these for y.  The first one is y=-4x-3; the second one is y=4x-21; the third one is y=4x+21; the fourth one is y=-4x+3.  From that you can tell the positive slopes are found in the second and third equations.  Those are the ones we will test now for the point (3, -9).  y=-9 and x=3, so let's fill in accordingly.  The second equation filled in is -9=4(3)-21.  Does the left side equal the right when we do the math?  -9=12-21 and -9=-9.  So the second one works.  Just for the sake of completion, let's do the same with the third: -9=4(3)+21.  Does -9=12+21?  Of course it doesn't.  Our equation is the second one above, y+9=4(x-3).
7 0
3 years ago
Can Someone plz help me with this question? <br> I will mark brainliest
Gala2k [10]
The answer to your question is

No
8 0
2 years ago
Find 90% of $800 [1]
laiz [17]

Answer:

$720.00

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Someone help me solve this and could you explain why too?
yulyashka [42]

Answer:

3.5

Step-by-step explanation:

Well its easiest to just plug in the answers and see like 2 times 3.5 is 7.

Another way is saying 7 divided by 2 is 3.5

then u check to make sure its the same for all the numbers.

Which it is because 21 divided by 6 is also 3.5 :)

5 0
3 years ago
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