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muminat
3 years ago
8

Which number is irrational -9/5 , square root of 5 , 7/3 or square root of 9

Mathematics
1 answer:
miv72 [106K]3 years ago
8 0

sry if my answer is wrong but I think it is the square root of nine

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Can someone please help with this math question:)
Bingel [31]

<u>Solution</u><u>:</u>

The rationalisation factor for \frac{1}{ a -  \sqrt{b}  } is a + \sqrt{b}

So, let us apply it here.

\frac{1}{5 -  \sqrt{2} }

The rationalising factor for 5 - √2 is 5 + √2.

Therefore, multiplying and dividing by 5 + √2, we have

=  \frac{1}{5 -  \sqrt{2} }  \times  \frac{5 +  \sqrt{2} }{5 +  \sqrt{2} }  \\  =  \frac{5 +  \sqrt{2} }{(5 -  \sqrt{2})(5 +  \sqrt{2} ) }  \\  =  \frac{5 +  \sqrt{2} }{ {(5)}^{2} - ( \sqrt{2})^{2}   }  \\  =  \frac{5 +  \sqrt{2} }{25 -  2}  \\  =  \frac{5 +  \sqrt{2} }{23}

<u>Answer:</u>

<u>\frac{5 +  \sqrt{2} }{23}</u>

Hope you could understand.

If you have any query, feel free to ask.

5 0
2 years ago
Read 2 more answers
PLZ HELP
nasty-shy [4]

Answer:

do u need other coordinates?

if so B'(1,-1)

C'(1,4)

D'(5,6)

the formula is (-x,y)

hope it helps :)

7 0
2 years ago
Which equation has infinitely many solutions?
Umnica [9.8K]

Answer: B

Step-by-step explanation:

\dfrac{10x+8}{2} =5x+4\ cross\ products\\\\10x+8=10x+8\\\\0x=0\\

Every real is solution of the equation .

8 0
2 years ago
What is (9^4)^2?<br> And what is (6^1)^0?
Alexandra [31]

Answer:

hhhhgvguhvibjhvgyvv

Step-by-step explanation:

bhufyhg88

8 0
3 years ago
You roll a standard number cube once. Find p (number lass than 7).
wel

Answer:

the probability of getting a number less than 7 when rolling a standard dice is 100%

Step-by-step explanation:

7 0
3 years ago
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