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sesenic [268]
2 years ago
5

the difference between the squares of two numbers is 3. Twice the square of the first number increased by the square of the seco

nd number is 9. find the numbers.
Mathematics
1 answer:
Maurinko [17]2 years ago
8 0

Answer:

The number are \sqrt{6} and \sqrt{6} .

Step-by-step explanation:

Given as :

The difference between the squares of two number = 3

And , Twice the square of the first number increased by the square of the second number is 9

Now, Let The first number = F

And The second number = S

So , According to question

F² - S² = 3                  .......A

2 F² - S² = 9               ........B

Now, solving the equations

( 2 F² - S² ) - ( F² - S² ) = 9 - 3

Or, ( 2 F² - F² ) + ( S² - S² ) = 6

Or, F² + 0 = 6

∴   F = \sqrt{6}

Putting the value of F in eq A

So, (  \sqrt{6} )² - S² = 3  

Or, 6 - 3 = S²

Or, S² = 3

∴   S = \sqrt{3}

So, The number are \sqrt{6} , \sqrt{6}

Hence The number are \sqrt{6} and \sqrt{6} . Answer

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alexandr1967 [171]

Answer:

35 ia the answer sorry if im wrong

7 0
3 years ago
21 is what percent of 40
-Dominant- [34]
To solve for this, set up a proportion.
21/40 = x/100.
Cross multiply the fraction's numerators with the denominators; 
21 x 100, 40 and x.
2100/40x.
Divide both numbers by 40 to get x.
2100/40 = 52.5
21 is 52.5% of 40.
I hope this helps!
5 0
3 years ago
HELP ASAPP 30 points!!!!!<br> Which number is rational?
Anna35 [415]

Answer:

d

Step-by-step explanation:

because its a whole number as in the square root is 4

6 0
2 years ago
Evaluate:<br> . C=4x? rind the value of c- given thatx = 16<br> pour
Butoxors [25]

Answer:

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c-4(16)

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Step-by-step explanation:

6 0
3 years ago
Limited time . 10 points
AfilCa [17]

Answer:

Therefore the value of x is

x=1\pm\sqrt{19}i

Step-by-step explanation:

Given:

x^{2}+20=2x which is

x^{2}-2x+20=0

To Find:

x = ? using Quadratic Formula

Solution:

For a Quadratic Equation ax² + bx + c = 0 , Formula Method is given as

x=\dfrac{-b\pm\sqrt{b^{2}-4ac}}{2a}

On Comparing with above we get

a=1\\b=-2\\c=20

Substituting a , b , c in Formula method we get

x=\dfrac{-(-2)\pm\sqrt{(-2)^{2}-4(1)(20)}}{2\times 1}\\\\x=\dfrac{2\pm\sqrt{-76}}{2}\\\\x=\dfrac{2\pm2\sqrt{19}i}{2}\\Dividing\ by\ 2\ we\ get\\\\x=1 \pm\sqrt{19}i

Therefore the value of x is

x=1\pm\sqrt{19}i

8 0
3 years ago
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