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sesenic [268]
3 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]3 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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6x + 11 = 21<br> Help I’m on a quiz and this question is so confusing
Westkost [7]

Answer:

Step by Step Solution

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    6*x+11-(21)=0  

Step by step solution :

STEP

1

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Pulling out like terms

1.1     Pull out like factors :

  6x - 10  =   2 • (3x - 5)  

Equation at the end of step

1

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STEP

2

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Equations which are never true:

2.1      Solve :    2   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation:

2.2      Solve  :    3x-5 = 0  

Add  5  to both sides of the equation :  

                     3x = 5

Divide both sides of the equation by 3:

                    x = 5/3 = 1.667

One solution was found :

x = 5/3 = 1.667

3 0
3 years ago
8. Derek was observing the change in water levels in his fish pond. The table below show the change in water levels of the fish
Alla [95]

Answer:

H. 2 3/4

Step-by-step explanation:

  • DATE                         >> WATER LEVEL CHANGE (inches)
  • August 25                  >>  -0.75
  • September 8              >>  -1 3/ 8
  • September 22            >>  2.5
  • October 6                    >>  -1/2
  • October 20                 >>  1 7/8

<u>Total change:</u>

  • 1 7/8 - (-0.75) =
  • 1+ 7/8 + 3/4 =
  • 1 + 7/8 + 6/8 =
  • 1 + 13/8 =
  • 1+ 1 5/8 =
  • 2 5/8

The closest answer option is H. 2 3/4

8 0
3 years ago
The fit line equation is Y = -2.61x +152.51, where x is variable 1 and Y is variable 2. According to the equation, what is the e
egoroff_w [7]

The expected value of y when x is equals to 45 in the equation is 35.06

<h3>How to find variable from an equation?</h3>

The equation is given as follows;

y = -2.61x + 152.51

where

  • x = variable 1
  • y = variable 2

Therefore,

when

x = 45

y = -2.61x + 152.51

y = -2.61(45) + 152.51

y = - 117.45 + 152.51

y = 35.06

learn more on equation here: brainly.com/question/14279419

#SPJ1

5 0
2 years ago
Why does each number only have one square root?
Tamiku [17]

Answer:

it gets  multiplied by the value of the root .that is just more concise way of writing it .

Step-by-step explanation:

3 0
3 years ago
Find an irrational number and rational number between 5.2 and 5.5
alexandr1967 [171]
<span>rational number between 5.2 and 5.5 is 53/10 (cause 53/10 = 5.3)

</span>irrational number between 5.2 and 5.5 is √29 (cause <span>√29 = 5.385164....)</span>
8 0
3 years ago
Read 2 more answers
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