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tatyana61 [14]
2 years ago
7

How do you simply these square roots?

Mathematics
2 answers:
dexar [7]2 years ago
4 0
So square root of 5 Times Square root of 5 equals square root of 25 which is 5. Do the same for the others.
3)8
5)3
AleksandrR [38]2 years ago
3 0
1st . 2.23607
2nd 2.82843
3rd .1.73205
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3x + 1 = 5X-13 if anyone knows what to do can they please help ​
Elza [17]

Answer:

  x = 7

Step-by-step explanation:

First, you look at the equation. Identify the locations of variable terms (both sides of the equal sign) and the constant terms (both sides of the equal sign).

If there are any parentheses, it is a good idea to use the distributive property to eliminate them. Here, there are none.

I like to start by subtracting <em>the variable term with the smallest coefficient</em>. Here, that is 3x, so we add -3x to both sides of the equation.

  3x -3x +1 = 5x -3x -13

  1 = 2x -13 . . . . . . . . . . . . combine like terms

Now, we have the only variable term on one side of the equal sign. We want it by itself, so we need to make the -13 go away. We do that by adding its opposite to both sides of the equation:

  1 +13 = 2x -13 +13

  14 = 2x . . . . . . . . . . . . combine like terms

Finally, we want the coefficient of 2 in the x-term to disappear. We make that happen by multiplying both sides of the equation by 1/2, the reciprocal of that coefficient.

  (1/2)(14) = (1/2)(2x)

  7 = x . . . . the solution

__

It is generally a good idea to <em>check your work</em> by seeing if your solution value satisfies the equation:

  3(7) +1 = 5(7) -13 . . . . put 7 where x is in the original equation

  21 +1 = 35 -13

  22 = 22 . . . . . . x = 7 is the solution

_____

<em>Additional comment</em>

By subtracting 3x from 5x, the result is 2x with a positive coefficient. We could solve the equation just as easily by subtracting 5x from 3x. That result would be ...

  -2x +1 = -13

Subtracting 1 would give

  -2x = -14

and you would multiply by -1/2 to get x=7. I personally like to avoid having this many minus signs show up in the problem. That is why I choose to subtract the x-term with the smallest coefficient.

5 0
3 years ago
Ayuda 7×9÷2=<br><br><br><br>note : btw how to get rid of this ad ?​
JulijaS [17]

Step-by-step explanation:

7×9÷2

By using the rule of BODMAS , we get

7×9÷2

7×4.5

31.5

5 0
2 years ago
Read 2 more answers
9. Your bank account has a balance of $145.67. You make a withdrawal
Nataliya [291]
There is $103.15 in your bank account.
4 0
3 years ago
Marco bought $30 worth of football cards. If he bought 12 packs of cards, how much does each pack of cards cost?
Mandarinka [93]

Answer:

2.5

Step-by-step explanation:

30/12=2.5

7 0
2 years ago
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How many lines of symmetry?
Alex73 [517]

Answer:

i think 4

sorryif its wrong

3 0
2 years ago
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