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pashok25 [27]
2 years ago
9

If the area of a square is 100 cm2, what is the perimeter?​

Mathematics
1 answer:
Vitek1552 [10]2 years ago
6 0

Answer:

40

Step-by-step explanation:

To find the perimeter, first we need to find the side lengths.

If 100 cm is the area then we need to find what number squared is 100

10 x 10 = 100

So 10 is the side length. P= s + s + s +s

10 + 10 + 10 +10 = 40

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zzz [600]
5885

Why?: Because, when you multiply 5 the product will always end with a 5 or a 0.

Hope this helps. Report me if I am wrong,bye!
5 0
3 years ago
What is the additive inverse of 56? it would be -56 right?
Nadya [2.5K]
The additive inverse of -5 is +5 or 5.  So yes, i do believe that the additive inverse of 56 is -56 or negative 56.
3 0
3 years ago
Simplify: √(√21 -2√7)^2<br> WILL AWARD BRAINLIEST TO THE CORRECT ANSWER!!
Elena-2011 [213]

Answer:

Solving the expression: \sqrt{(\sqrt{21}-2\sqrt{7}  )^2} we get \sqrt{21}-2\sqrt{7}

Step-by-step explanation:

We need to solve the expression: \sqrt{(\sqrt{21}-2\sqrt{7}  )^2}

We know that \sqrt{x} = x^{\frac{1}{2}}

Solving:

\sqrt{(\sqrt{21}-2\sqrt{7}  )^2}\\=((\sqrt{21}-2\sqrt{7}  )^2)^\frac{1}{2}

We know that (a^2)^\frac{1}{2}=a

= \sqrt{21}-2\sqrt{7}

So, solving the expression: \sqrt{(\sqrt{21}-2\sqrt{7}  )^2} we get \sqrt{21}-2\sqrt{7}

4 0
3 years ago
How do you subtract 25% off of $8?
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25% is also equal to 1/4. One fourth of 8 is 2. Now, check your answer: 2 times 4 is 8. Hope that helps. :)

8 0
3 years ago
HELP ASAPPPPPP WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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Answer:

The overbar indicates the digit repeats forever. It is worth remembering that

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Step-by-step explanation:

3 0
2 years ago
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