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Viefleur [7K]
4 years ago
12

The perimeter of the triangle.​

Mathematics
1 answer:
mel-nik [20]4 years ago
4 0
In order to find the perimeter, all we have to do is add all three of the sides:
x^2 + 3 + 2x + 5 + 2x = 29
x^2 + 4x + 8 = 29

Subtract 29 from both sides:
x^2 + 4x - 21 = 0

Factor:
(x + 7)(x - 3) = 0
{-7, 3}

3 can be the only possible length, since a length can't be a negative number.

2x = 6
2x + 5 = 11
x^2 + 3 = 12
-T.B.
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The expression can be simplified and written without negative exponents as...
Ksju [112]

\dfrac{(27y^{-2})^\frac{1}{3}}{y^{-\frac{2}{3}}}=(27)^\frac{1}{3}(y^{-2})^\frac{1}{3}:\dfrac{1}{y^\frac{2}{3}}=\sqrt[3]{27}y^{-2\cdot\frac{1}{3}}\cdot y^\frac{2}{3}\\\\=3y^{-\frac{2}{3}}\cdot y^\frac{2}{3}=3y^{-\frac{2}{3}+\frac{2}{3}}=3y^0=3\\\\\text{used:}\\\\(a\cdot b)^n=a^n\cdot b^n\\\\a^\frac{1}{n}=\sqrt[n]{a}\\\\a^{-n}=\dfrac{1}{a^n}\\\\(a^n)^m=a^{n\cdot m}\\\\a^n\cdot a^m=a^{n+m}\\\\a^0=1,\ a\neq0

6 0
4 years ago
Is the sentence Equivalent or non equivalent 12:24,50:100
djyliett [7]
<h3><u>Answer:</u></h3>
  • This sentence is Equivalent
<h3><u>Step-by-step explanation:</u></h3>
  • 12:24::50:100
  • => 12/24 = 50/100
  • => 1/2 = 1/2
<h3><u>Conclusion:</u></h3>

Therefore, the sentence is Equivalent.

Hoped this helped.

BrainiacUser1357

8 0
2 years ago
Please help!! I have no idea how to do this
Lelechka [254]

Answer:

i have also no idea but plz mark me as brainlist

3 0
3 years ago
Which of the following is the least? A.0.105B.0.501C.0.015D.0.15 I don't need an answer i need an explanation 
hodyreva [135]
I find the largest number by moving backwards. Tens, ones.......
In this case it would be 0.501, because it has the most tenths. So we cross it off
Then we find the new largest number
here it is 0.15 (the difference between that and 0.105 is that 0.105 does not have any hundredths, but the 5 is in the thousandths place.
Now we find the next one
Now it is 0.105
Then you only have one remaining answer, therefore 0.015 is the smallest answer!
7 0
4 years ago
I need help please help i'll mark brainliest
larisa [96]

Answer:

5

-- chance

9

you gotta count up all the possibilies (which is 9) then count up all the possible chances there is a rock (which is 5) and put it into fraction form. and there's your probability

5 0
3 years ago
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