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SVEN [57.7K]
3 years ago
11

Whats 4/5×4/9 can it be simplify

Mathematics
2 answers:
sergey [27]3 years ago
5 0
4/5 times 4/9 can't be simplify.
The answer is 16/45 and can't be simplify because they don't have a common factor
expeople1 [14]3 years ago
3 0
  4/5 x 4/9 =16/45 the answer can not be simplified
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The answer would be 34
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Svetlanka [38]

Answer: 6+\sqrt{21}\ \text{and}\ 6-\sqrt{21}

Step-by-step explanation:

Given

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x^2-12x+15=0

Solving by completing the square method

\Rightarrow x^2-2\cdot 6\cdot x+15=0\\\text{add and subtract 36}\\\Rightarrow x^2-2\cdot 6\cdot x+15+36-36=0\\\Rightarrow x^2-2\cdot 6\cdot x+36+(-36+15)=0\\\text{using}\ (a-b)^2=a^2+b^2-2ab\\\Rightarrow (x-6)^2-21=0\\\Rightarrow (x-6)^2=21\\\Rightarrow x-6=\pm \sqrt{21}\\\Rightarrow x=6\pm \sqrt{21}

The solution set of the equation is 6+\sqrt{21}\ \text{and}\ 6-\sqrt{21}

6 0
3 years ago
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Triangle DEF has sides of length x, x+3, and x−1. What are all the possible types of DEF?
Natalija [7]

Triangle DEF is scalene

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6 0
3 years ago
What are the factors in the expression 4x(3x^2+5y)?
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Answer:

Step-by-step explanation:

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