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SpyIntel [72]
3 years ago
7

Wich is the unknown number? which property did u use?

Mathematics
2 answers:
Gwar [14]3 years ago
3 0
The answer is 9. because... (8+9) + 32= 49
Airida [17]3 years ago
3 0
The answer is 9 it is actually very easy just use the operations there. Also do you go to Ps68Q ?
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CAN SOMEONE MULTIPLY THIS PLEASE, ITS URGENT
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Let's factorise it :

\: {\qquad  \dashrightarrow \sf   ( {x}^{3}   -  5)(x + 3)  }

\: {\qquad  \dashrightarrow \sf    {x}^{3} (x + 3) + [-5(x + 3)]  }

Using Distributive property we get :

\: {\qquad  \dashrightarrow \sf    {x}^{3} +  {3x}^{3}   + ( - 5x - 15)  }

\: {\qquad  \dashrightarrow \sf    {x}^{3} +  {3x}^{3}   - 5x - 15 }

\: {\qquad  \dashrightarrow \sf    4{x}^{3}  - 5x - 15 }

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Therefore,

\: {\qquad  \dashrightarrow \sf   ( {x}^{3}   -  5)(x + 3)   =4{x}^{3}  - 5x - 15}

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An altitude of a triangle is a line or segment that passes through a vertex of the triangle and is bisecting <span>to the line containing the opposite side.

</span>"Bisect<span>" means to divide into two equal parts which is true for the altitude of a triangle.</span>
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Answer:

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