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Lelu [443]
3 years ago
13

Find the missing side of the triangle.​

Mathematics
2 answers:
IrinaVladis [17]3 years ago
8 0

Answer:

2\sqrt{10\\}

Step-by-step explanation:

Because this is a right triangle, we have:

x^{2} + 3^{2} = 7^{2} (Pytago)\\x^{2} + 9= 49\\x^{2} =40\\x=\sqrt{40} \\x=2\sqrt{10}

lys-0071 [83]3 years ago
4 0

Answer:

x=√40

Step-by-step explanation:

In above figure,

h=7

b=3

p=x=?

Now,

by Pythagoras theorem,

p =   \sqrt{ {h }^{2}   - {b}^{2} }  \\  =   \sqrt{ {7}^{2}  -  {3}^{2} }  \\  =  \sqrt{49 - 9}  \\  =  \sqrt{40}

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