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LekaFEV [45]
3 years ago
5

HELP!!! The length of the unknown side is _____. 6.7 7 10.8 1.73

Mathematics
2 answers:
lakkis [162]3 years ago
7 0

Answer:

c = 3\sqrt{13}

Step-by-step explanation:

<u>Step 1:  Use Pythagorean theorem</u>

a^2 + b^2 = c^2

PLUG IN

(9)^2 + (6)^2 = c^2

81 + 36 = c^2

<em>117 = c^2</em>

<em />

<u>Step 2:  Square root both sides</u>

<u />\sqrt{117} = \sqrt{c^2}

\sqrt{3^2*13} = c

3\sqrt{13}<em> = c</em>

<em />

Answer: c = 3\sqrt{13}

agasfer [191]3 years ago
4 0

Answer:

c = \sqrt{117}

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

c² = 9² + 6² = 81 + 36 = 117 ( take the square root of both sides )

c = \sqrt{117} ≈ 10.8 ( to 1 dec. place )

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