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3 years ago

The angles of a triangle are 80°, 2x + 2°, and 5x°.

Mathematics

2 answers:

Amiraneli [1.4K]3 years ago

6 0

80 + 2x+2 +5x = 180
7x = 180 - 80 - 2
7x = 198
x = 14

Bezzdna [24]3 years ago

5 0

The sum of interior of all angles in a triangle = 180
Given 3 angles = <span>80°, 2x + 2°, and 5x°
To find x:

</span><span>80°+ 2x + 2 + 5x = 180
7x + 82 = 180
7x = 98
x = 14

answer
x = 14 </span>

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$12C5 = \frac{12!}{5! (12-5)!}=\frac{12!}{5! 7!} = \frac{12*11*10*9*8*7!}{5! 7!}= \frac{12*11*10*9*8}{5*4*3*2*1}=792$

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