What is the value of y? answer choices are: 3√3 6√3 9√3 12√3

asked Nov 20, 2018 10.3k views

4 votes

What is the value of y?
answer choices are:
3√3
6√3
9√3
12√3

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6 votes

A. Is your answer But i think ion know

TanThien answered Nov 23, 2018

8.2k points

6 votes

Pythagoras's theorem

y^2+6^2=|MN|^2

, y > 0

$y^2+36=(9+3)^2 \\\\ y^2+36=144 \\\\ y^2=144 - 36 \\\\ y^2=108 \\\\ y=√(108)=√(36 * 3) \\\\ y=6\sqrt3$

Rafael Xavier answered Nov 26, 2018