3 years ago

40:14

Mathematics

1 answer:

Rashid [163]3 years ago

7 0

Answer:

x LE 6.3.

Step-by-step explanation:

For an obtuse triangle

c^2 > a^2 + b^2 where c is the longest side. So:

20^2 > x^2 + (3x)^2

400 > 10x^2

x^2 < 40

x < 6.324

x < 6.3.

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