camrynhelm8278
29.08.2020 •
Mathematics
Find the value of x. Round you answer to the nearest tenth.
20
18
X
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Ответ:
21.9
Step-by-step explanation:
The altitude of an isosceles triangle bisects the base. So, x represents the hypotenuse of a right triangle with legs of 9 and 20. It can be found using the Pythagorean theorem:
x^2 = 9^2 +20^2 = 81 +400
x = √481 ≈ 21.932
The length x is about 21.9 units.
Ответ: