Answer:
a x = 14.3 units
Step-by-step explanation:
The Pythagorean theorem is
a^2 +b^2 = c^2 where a and b are the sides and c is the hypotenuse
x^2 + 14^2 = 20^2
x^2 +196 = 400
Subtract 196 from each side
x^2+196-196 = 400-196
x^2 =204
Take the square root of each side
sqrt(x^2) = sqrt(204)
x =14.28285686
To the nearest tenth
x = 14.3 units
