Answer:
<h2>The side DE is 4.2 units long, approximately.</h2>
Step-by-step explanation:
In the given triangle, side DE is the hypothenuse. So, we can use Pythagorean's Theorem, where both legs are 3 units long.

Therefore, the side DE is 4.2 units long, approximately.
Answer:
$63
Step-by-step explanation:
well 35 divided by 5 is 7 so 7 hr a day and 7 x 9 is 63 so $63 per day
In a right triangle, the square of the largest side is equal to the sum of the squares of the smaller sides, so if you plug the sides in to that equation, you should get zero if those sides form a right triangle.
B is the only option where this is true, so I believe set B defines a right triangle.