USING A2+B2=c2
For the following right triangle, find the side length x.
DELL

Step-by-step explanation:

Pythagorean theorem: , where c is the longest side (hypotenuse), a and b are the other sides of the right angled triangle.

In this question, c is labelled as .

Therefore, we can use the theorem to find .

So, substitute in the other sides and solve for .

We can see the answer is correct because it is meant to be the largest side and .

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.