Answer:
19.365
Step-by-step explanation:
The Pythagoreum Theorum tells us that:
a² + b² = c²
where a and b are the legs and c is the hypotenuse.
BC is a leg; we'll lable it a.
AC is the hypotenuse thus labled c.
Plugging their lengths into the above formula will solve for the missing leg length.
5² + x² = 20²
25 + x² = 400
x² = 375
✓x = ✓3 x (5 x 5) x 5
x = 5✓15
x = 19.365
Answer:
The answer is x = y² .
Step-by-step explanation:
In order to make x the subject, you have to square to both sides to get rid of square root :
![y = \sqrt{x}](https://tex.z-dn.net/?f=y%20%3D%20%20%5Csqrt%7Bx%7D%20)
![{y}^{2} = {( \sqrt{x}) }^{2}](https://tex.z-dn.net/?f=%20%7By%7D%5E%7B2%7D%20%20%3D%20%20%7B%28%20%5Csqrt%7Bx%7D%29%20%7D%5E%7B2%7D%20)
![{y}^{2} = x](https://tex.z-dn.net/?f=%20%7By%7D%5E%7B2%7D%20%20%3D%20x)
![x = {y}^{2}](https://tex.z-dn.net/?f=x%20%3D%20%20%7By%7D%5E%7B2%7D%20)
(4,2) is the answer i think
Step-by-step explanation: 5