What is the value of x?

x = 4√5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Trigonometry

Pythagorean Theorem: a² + b² = c²

Step-by-step explanation:

Step 1: Define

We are given a right triangle. We can use Pythagorean Theorem.

a = 19

b = x

c = 21

Step 2: Find x

Substitute:                    19² + x² = 21²Isolate x term:               x² = 21² - 19²Evaluate:                       x² = 441 - 361Subtract:                       x² = 80Isolate x:                       x = √80Simplify:                        x = 4√5

And we have our final answer!

Where is the qeustion