Question

I need help on this anyone plz. no joking around tho.

Answer 1

For this you will be using the pythagorean theorem, aka $leg^2+leg^2=hypotenuse^2$ .

Firstly, plug in 4 and x into the leg variable and 10 into the hypotenuse variable: $4^2+x^2=10^2$ .

Next, solve the exponents, and you should get $16+x^2=100$

Subtract 16 on each side to get $x^2=84$

Then square root each side to get $x= \sqrt{84}$, which can be rewritten as $2 \sqrt{21}$ .