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= √(84)`, which can be rewritten as
`2 √(21)` .