Question

Help is needed please help

Answer 1

You have to do Pythagorean theorem:

`a^(2) +b^(2)  = c^(2)`

"a" and "b" are the legs. In this case 7 is a leg and x is a leg

"c" is the hypotenuses, which is 19 here

so...

a = 7

b = x

c = 19

Plug the numbers above into the equation:

`7^(2) + x^(2) = 19^(2)`

`49 +x^(2) = 361`

Isolate x by subtracting 49 to both sides:

`(49-49) + x^(2) = 361 - 49`

`x^(2) = 312`

To solve for x you have to take the square root to both sides of the equation:

`\sqrt{x^(2) } = √(312)`

x = 17.6635

x = 17.7

Hope this helped!