Question

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Answer 1

Answer: 15.6

Step-by-step explanation:

Equation: A^2+B^2=C^2

Step one: 9^2=81

Step two: 18^2=324

Step Three: 324-81=243

Step four: square root the 243 which gives you the answer.

Answer 2

Answer:

x = 15.58845727

Step-by-step explanation:

use the pythagorean theorem. $a^{2} + b^{2} = c^{2}$

fill in the 2 digits you know. $9^{2} + x^{2} = 18^{2}$

then simplify.  $x^{2} = 18^{2} - 9^{2}$ which is $x^{2} = 243$

and you get $\sqrt{x^{2} } = \sqrt{243}$

you can simplify $x = 15.58845727$