Question

I don’t understand this I would like for someone to help me real fast

Answer 1

Answer:

16.2

Step-by-step explanation:

$a^{2} + b^{2} = c^{2}$

10 squared = 100

19 squared = 361

361 - 100 = 261

square root of 261 = 16.2

$10^{2} + 16.2^{2} = 19^{2}$ is the equation

hope this helps

Mark brainliest please

Answer 2

Answer:

They say.. use Pythagorean theorem formula.... what is it?  :)  you have to remember it.    I'll put it below in case you don't remember  

Step-by-step explanation:

$C^{2}$ = $A^{2}$ +$B^{2}$

and I know, you're thinking..... what's the deal with all the letters... how do I add those up? :D .....  you are right... you can't add letters... the letters are just the variables... or places holders for numbers... you can put many different numbers into each of them but... the relationship.... which is made by the equal sign.. must hold true for any numbers you put in for the variables.... sooo.. like this.. for your particular answer

$19^{2}$ = $10^{2}$ + $y^{2}$  

( notice I've put in a  " y " , where there is a B in the formula above but that's just a letter... again.. which is just a variable... the place holder for a number...  soooo..... )

361 = 100 + $y^{2}$        ( subtract 100 from each side of the " = "  )

261 = $y^{2}$                 ( to undo the square on the wye... square root both sides)$\sqrt{261}$ = y  

my calculator tells me that $\sqrt{261}$ = 16.15549442

they say round to the nearest 10th... soooo..

16.2  is  the answer  :)