Question

Question is in the picture

Answer 1

Answer:

49.4 (rounded to the nearest tenth)

Step-by-step explanation:

You need to use the Pythagorean theorem -> $a^{2} + b^{2} = c^{2}$ -> $c^{2}$ is the hypotenuse

         $a^{2} + b^{2} = c^{2}$

$(7x + 7)^{2}$ + $5x$ = $c^{2}$

(7x$7)^{2}$ + (5x7) = $c^{2}$

      $49^{2}$ + 35 = $c^{2}$

          2436 = $c^{2}$

         $\sqrt{2436}$ = c

                 c = 49.355850717

                 c = 49.4 (round to the nearest tenth)

hope this helps, sorry if it is not right