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50 POINTS: Please help thank you so much!! (Image attached) The polygons are similar. Find the values of the variables.

I know from the answer key that the answers are x=12
and y=8, but I'm not sure how to get there...​

50 POINTS Please Help Thank You So Much Image Attached The Polygons Are Similar Find The Values Of The VariablesI Know From The Answer Key That The Answers Are class=

Sagot :

Answer:

y = 8  

x = 12        

Step-by-step explanation:

Corresponding sides are in proportion when the polygons are similar.

(1)      7/3.5 = 3y/x                    (2)    7/3.5 = (x + 4)/y

            2 = 3y/x                                    2 = (x + 4)/y

          2x = 3y                                       2y = x + 4

          2x - 3y = 0                                -x + 2y = 4   Multiply by 2 and add to (1)

         -2x + 4y = 8

                    y = 8                               -x + 2(8) = 4

                                                           -x + 16 = 4

                                                                 -x = -12

                                                                   x = 12

There you go.  Hope you can follow.                                                                          

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