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adell [148]
3 years ago
11

If DC=6x and DA=4x+18, find the value of x then, find AD

Mathematics
1 answer:
shepuryov [24]3 years ago
7 0

The value of x is 9 and AD is 54.

<u>Step-by-step explanation:</u>

From figure, if DC = AD, we can solve for value 'x'

                                    DC = AD

Given:

DC = 6 x

DA = 4 x + 18

Equating the values of both, we get

                  6 x = 4 x + 18

                  6 x - 4 x = 18

                  2 x  = 18

                  x = 9

So, the value of x is 9. By using this value of x, find AD

                      AD = 4 (9) + 18

                      AD  = 36 + 18

                      AD = 54

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