Mathematics, 16.10.2019 21:30 jasminemonae62

Parallelogram f c d e is shown. sides d c and f e are parallel, and sides f c and e d are parallel. the length of c d is 4 r + 19, the length of d e is 8 r + 3, and the length of f c is 9 r minus 6.
what is the value of r?
what is the length of segment ef? units

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Parallelogram f c d e is shown. sides d c and f e are parallel, and sides f c and e d are parallel....