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rusak2 [61]
4 years ago
14

Find the lengths of AB and CD in the parallelogram if AB is 5x+2 and CD is 8x-7​

Mathematics
1 answer:
choli [55]4 years ago
8 0

Answer:

  17

Step-by-step explanation:

Opposite sides of the parallelogram AB and CD are the same length, so ...

  5x +2 = 8x -7

  9 = 3x . . . . . . . . add 7-5x

  3 = x

  AB = 5x +2 = 5·3 +2

  AB = 17 = CD

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\bf \qquad \textit{parabola vertex form}\\\\
\begin{array}{llll}
y=a(x-{{ h}})^2+{{ k}}
\end{array} \qquad\qquad  vertex\ ({{ h}},{{ k}})\\\\
-------------------------------\\\\

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\\\\\\
\begin{cases}
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