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tigry1 [53]
3 years ago
10

If bcd~gef find value of x

Mathematics
1 answer:
ddd [48]3 years ago
3 0

Answer:

x = 13

Step-by-step explanation:

Given

See attachment

Required

Find x

From the attachment, we have:

BC = x + 4

BD = 2x - 7

GE = 51

GF = 57

Because both triangles are similar, we use the following equivalent ratios:

BC : BD = GE : GF

Substitute values for each parameter

x + 4 : 2x- 7 = 51 : 57

Convert to fractions

\frac{x + 4}{2x- 7} = \frac{51 }{ 57}

Simplify the right-hand side

\frac{x + 4}{2x- 7} = \frac{17}{19}

Cross Multiply

19(x + 4) = 17(2x - 7)

19x + 76 = 34x - 119

Collect Like Terms

19x - 34x = -76 - 119

-15x = -195

Solve for x

x = \frac{-195}{-15}

x = 13

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