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ycow [4]
3 years ago
5

What is the value of x?

Mathematics
1 answer:
timama [110]3 years ago
6 0

Answer:

x = +5

Step-by-step explanation:

The triangles ADB and BDC are similar.  Thus it is possible to write an equation of ratios and solve it for x:

 x       10

----- = -------

10       4x

Cross-multipying, we get:

4x^2 = 100, which yields x = +5

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