The black triangles are similar. Find the value of x. 28
х
12 d
21
The value of x is
(just type a number in the box)
please help!!

answer: -0.5 would be the most likley outcome

step-by-step explanation:

x = 2

step-by-step explanation:

if sr parallel to ba then the sides bc and ac are in proportion, that is

= ← substitute values

= ( cross- multiply )

27x = 6(4x + 1)

27x = 24x + 6 ( subtract 24x from both sides )

3x = 6 ( divide both sides by 3 )

x = 2

answer is because 4×10=40

and 98×4= is 392

40,392

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