Your answer is 7^(- 2) or 
or 
A student had taken 7 tests and received scores of 88, 73, 81, 83, 79, 73, and 97.
1 answer:
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Answer:
x = 10
Step-by-step explanation:
Since the triangles are similar the ratios of corresponding sides are equal
=
, that is
=
( cross- multiply )
20(4x + 2) = 84x
80x + 40 = 84x ( subtract 80x from both sides )
40 = 4x ( divide both sides by 4 )
x = 10