Solve 12x^2+4x-3=0 by completing the square.
1 answer:
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Answer:
16 m
Step-by-step explanation:
The situation can be solved by proportion of corresponding sides in 2 right triangles.
let x be the length of shadow cast by oak tree, then
=
( cross- multiply )
9x = 144 ( divide both sides by 9 )
x = 16
Length of shadow is 16 m