Set this up as a proportion with the model stuff on top and actual building stuff on bottom. 
. Cross multiply to get x = 780. The actual building is 780 inches. In feet that is 65.
If f(x)=2+abs(x-3) for all x, what's the value of the derivative f'(x) at x=3?
1 answer:
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Answer:
b ≈ 9.5, c ≈ 14.7
Step-by-step explanation:
Using the Sine rule in Δ ABC, that is
=
, substitute values
=
( cross- multiply )
b × sin23° = 7 × sin32° ( divide both sides by sin23° )
b = ≈ 9.5 ( to the nearest tenth )
Also
=
=
( cross- multiply )
c × sin23° = 7 × sin125° ( divide both sides by sin23° )
c = ≈ 14.7 ( to the nearest tenth )