D. 11,475 (135/200= .675 =67.5 %) (67.5% x 17,000 = 11,475)
Okay so i cant figure out the first one, but the second one looks like -7:3
AB is the longest side, so ∠C is the largest angle.
use law of cosine: 16²=9²+12²-2*9*12cosC
216cosC=81+144-256=-31
cosC=-0.14352
C≈98
Here you have to use proportionality,
1 feet is 12 inches so 40 feets is 480 inches
Then the real locomotive is 480/16=30 times wider then the model
And then a window on the real locomotive is 30 times wider then the model..
4x4+7x2+30
16+14=30
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