Two numbers have a sum of 68 and a difference of 46
2 answers:
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Answer:
Height of the building = 115.4 ft.
Step-by-step explanation:
Height of building = AB + 46.4 + CD + 30.5
By applying Pythagoras theorem in ΔABP,
(26)² = (10)²+ (AB)²
676 - 100 = AB²
AB² = 576
AB = 24 ft
By applying sine rule in ΔCDE,
cos(60°) =
CD = CE ×
CD =
CD = 14.5 ft
Total Height = 24 + 46.4 + 14.5 + 30.5
= 115.4 ft
The coefficient of determination can be found using the following formula:
Using a Statistics calculator or an online tool to work with the data we were given, we get
So the best aproximation of r² is 0.861
