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zacharyminnick123
08.11.2019 •
Mathematics
The function f(x) = –x2 + 60x – 116 models the monthly profit, in dollars, a shop makes for repairing windshields, where x is the number of windshields repaired, and f(x) is the amount of profit. part a: determine the vertex. what
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Ответ:
f(x)+116=-x^2+60x
-f(x)-116=x^2-60x
-f(x)-116+900=x^2-60x+900
-f(x)+784=(x-30)^2
f(x)-784=-(x-30)^2
f(x)=-(x-30)^2+784
So the vertex is the point (30, 784)
Or you could commit to memory that the vertex for a parabola is always:
( -b/(2a), (4ac-b^2)/(4a) )
Ответ:
70°
Step-by-step explanation:
To find the median, we first order the data from least to greatest:
44, 54, 55, 55, 55, 56, 64, 65, 68, 72, 78, 79, 81, 81, 82, 84, 88, 88
Next we find the middle value. This is between 68 and 72; we average these to find the median:
(68+72)/2 = 140/2 = 70