Well a clock has twelve hours that make up a full circle, or 360 degrees, so you divide 12 by 360 then multiply by the degree, which in this case is 81.81 and that's the number of hours. (You figure out the minutes by looking at the decimal)
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Step-by-step explanation:
hello :
a(x) = 3x - 12 and b(x) = x-9, so
a[b(x)]=a(x-9) =3(x-9)-12
a[b(x)]=3x-9-12
a[b(x)]=3x+21
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Can you take picture, please?
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The answer is either (3) or (4) because drawing a line of best fit and finding its gradient is going to give you a negative answer
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c. how late it is in the evening is a function of the length of time the shutter needs to stay open.
