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Colt1911 [192]
2 years ago
9

Select all expressions that are equivalent to 5n-30

Mathematics
1 answer:
mamaluj [8]2 years ago
8 0

Answer: everything EXCEPT 5(n-30)

Step-by-step explanation:

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Help please! 16 points
emmainna [20.7K]

Answer:

3

Step-by-step explanation:

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Which number is equivalent to 3 exponent 4 over 3 exponent 2
choli [55]

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9 or B

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3 years ago
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For the function y=-1+6 cos(2pi/7(x-5)) what is the minimum value?
Ad libitum [116K]
Usually one will differentiate the function to find the minimum/maximum point, but in this case differentiating yields:
\frac{2\pi}{7(x-5)^{2}}\sin{\frac{2\pi}{7(x-5)}}}
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I would, though, venture a guess that the minimum value would be (approaching) 5, since the function would be undefined in the vicinity.

If, however, the function is
-1+\cos{\frac{2\pi}{7}(x-5)}}
Then differentiating and equating to 0 yields:
\sin{\frac{2\pi}{7}(x-5)}}=0
which gives:
x=5 or 8.5

We reject x=5 as it is when it ix the maximum and thus,
x=8.5\pm7n, for n=0,\pm 1,\pm 2, ...
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3 years ago
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2. Definition of midpoint
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