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steposvetlana [31]
3 years ago
12

It costs $430 to rent the cottage for the weekend.Last year it cost $400.What percentage increase is this?

Mathematics
2 answers:
Inessa05 [86]3 years ago
6 0
(430-400)/400=7.5%
Hope this’ll help
NeX [460]3 years ago
3 0
It increased by 7.5% if you subtract the starting value from the new one and then put that answer over the starting value.
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The graph of a quadratic function intercepts the x-axis in the two places and the y-axis in one place.
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4 0
3 years ago
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The graph of a trigonometric function oscillates between y=1 and y=-7. It reaches its
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Answer:

y = 4 sin(½ x) − 3

Step-by-step explanation:

The function is either sine or cosine:

y = A sin(2π/T x) + C

y = A cos(2π/T x) + C

where A is the amplitude, T is the period, and C is the midline.

The midline is the average of the min and max:

C = (1 + -7) / 2

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The amplitude is half the difference between the min and max:

A = (1 − -7) / 2

A = 4

The maximum is at x = π, and the minimum is at x = 3π.  The difference, 2π, is half the period.  So T = 4π.

Plugging in, the options are:

y = 4 sin(½ x) − 3

y = 4 cos(½ x) − 3

Since the maximum is at x = π, this must be a sine wave.

y = 4 sin(½ x) − 3

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3 years ago
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Answer:

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Step-by-step explanation:

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