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Wittaler [7]
3 years ago
6

Harrys spell casting class lasts for 5/6 of an hour each day today he has been in class 2/5 of an hour so far.how much more time

is left in class?
Mathematics
1 answer:
vekshin13 years ago
7 0
5/6 of an hour is 50 minutes. 2/5 of an hour is 24 minutes (1/5 of 60 is 12 times 2 is 24) 50 minus 24 is 26. There are 26 minutes left in the class.
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Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the temperature is 80 degrees at midnig
Vladimir [108]

Answer:

The equation is given by:

D(t) = 80 + 9\sin{0.2618t}

Step-by-step explanation:

Sine function:

Has the following format:

y = A\sin{bx}

In which A is the amplitude and \frac{2\pi}{b} is the period.

Suppose you know the temperature is 80 degrees at midnight and the high and low temperature during the day are 89 and 71 degrees

This means that the amplitude of the sinusoidal variation function is 89 - 80 = 80 - 71 = 9. This means that A = 9

During a 24-hour day, which means that the period is 24. So

\frac{2\pi}{b} = 24

24b = 2\pi

b = \frac{2\pi}{24}

b = 0.2618

So the variation is:

V(t) = 9\sin{0.2618t}

Assuming t is the number of hours since midnight, find an equation for the temperature, D, in terms of t.

Initial temperature of 80, so:

D(t) = 80 + V(t) = 80 + 9\sin{0.2618t}

8 0
2 years ago
A determined gardener has 120ft of deer-resistant fence. She wants to enclose a rectangular vegetable garden in her backyard, an
Pavlova-9 [17]

Answer:

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Step-by-step explanation:

cuz thats wat it is cux i think so

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3 years ago
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Answer:

A is the right answer

Step-by-step explanation:

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Read 2 more answers
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