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Irina18 [472]
3 years ago
13

Which expression is equivalent to –(3 + 4x)?

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
5 0

Answer:

-3-4x

Step-by-step explanation:

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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
3 years ago
What is 40.15 divided by 7.3, written as a decimal?
Cloud [144]
The answer is 5.5.
hope this helps!!
5 0
3 years ago
Pls I help I need answers and work shown
WITCHER [35]

0.30 as a fraction is 30/100 = 3/10

0.30 as a percent = 0.30 * 100 = 30%

 answer is D. 3/10 and 30%

4 0
3 years ago
Read 2 more answers
Find the circumference of a circle with a radius of 10. Leave in terms of pi
Alexus [3.1K]

The formula of a cirumference of a circle:

C=2\pi r

r - radius

We have r = 10. Substitute:

C=2\pi(10)=20\pi

<h3>Answer: C = 20π</h3>
6 0
3 years ago
Tower A is 90 feet tall. Tower B is 180 feet tall. Tower C is 5 times as tall as both Towers A and B combined. How tall is Tower
noname [10]

Answer:

1350

Step-by-step explanation:

I added tower A and B together (90+180) Which gives me 270. Then I did;

270 * 5= 1350 ft. Hope its correct!

6 0
3 years ago
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