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mr Goodwill [35]
3 years ago
15

Erin and mark are hiking down to the river. They descend 1,860 feet. They started hiking at 7:40 am and finished at 12:30 pm. Wh

at is the rate of change
Mathematics
1 answer:
marysya [2.9K]3 years ago
5 0
The rate of change is the 1,869
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Circle O has a circumference of approximately 2501 ft.
yawa3891 [41]

For this case we have that by definition, the circumference of a circle is given by:

C = \pi * d

Where:

d: Is the diameter of the circumference

According to the data we have to:

C = 250ft

Substituting:

250 = \pi * d\\Taking\ \pi = 3.14\\250= 3.14 * d\\d = \frac {250} {3.14}\\d = 79,6178343949

Rounding out we have that the diameter is: 80

Answer:

Option B

6 0
3 years ago
Read 2 more answers
A polynomial function has -5√3i as a root. Which of the following must also be a root of the function?
yan [13]

Answer:

-5+√3i  is the given root so -5-√3i  must be the other root

Step-by-step explanation:

We know that complex roots must come in pairs. The pairs are complex conjugates.  (a+bi)  and (a-bi)

You are missing a sign between -5 and the square root

So if - 5+ sqrt(3) i  is a root, then -5 - sqrt(3) i   must be a root  

if -5 - sqrt(3)i   is a root, then -5 + sqrt(3)i   must be a root.


I will assume you missed a + sign

-5+√3i  is the given root so -5-√3i  must be the other root

5 0
4 years ago
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Find an angle between 0° and 360° that is coterminal with 405° .
Murljashka [212]
After 360 degrees, it starts over
so minus 360 from 405 to get 45 degrees
so it would be 45 degrees
5 0
4 years ago
To measure the speed of a current, scientists place a paddle wheel in the stream and observe the rate at which it rotates. If th
vova2212 [387]
In your question that ask to find the speed of the current in meters per second where as the paddle wheel's radius is 0.2m and rotates at 100rpm. In your question, the acceleration could be, based on my calculation, the acceleration is V= 2.0994 m/s
8 0
3 years ago
Please help with as much as possible thx :)
Otrada [13]
11: 14 and 20, continued
0.173 to nearest hundredth: 0.17
7.09 <7.99
3/4 longer
numerical expression: 13
2430 divided by 5: 486
980 divided by 1000= 0.98
162 x 78=12636
Fifty-three hundredths: .53
That's all I'll do for now :)
Your welcome!
Good luck!
4 0
4 years ago
Read 2 more answers
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