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yaroslaw [1]
4 years ago
11

two trains leave a station on different tracks. the tracks make an 112 degree angle with the stations as vertex. the first train

travels at an average speed of 90 kilometers per hour and the second at an average speed of 55 kilometers per hour. how far apart are the trains after 2 hours.
Mathematics
1 answer:
iris [78.8K]4 years ago
4 0
Ok i is yyyyyup ok i is jack green green orange brown 90 killo
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Find the area A of the sector of a circle of radius 90 in formed by central angle 1/6 radian.
miv72 [106K]

Answer:

2121 in^{2} Rounded to the nearest inch.

Step-by-step explanation:

A = \pi r^{2}  Is the formula for a circle, but we only have a portion of a circle so we will have to adjust the formula for a part of the circle.

A = \frac{\frac{\pi }{6} }{2\pi } \pi r^{2}  The \frac{\pi }{6} is the part of the circle and the whole circle is 2\pi

\frac{\frac{\pi }{6} }{2\pi } is the same as \frac{\pi }{6}÷\frac{2\pi }{1} Which is the same as \frac{\pi }{6} x \frac{1}{2\pi } Which is the same a \frac{1}{12}

A = \frac{1}{12}\pi90^{2}

A = \frac{1}{12}(3.14)(90)(90) = 2119.5.  When you use the \pi on your calculator you get a slightly different number.  This is due to rounding.

A = 2120.575041

5 0
2 years ago
FIND THE slope given two points! pls help ill mark brain-list! (50 pts)
Arturiano [62]

Answer:

1 is 3

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5 undefined

6 1.25

7 1.5

8 5

9 -2

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14 -1

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Step-by-step explanation:

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3 years ago
Which underfined geometric term can be described as a one dimensional
satela [25.4K]

Hello from MrBillDoesMath!

Answer:

A point.



Thank you,

MrB

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23. You get 17 out of 22 questions correct on a math test.
Fantom [35]

Answer:

a) 77.3 %

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Step-by-step explanation:

a)

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b) The percentage is greater than 70% meaning it is a pass

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3 years ago
What is 9,644÷4<br> And what is the work on divide three and four digit dividends
nevsk [136]
2,411 is the answer
Just divide regularly, it may be more numbers but the way to do it is the same :)
7 0
3 years ago
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