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ArbitrLikvidat [17]
2 years ago
10

One person cleans the room in 15 minutes. The other person cleans the same room in 30 minutes. If both of the people work togeth

er, how long will it take to clean the room?
Mathematics
1 answer:
Hunter-Best [27]2 years ago
5 0

Answer:

Por lo tanto será 45 minutos

Step-by-step explanation:


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Circle O is shown. Line segments B O and O C are radii. Point A is on the circle and is not within angle B O C.
Paha777 [63]

The ratio of major to minor arc = 2 : 1

What is a Circle?

A circle is the locus of a point such that its distance from a fixed point (center) is always constant.

Calculation

The length of an arc (L) with center angle θ is given by:

                                          L = (θ/360) * 2πr

where r is the radius.

Putting the values in the above formula.

For the major arc:

L = (240/360) * 2πr

For the major arc:

l = ((360-240)/360) * 2πr

l = (120/360) * 2πr

The ratio of major to minor arc = [(240/360) * 2πr] / [(120/360) *2πr] = 2 : 1

The ratio of major to minor arc = 2 : 1.

Learn more about the circle here:

brainly.com/question/15125799

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2 years ago
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yaroslaw [1]

Step-by-step explanation:

it is the right answer you have to learn inverse function . if f:A to B and is a function then new function from B to A is said to be inverse function in which each element of set a maps unique element of b

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Answer:

a/2 = 9

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FinnZ [79.3K]

9514 1404 393

Answer:

  (c)  y = 36·5

Step-by-step explanation:

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