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Blizzard [7]
3 years ago
12

Add the following- 3/5,- 7/10and 4/15​

Mathematics
1 answer:
maxonik [38]3 years ago
4 0

Answer:

-31/30

Step-by-step explanation:

-3/5 - 7/10 + 4/15 = -31/30

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B is the right answer
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The sector COB is cut from the circle with center O. The ratio of the area of the sector removed from the whole circle to the ar
mafiozo [28]

Answer:

Ratio = \frac{R^2 - r^2 }{ r^2}

Step-by-step explanation:

Given

See attachment for circles

Required

Ratio of the outer sector to inner sector

The area of a sector is:

Area = \frac{\theta}{360}\pi r^2

For the inner circle

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The sector of the inner circle has the following area

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For the whole circle

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The sector of the outer sector has the following area

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So, the ratio of the outer sector to the inner sector is:

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Cancel out common factor

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Express as fraction

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6 0
3 years ago
The complement of an angle measures 20 more than the angle. Find the number of degrees in the angle
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Let the measure of its complement be x°.
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inn [45]

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6 0
3 years ago
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