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2 years ago

-37 - -47 gtfrtgyhbtgfvbnhjmrybgtsfvdcsx

Mathematics

2 answers:

Lilit [14]2 years ago

8 0

Answer:

${\huge{\mathfrak{\underbrace{\blue{Answer}}}}}$

.

I hope this helps you.....

vesna_86 [32]2 years ago

3 0

Answer:

-37- -47=-10

Step-by-step explanation:

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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

$r \to radius$

The sector of the inner circle has the following area

$A_1 = \frac{\theta}{360}\pi r^2$

For the whole circle

$R \to Radius$

The sector of the outer sector has the following area

$A_2 = \frac{\theta}{360}\pi (R^2 - r^2)$

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

$Ratio = A_2 : A_1$

$Ratio = \frac{\theta}{360}\pi (R^2 - r^2) : \frac{\theta}{360}\pi r^2$

Cancel out common factor

$Ratio = R^2 - r^2 : r^2$

Express as fraction

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

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2 years ago

The dot plots below show the scores for a group of students for two rounds of a quiz: Two dot plots are shown one below the othe

miskamm [114]

Answer:

The inference that can be made using the dot plot is:

The range of round 1 is greater than the round 2 range.

Step-by-step explanation:

Round 1:

Score Frequency

1 0

2 2

3 3

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Hence, the minimum score of Round 1 is: 2

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2 0

3 0

4 4

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Since round 2 have a higher frequency for higher scores as compared to round-1.

Hence, Range of round 1 is greater than the range of Round-2.

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If I did this correctly it simplifies to 0 = 8. So I think B is the correct answer. Hope this helps!!

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Step-by-step explanation:

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