3 years ago

What are the terms in 8(x-1)+15

Mathematics

1 answer:

Yuki888 [10]3 years ago

8 0

Did you need the answer to the equation? Or did you need the term of the equation?

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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

$r \to radius$

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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3 years ago

(35 points) answer 5 and 7 only please

tatyana61 [14]

A2+b2=c2 and get your answer

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3 years ago

Alvin is 9 years younger than Elga. The sum of their ages is 67. What is Elga's age?

ASHA 777 [7]

Answer:

Elga is 38

Step-by-step explanation:

Alvin is 29

38 + 29 = 67

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Given that x and y vary inversely and that y is 8 when x is 2, what is the constant of variation, k?

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Answer:

Step-by-step explanation:

the equation is x = k / y

therefore k = x* y

k = 2*8

k= 16

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U technecally wrote the answer

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