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zaharov [31]
3 years ago
13

Can someone help me with this? I don’t need an explanation I just need the answer thank you :)

Mathematics
1 answer:
Fittoniya [83]3 years ago
5 0

Answer:

87.92 in²

Step-by-step explanation:

pi × (R² - r²) = area

Where R is the radius of the outer circle and r of the inner circle.

Since C = 2pi×r

37.68 = 2×3.14×r

r = 6 in

R = 6 + 2 = 8 in

Therefore,

pi × (R² - r²) = area

Area = 3.14 (8² - 6²)

= 87.92 in²

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99.5

Step-by-step explanation:

398 ÷ 4

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Arnold took a tray of cookies to a party 90% of the cookies were eating only these 5 remain
e-lub [12.9K]

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50 in total, 45 were eaten

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8 0
3 years ago
Do you guys mind helping ?
Katyanochek1 [597]

Answer:

m = -7

Step-by-step explanation:

1) expand: 2/9m-16/9=2/3m+4/3

2) add 16/9 to both sides:

2/9m-16/9+16/9=2/3m+4/3+16/9

3) simplify: 2/9m=28/9+2/3m

4) subtract 2/3 m from both sides:

2/9m-2/3m= 28/9+2/3m-2/3m

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4 years ago
In 2012, the population of a city was 6.29 million. The exponential growth rate was
RoseWind [281]

9514 1404 393

Answer:

  a) P(t) = 6.29e^(0.0241t)

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Step-by-step explanation:

a) You have written the equation.

  P(t) = 6.29·e^(0.0241·t)

__

b) 2018 is 6 years after 2012.

  P(6) = 6.29·e^(0.0241·6) ≈ 7.2686 ≈ 7.3 . . . million

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c) We want t for ...

  8 = 6.29·e^(0.0241t)

  ln(8/6.29) = 0.0241t

  t = ln(8/6.29)/0.0241 ≈ 9.978 ≈ 10.0 . . . years

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d) Along the same lines as the calculation in part (c), doubling time is ...

  t = ln(2)/0.0241 ≈ 28.7613 ≈ 28.8 . . . years

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3 years ago
PLEASE HELP!!!!!! In which week was the rainfall in Portland the highest and how much fell?
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Week 4, 1400

Brainliest plz

Step-by-step explanation:

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