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Rzqust [24]
3 years ago
9

The sum of the areas of two circles is 80 square meters. Find the length of a radius of each circle if

Mathematics
1 answer:
bazaltina [42]3 years ago
5 0

Answer:

easy peasy  lemon squeasy (l o l)

Step-by-step explanation:

let the radius of one circle be r and the other be R,

there fore,

2πr + 2πR = 80

=> 2π( r + R) = 80

but we know that, R =2r

=> 2 π ( 3r) = 80

=> 3r = 40/π

=> r = 40/3π

taking the value of pi to be 3.14

=> r = 40/9.42

=> r = 4.246

hence the larger radius = 2r => 8.492

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Answer:

d = 7h +5

Step-by-step explanation

If you go to K-12 then this is the right answer I just took the quiz.

6 0
3 years ago
chelsea deposits $600 into a bank account and is earning simple interest.After 4 years her account has a balance of $621.60.If C
olga nikolaevna [1]
If she deposited $600 and had $621.60 after four years, then she earned: $621.60 - $600 = $21.60 in four years. It means in one year she earned $21.60 ÷ 4 = $5.40. Now we have to find out how many percent of $600 is $5.40:

$5.40 = x% from $600
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x = 0.9

So the interest rate was 0.9% annually.

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8 0
3 years ago
One card is selected at random from a deck of cards. Determine the probability that the card selected is a 10. The probability t
Daniel [21]

Answer:

1:13

Step-by-step explanation:

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6 0
3 years ago
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Answer:

5 pack notebook

Step-by-step explanation:

5 pack notebook costs more because the 4 pack notebook costs 4 dollars w/ 2 cents off, and 5 pack notebook costs 5 dollars and with 1 cent of, so if ir increase by 1 dollar, than probably the 5 pack costs more. It is not about how many, but how much dollars are for per/ notebook.

7 0
3 years ago
What is 851 divided by 48?
makvit [3.9K]

Answer:

= 17.7 ( rounded off to one decimal place)

STAY SAFE, GOD BLESS YOU :)

Step-by-step explanation:

851 ÷ 48

= 17.7291

= 17.7 ( rounded off to one decimal place)

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3 years ago
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