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Nimfa-mama [501]
3 years ago
11

The area of a circle is 497 cm2. What is the circumference, in centimeters? Express

Mathematics
1 answer:
SVEN [57.7K]3 years ago
4 0

Answer:

14π

Step-by-step explanation:

Area πr^2= 49π sq cm

so r= 7 cm

perimeter= 2πr= 14π

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Dylan owes half as much money as he used to owe. If he used to owe $28, which of the following expressions would reflect how muc
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14

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28 ÷ 2 equals 14 and 14 is half of 28

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40% of students in a school wore blue on a spirit Day. If two
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60%

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TERESA gave away 8 baseball cards and has 4 BASEBALL cards left. WRITE A subtraction problem tp show the fraction of he baseball
N76 [4]
Teresa gave away 8 baseball cards and has 4 left. 8 plus 4 means she originally had 12. Right now she has 4 out of her original 12 cards remaining. This gives us 4/12. We can simplify this by dividing our greatest common factors. 4 goes into both parts of our fraction, when we divide each part by 4 we end up with 1/3. Since we are unable to simplify this problem any further, this means our solution and fraction is 4/12 aka 1/3.
4 0
3 years ago
Suppose that the dollar cost of producing x appliances is c(x)=1000+ 90x- 0.2x 2
Aleksandr [31]

Answer:

Step-by-step explanation:

Given that the dollar cost of producing x appliances is

c(x)=1000+ 90x- 0.2x^2

A) Average cost can be obtained by dividing c(x) by units = x

i.e. average cost = \frac{1000}{x} +90-0.2x

B) Marginal cost = dC/dx = 90-0.4x

When x=140 marginal cost = 90-0.4(140)\\=34

C) We calculate

c(140) = =1000+90(140)-0.2(140^2)\\\\=9680

c(141) = =1000+90(141)-0.2(141^2)\\\\\\=9713.80

Marginal cost = difference = 33.80

Same as 34 shown in marginal cost.

6 0
3 years ago
N:2 = 15/5 solve it for n<br><br>​
telo118 [61]

Step-by-step explanation:

N:2 = 15:5

N\2 = 15\ 5

Now cross multiply,

5N = 30

N = 6

5 0
2 years ago
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