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ZanzabumX [31]
2 years ago
14

Circle has a radius of 6 cm.

Mathematics
1 answer:
coldgirl [10]2 years ago
3 0

Answer:

  • d=2r
  • d=2×6
  • d=12
  • circumference =2×pie×r
  • =2×22/7×6
  • 37.71
  • SO 37 is the ans
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A rectangular room is 3 times as long as it is wide, and its perimeter is 48 meters. Find the dimension of the room.
nekit [7.7K]

Length: 12

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7 0
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A golfer keeps track of his score for playing nine holes of golf​ (half a normal golf​ round). His mean score is 8080 with a sta
solniwko [45]

Answer:

Therefore the mean and standard deviation of his total score if he plays a full 18 holes are 160 and 11\sqrt2 respectively.

Step-by-step explanation:

Given that,

For the first 9 holes X:

E(X) = 80

SD(X)=13

For the second 9 holes Y:

E(Y) = 80

SD(Y)=13

For the sum W=X+Y, the following properties holds for means , variance and standard deviation :

E(W)=E(X)+E(Y)

     and

V(W)=V(X)+V(Y)

⇒SD²(W)=SD²(X)+SD²(Y)        [ Variance = (standard deviation)²]

\Rightarrow SD(W)=\sqrt{SD^2(X)+SD^2(Y)}

∴E(W)=E(X)+E(Y) = 80 +80=160

            and

∴SD(W)=\sqrt{SD^2(X)+SD^2(Y)}

              =\sqrt{11^2+11^2}

               =\sqrt{2.11^2}

               =11\sqrt2

Therefore the mean and standard deviation of his total score if he plays a full 18 holes are 160 and 11\sqrt2 respectively.

                                               

4 0
3 years ago
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yan [13]
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<span>All prime discriminants will result in an irrational root, but not all irrational roots have prime discriminants </span>
6 0
3 years ago
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Rainbow [258]
-\frac{47}{10}-\frac{53}{10}=\\&#10;-\frac{100}{10}=\\&#10;-10
4 0
3 years ago
Read 2 more answers
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