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Vikentia [17]
3 years ago
12

Points C and D lie on circle O as shown below. If OC = 6x+2 and OD = 10x -16, then find the length of the radius of circle O.

Mathematics
1 answer:
Ket [755]3 years ago
3 0
Radius = OC = OD

Solve for x:

10x -16 = 6x+2

4x = 18

x = 9/2 = 4.5

Sub 'x' back into OC

OC = 6(4.5) + 2 = 29

Radius = 29
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standard deviation
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7 0
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5th grade math. correct answer will be marked brainliest
Lelechka [254]

Answer:

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Step-by-step explanation:

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The mean of five numbers is 8. when another number is added the mean is 7. find the number added
sasho [114]

Answer:

\large \boxed{\sf \ \ 2  \ \ }

Step-by-step explanation:

Hello,

<u>The mean of five numbers is 8</u> so we can write

\dfrac{x_1+x_2+x_3+x_4+x_5}{5}=8

<u>When another number is added the mean is 7</u>, let s note x the another number we can write

\dfrac{x_1+x_2+x_3+x_4+x_5+x}{6}=7

From the first equation we can say

x_1+x_2+x_3+x_4+x_5=8*5=40

So the second equation becomes

\dfrac{x_1+x_2+x_3+x_4+x_5+x}{6}=7\\\\ \dfrac{40+x}{6}=7\\\\40 + x = 6*7=42\\\\ x = 42-40 = 2\\

The solution is then 2

Hope this helps

4 0
2 years ago
What is 1+ 2/5 over 2?
katovenus [111]

Answer:

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Step-by-step explanation:

<u>1 + 2/5</u>

   2

<u>5/5 + 2/5</u>

      2

<u>7/5</u>

2

<u>7</u>  +  <u>2</u>

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5 0
3 years ago
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Firdavs [7]
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