For a histogram with scale on vertical axis 1 unit =500 if height of a rectangle is 3.2 units frequency of the class interval represented by it is

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If arithmetic mean of 5, 6, x, 9 and 13 is 8 then find the value of x

Detailed Solution

  1. Arithmetic mean = 12.
  2. Formula Used:
  3. Arithmetic mean = Sum of terms/Number of terms.
  4. Calculations:
  5. Number of terms = 7.
  6. Sum of terms = 1 + 5 + 9 + 13 + 17 + 21 + x.
  7. ⇒ Sum of terms = 66 + x.
  8. Arithmetic mean = Sum of terms/Number of terms.

Correct option is D)

Since, Mean =

5

7+5+13+x+9

⇒10=

5

34+x

⇒50=34+x

⇒x=16

∴ Option D is correct.

Write a paragraph of 12 lines on what you are going to present to the principal

Answer:

I am going to thive bank account details send me fast

Explanation:

So funny Phrank So funny

Jim has a rope of 5½m he cuts of one -third of it what is the length of part cut off

Answer:

11/6 is the answer

Explanation:

Find the breadth of a rectangular plot of land, if its area is 220m² and the length is 4m. also find its perimeter

Answer:

118m

Explanation:

A= wl

P=2(l+w)

Solving for P

P=2l+2A/l

 =2·4+2·220/4

 =118m

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