Question

the mean of 6 observation is 15. four of the observation are 10,18,23 and 9. of the remaining two observation one is four times the other. find them​

Answer 1

Answer:

ATQ

ᴛᴀɴ 2A = ᴄᴏᴛ( A-18° )

=>ᴛᴀɴ 2A = ᴛᴀɴ [ 90-(A-18°)

=>2A = 90- A+18

=>2A+A = 108

=>3A = 108

=>A=108/3

=>A= 36

I will give the answer later on ok??

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Now I need to give answers of 25 questions that's why I am not giving the correct answer

Answer 2

Answer:

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Given that:

The mean of 6 observation is 15.

Four of the observation are 10, 18, 23 and 9.

The remaining two observation one is four times the other.

To Find:

What are the remaining two observations?

Let us assume:

Let the one observation be x.

Other observation = 4x

Formula used:

Mean = (Sum of observations)/(Number of observations)

Finding the remaining two observations:

According to the question.

⟶ 15 = (10 + 18 + 23 + 9 + x + 4x)/6

Cross multiplication.

⟶ 10 + 18 + 23 + 9 + x + 4x = 15 × 6

⟶ 60 + 5x = 90

⟶ 5x = 90 - 60

⟶ 5x = 30

⟶ x = 30/5

⟶ x = 6

Remaining observations are:

One observation = x = 6

Other observation = 4x = (4 × 6) = 24