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viva [34]
2 years ago
5

Please help me !!! I will give you brainliest !!!!

Mathematics
2 answers:
MatroZZZ [7]2 years ago
6 0

Sorry if it's wrong, I tried

Alexxandr [17]2 years ago
4 0

Answer:

cant see it clearly?

Step-by-step explanation:

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The mean of 100 observation is found to be 40. If at the time of compution two items were wrongly taken as 30 and 27 instead of
Colt1911 [192]

Answer:

40.18

Step-by-step explanation:

According to this question, the mean of 100 observation is found to be 40. This means that the number of values in the set of data is 100. However, at the time of computation two items were wrongly taken as 30 and 27 instead of 3 and 72.

The mean is derived by dividing the sum of values in the data (Σx) by the number of observations (n) i.e.

Mean = Σx/n

For the computation error:

Mean = 40

Let x represent the sun of other 98 values except 30 and 27

n = 100

40 = x + 30 + 27/100

40 = 57 + x/100

Cross multiply

4000 = 57 + x

x = 4000 - 57

x = 3943.

Sum of other 98 values = 3943.

Now, let's find the correct mean with correct values of 3 and 72;

Mean = Σx/n

Mean = 3943 + 3 + 72/100

Mean = 4018/100

Mean = 40.18

7 0
2 years ago
Need help asap!! will mark brainliest
irakobra [83]

Answer: C :D

Step-by-step explanation:

3 0
2 years ago
Calculate the sum.<br> 10+ (-42)<br> O A. 52<br> O B. -32<br> O C. 32<br> D. -52
kotykmax [81]

Answer:

B

Step-by-step explanation:

10 + (-42)

10 - 42

-32

8 0
2 years ago
A company makes and sells charm bracelets. The cost of producing x bracelets is represented by the function
Serggg [28]

P(x) = 12x – 180

Given:

A company makes and sells charm bracelets.

The cost of producing x bracelets is represented by the function C(x) = 180 +

8x

The revenue earned from selling x bracelets is represented by the function

R(x) = 20x.


Explanation of terms:

For x bracelets,

Cost of production is C(x); C(x) = 180 + 8x

Revenue earned is R(x); R(x) = 20x.Profit made is P(x); P(x) is unknown

Profit made = Revenue earned – Cost of production

∴ P(x) = R(x) – C(x)

P(x) = 20x – (180 + 8x)

P(x) = 20x – 180 – 8x

P(x) = 12x – 180

The profit made from selling x bracelets is represented by the function

<em> P(x) = 12x – 180</em>



8 0
3 years ago
Read 2 more answers
Which of the following statements has the same truth value as the statement "If it is Friday, then Bruce has beans for supper."?
german
<span>If Bruce does not have beans for supper, then it is not Friday.</span>
6 0
3 years ago
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