3 years ago

Anyone can help me i need it urgently and also show working thank you

Mathematics

2 answers:

stellarik [79]3 years ago

5 0

Answer:

Step-by-step explanation:

because you have to subtract 3x from 4x which leaves x because 1 is just x

Alecsey [184]3 years ago

5 0

Answer:

4x-4=3x

4x-3x=4 - in this step notice how they subtracted 3x from the right side so they could subtract 3x from the left side. By doing so the right side of the equation would be empty and thus is why they added 4 to each side to cancel out the 4 on the left side and add one to the right.

Step-by-step explanation:

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Complete the chart to find the mean, variance, and standard deviation. Remember to use commas and round numbers to the nearest t

vitfil [10]

Answer: The mean of the data is 433.75, variance of the data is 99667.19 and the standard deviation of the data is 315.7011.

Explanation:

The given data is 900, 35, 500 and 300.

The number of observation is 4.

Formula of mean is,

$\text{Mean}=\frac{\text{Sum of observations}}{\text{Number of observations}}$