Least common denominator 7/40 and 1/30
1 answer:
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Answer:
x = -10
Step-by-step explanation:
We just have to translate the problem correctly
>8 times a number is the same
this tells me that
>as 30 less than 5 times the number.
Now set them equal to eachother
Now isolate the variable x
<h2>Explanation:</h2><h2></h2>
When we have relationships between two variables and their ratios are equivalent, we call this as proportional relationship. A scale drawing is a model that has been reduced or enlarged from its original size. Suppose you have a horse that measures 1,5m high by 2m long and want to draw a reduced model by a scale factor of 1:10, then your drawing will measure:
So the components are:
- Measurements of the original object
- Measurements of the drawing
- Scale factor
Answer:
x = ±
Step-by-step explanation:
9x² - 4 = 0 ( add 4 to both sides )
9x² = 4 ( divide both sides by 9 )
x² = ( take the square root of both sides )
x = ± = ±
= ±
Answer:
The sample mean is 13.
The sample variance is 0.2286.
The sample standard deviation is 0.4781.
Step-by-step explanation:
The sample is:
S = {12.6, 12.9, 13.4, 12.3, 13.6, 13.5, 12.6, 13.1}
The sample is of size <em>n</em> = 8.
The formula to compute the sample mean, sample variance and sample standard deviation are:
Compute the sample mean as follows:
The sample mean is 13.
Compute the sample variance as follows:
The sample variance is 0.2286.
Compute the sample standard deviation as follows:
The sample standard deviation is 0.4781.