If you mean that, when you see the words 'ABOUT HOW MUCH' in the beginning of a word problem, you're asking what you mean, it basically implies that you have to round. That you have to estimate. Which is the same as rounding. So, when you see those words, you just have to ROUND.
Solving the equation we get
Step-by-step explanation:
We need to solve the equation and find value of x
Solving:
So, solving the equation we get
Keywords: Solving Equations
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Answer:
Step-by-step explanation:
Given
See attachment for circle O
Required
Find
The sum of angles in a semi-circle is 180 degrees.
So:
This gives:
Hence, the equation is:
20x15x10=3000. The answer should be 3000 cubic feet.
Answer:
538 books should be tested.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find the margin of error M as such
In which is the standard deviation of the population and n is the size of the sample.
How many books should be tested to estimate the average force required to break the binding to within 0.08 lb with 99% confidence?
n books should be tested.
n is found when
We have that
Rounding up
538 books should be tested.