The x-intercept is -2, since the line intersects with the x-axis at (-2, 0).
The y-intercept is 1, since the line intersects with the x-axis at (0, 1).
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62.85 times so basically 63 times
Answer:
The upper 20% of the weighs are weights of at least X, which is 
, in which 
is the standard deviation of all weights and 
is the mean.
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean and standard deviation , the z-score of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Upper 20% of weights:
The upper 20% of the weighs are weighs of at least X, which is found when Z has a p-value of 0.8. So X when Z = 0.84. Then
The upper 20% of the weighs are weights of at least X, which is , in which is the standard deviation of all weights and is the mean.
Total amount is 55.78
Tip is 7.28
Before you start the job, gather up your tools.
You need three tools for this job. Let's make sure
you remember how to use them:
#1). 3 is the same thing as 3/1
#2). When you need to divide fractions, turn the
second one upside down, and then multiply them.
#3). When you're multiplying fractions, multiply the numerators
to get the numerator of the answer, and multiply the denominators
to get the denominator of the answer.
Those are the tools you need to solve this problem.
1). 3/4 divided by 3 is the same as 3/4 divided by 3/1 .
2). To divide by 3/1, multiply by 1/3 .
Now you have 3/4 times 1/3 .
3). That's the same as (3 x 1) / (4 x 3) = 3/12 =<em> 1/4</em>
