Solve a+1= square root b+1 for b
2 answers:
In order to get b our from under that square root sign, we have to square it. But if we square that side we also have to square the other side because this is an equation, after all, and we need to keep it in balance. If we square the right, we undo the square root, and the equation then looks like this: 
. We will FOIL out the left side to get 
. Now, to solve for b, we will subtract the 1 from both sides, leaving us with 
, the first of your choices above.
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Answer:
0.0062 = 0.62% of the 24-ounce bags contain less than the advertised 24 ounces of chips.
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.
Mean of 24.5 ounces and a standard deviation of 0.2 ounce.
This means that
What proportion of the 24-ounce bags contain less than the advertised 24 ounces of chips?
This is the p-value of Z when X = 24. So
has a p-value of 0.0062.
0.0062 = 0.62% of the 24-ounce bags contain less than the advertised 24 ounces of chips.