lets take the number 555<u>5</u>
the bold 5 is the one with the greater value since its worth in 5,000
the underlined has less value since its single worth is 5
Area of a triangle=1/2(base x height)
Area=72, Base=8, Height=2x-3
Plug it in.
72=1/2(8 x (2x-3))
72=1/2(16x-24)
72=8x-12
84=8x
x=10.5
Answer:
Test score of 75.7.
Step-by-step explanation:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean and standard deviation , the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.
The results are normally distributed with a mean test score of 60 and a standard deviation of 8.
This means that
Calculate the test score above which 2.5% of all test scores lie.
Above the 100 - 2.5 = 97.5th percentile, which is the value of X when Z has a pvalue of 0.975, so X when Z = 1.96.
Test score of 75.7.
16.95 * .22 = $3.73 Calculate how much off you are getting
16.95 - 3.73 = 13.22 Calculate your total price before tax.
13.22 * .065 = 0.86 Calculate the tax
Now calculate the final price
13.22 + .86 =14.08 Final price
The correct answer is the last choice. You use the quadratic formula
-b+-√(b^2-4ac)/2a
-3+-√(9-4*1*7)/2
-3+-√-19/2
=-3+-√19/2
Hope this helps!