Answer:What is 17/25 as a decimal fraction?0.68 And what’s 9/12 as a decimal fraction? 0.75
Step-by-step explanation:
Answer:
38.3% of the people taking the test score between 400 and 500
Step-by-step explanation:
When the distribution is normal, we use 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.
In this question, we have that:
What percentage of the people taking the test score between 400 and 500
We have to find the pvalue of Z when X = 500 subtracted by the pvalue of Z when X = 400. So
X = 500
has a pvalue of 0.6915
X = 400
has a pvalue of 0.3085
0.6915 - 0.3085 = 0.383
38.3% of the people taking the test score between 400 and 500
Answer:
Step-by-step explanation:
h
=
3
V
π
r
2
I think?
Picture a triangle with hypotenuse 12 ft and "opposite side" 3 ft. Then the sine of the unknown angle is sin x = (3 ft) / (12 ft), or sin x = 1/4.
Apply the inverse sine function to determine the angle x.
Using my calculator, I got x= 0.253 radian. You could change this into degrees, if you wish, by mult. this result by (180 degrees) / (pi radians).