Answer:
$15.80
Step-by-step explanation:
First you multiply $1.40 times 3 to get $4.20 then you subtract the $4.20 from $20 to get $15.80
Answer: <em>$90.00</em>
Step-by-step explanation:
<em>Take this equation </em>
<em>120(n)</em>
<em>n will equal 0.75 since it is 75% of the original price</em>
<em>120(0.75)</em>
<em>$90.00</em>
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.
Answer:
Tally marks
Step-by-step explanation:
It is most likely tally marks because all of the other options are more recent than option b the Greek and Latin letters are dated to be closer to the modern times than the cavemen were.
Answer:
B -1,5
Step-by-step explanation: