A b and c are polynomials,when A=n,B=2n+6,and C =n^2-1 what is ab-c in simplest form
1 answer:
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Answer:
10 Girls
Step-by-step explanation:
Total number of girls in Alden Middle school= 25 girls
Percent of girls play for travel team= 40%
We have to find the numbers of girls who play for middle school team
Numbers of girls who play for middle school team= 25 ×
Numbers of girls who play for middle school team=25 ×
Numbers of girls who play for middle school team=10
Hence the number of girls play for travel team= 10 girls.
Hence, the correct answer is 10.
Answer:
<em>84%</em><em> of the wage earners earn less than $14,000 each. </em>
Step-by-step explanation:
The Empirical Rule (68-95-99.7%)-
According to this around 95% of the data will fall within two standard deviations of the mean.
As the bell curve is symmetrical, so the remaining 5% will be divided into 2 equal parts. So 2.5% will be above 2 standard deviation and 2.5% will be below 2 standard deviation.
As it is given that, the top 2.5% of the wage earners earn $18,000 or more, so 18,000 is 2 standard deviation away from the mean 10,000.
i.e
We know that,
where,
X = raw score = 14,000
μ = 10,000
σ = 4,000
Putting the values,
Now, calculating the value from the z score table,
As the probability at is the area below that, so 84% of the wage earners earn less than $14,000 each.
