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Sedaia [141]
3 years ago
5

2/7 of students in a school are in 8th grade.

Mathematics
1 answer:
saul85 [17]3 years ago
3 0

Answer:

140

Step-by-step explanation:

First we would find the unit rate of students per seventh. So we would do 40 divided by 2 which gives us 20. So per 1/7 we have 20 students. Which we can then say 7 x 20 = 140. So in total there are 140 students

Hope this helped

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What is another way to write the time "quarter till 8"?​
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7:45

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Cyber Monday Shopping A survey of U.S. adults found that of people said that they would get no work done on Cyber Monday since t
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Complete question :

Cyber Monday Shopping A survey of 1000 U.S. adults found that 33% of people said that they would get no work done on Cyber Monday since they would spend all day shopping online. Find the 95% confidence interval of the true proportion.

Answer:

(0.301 ; 0.359)

Step-by-step explanation:

Sample size, n = 1000

Phat = 0.33

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Confidence interval :

Phat ± margin of error

Margin of Error = Zcritical * sqrt[(phat(1 - phat)) /n]

Margin of Error = 1.96 * sqrt[(0.33 * 0.67) / 1000]

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3 0
3 years ago
in the yearbook class there are 27 students. there are twice as many females then males.. how many males is there in the classro
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6 0
4 years ago
What is the coefficient of the second term of the tribomial (3x+3)^2=9x^2+bc+9
FinnZ [79.3K]

Answer:

18

Step-by-step explanation:

To find the second term of the coefficient, multiply out the left hand side of the equation.

(3x+ 3)^2 = 9x^2 + bc + 9

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The value of b is 18.

6 0
3 years ago
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