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andrezito [222]
3 years ago
9

Eighteen boys joined a group of p students in the auditorium. If the ratio of boys to girls was then 5:4 write and algebraic exp

ression to represent the number of girls in the auditorium.
Mathematics
1 answer:
ycow [4]3 years ago
8 0

Answer:  The number of girls in the auditorium is represented by the algebraic expression y=(4x +72) /5

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

  • <em>Number of boys added: 18 </em>
  • <em>Ratio of boys to girls: 5:4 </em>

So, the total number of boys is:

x + 18  

Number of girls = y

Number of boys / number of girls = 5/4

(x+18) /y = 5/4

Solving for "y"

4 (x +18) =5 y

4x +72 = 5y

(4x +72) /5 = y

The number of girls in the auditorium is represented by the algebraic expression y=(4x +72) /5

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These hypothesis is a one tailed test. The null hypothesis will get rejected when the mean difference between the sample means is very small.

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And the degree of freedom, DF = 14

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        $n_2$ = size of the sample 2

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Answer:

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Step-by-step explanation:

1. Count how much water drains the first pump every minute. Let the volume of pool be D. Every minute first pump drains D/11 water.

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the length of the lot is 159 yards
the width of the lot is 106 yards</span>
3 0
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