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Travka [436]
3 years ago
12

There are 112 seats in the school auditorium. There are 7 seats in each row. There are 70 people seated,filling up full rows of

seats. How many rows are empty?
Mathematics
2 answers:
irga5000 [103]3 years ago
8 0
I think 6 rows are empty because 112-70=42 and 42 divided by 7=6
lord [1]3 years ago
6 0
I think 11 rows are empty.
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Step-by-step explanation:

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$0.40c + $0.20h = $11

5 0
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Is it possible for two numbers to have a difference of 8 and a sum of 1?
topjm [15]

Answer: yes , it is possible

Step-by-step explanation:

Let the first number be x and the second number be y .Then , the sum of the two numbers will be x + y , and their difference will be x - y.

Combining the two , we have :

x + y = 1 ............................... equation 1

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solving the system of linear equation by substitution method. From equation 1 , make x the subject of the formula ,

x = 1 - y ...................... equation 3

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subtract 8 from both sides

1 - 8 = 2y

- 7 = 2y

divide through by 2

y = \frac{-7}{2}

y = - 3.5

substitute y = -3.5 into equation 3 to find the value of x , we have

x = 1 - y

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x = 1 + 3.5

x = 4.5

Let us check :

x + y will be

4.5 + (-3.5) = 1

Also ,

x - y will be

4.5 - (-3.5)

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7 0
3 years ago
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babymother [125]

Step-by-step explanation:

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8 0
3 years ago
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Answer:

x=5

Step-by-step explanation:

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lets check

(5-5)^2 = 5^2-25

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0 = 0

7 0
2 years ago
Read 2 more answers
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