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zaharov [31]
4 years ago
12

Brooke has set up 70 chairs in equal rows for the class talent show. But,there is not room for more than 20 rows. What are the p

ossible number of rooms that Brooke could set up?
Mathematics ​
Mathematics
1 answer:
Mama L [17]4 years ago
8 0

Answer:  If the rows must be even, she can set

14 rows of 5 chairs

10 rows of 7 chairs

7 rows of 10 chairs  or

5 rows of 14 chairs

Step-by-step explanation:

Take the prime factors of 70: 2, 5 and 7  Multiply  them in different ways to get the combinations where no product is greater than 20. (7 ×5 is the one combination of factors that won't work)

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HI THERE!
i can help you  :) 
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 let the number of raisins (in pounds) be R and the number of peanuts  (in pounds be p. 

since the bag is 30 pounds, so R+P =30
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now we can use the per-pound costs to write an equation  . . . 
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now use that to substitute in the other equation 
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(hope this helps sorry it took so long to type )
have a good day !


 





  
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Hello there,

I believe that your correct answer would be B.

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~Jurgen


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Hope this helps ;)

Step-by-step explanation:

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