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
1 answer:
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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x = 2
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4x +4=12
-4. -4
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