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3 years ago

Write a system of equations to describe the situation below, solve using elimination, and fill in the blanks.

Mathematics

1 answer:

nataly862011 [7]3 years ago

4 0

Answer:

Step-by-step explanation:

x = small barrettes

y = large barrettes

13x + 11y = 142.......multiply by -1

13x + 12y = 149

-----------------------

-13x - 11y = -142 (result of multiplying by -1)

13x + 12y = 149

------------------------add

y = 7..........large barrettes used 7 yards

13x + 11y = 142

13x + 11(7) = 142

13x + 77 = 142

13x = 142 - 77

13x = 65

x = 65/13

x = 5........small barrettes used 5 yards

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Step-by-step explanation:

We are given that

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h= $\frac{200}{\pi (2.09)^2}=14.57$

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