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3 years ago

Given the quadratic equation below, determine which situation it could represent. x^2-4x=60

Mathematics

1 answer:

Bad White [126]3 years ago

7 0

x^2-4x=60

<h2>In a meeting room for a business event, there are 4 fewer chairs laid out in each row than the number of rows. The total number of chairs in the room is 60.</h2><h2 />

If each row has the same number of chairs as rows, then there is x^2 chairs.

Because there is 4 fewer chairs in every row, for every row you minus 4 - 4x

There a 60 chairs in total.

x^2 - 4x = 60

Substitute a number into the formula to check:

If there are 10 rows:

x = 10

10^2 - 4(10) = 60

100 - 40 = 60.

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