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Nana76 [90]
3 years ago
15

The product of two integers is 72. One number is two less than five times the other. Which of the following equations could be u

sed to find one of the numbers?
A. 2x2 - 5 = 72

B. 2x2 - 5x = 72

C. 5x2 - 2x = 72

D. 5x2 - 2 = 72

For plato users the answer is C
Mathematics
1 answer:
melisa1 [442]3 years ago
8 0
Let the 2 integers be x and y.

Their product is 72, so we write: xy=72. (I)

One of them, say y, is 2 less than 5 times the other. We can write this as the equation:
                               y=5x-2. (II)

To find one of numbers, say x, we can substitute y with 5x-2, in the first equation:

xy=72,

x(5x-2)=72,

expanding the left hand side expression we get:

5x^2-2x=72.


Answer: C
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