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PolarNik [594]
3 years ago
13

Solve the system of equations. 2x y = 7 5x y = 9

Mathematics
1 answer:
lana [24]3 years ago
7 0
Are you missing something?
2xy=7
5xy=9 
does not have a solution.
If you mean
2x+y=7
5x+y=9
please say so.
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One number is 5 times another number. The product of the two numbers is 245. Find the two numbers.
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Let's assume the unknown number is x and as another one is 5 times the number then second number is 5x

》x × 5x = 245

》5x square =245

》x square =245÷5

》x square =49

》x=7

So 5x = 5×7=35

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(2a-1)(2a-1)-(2a+3)(2a+3)
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{\color{#c92786}{(2a-1)(2a-1)}}-(2a+3)(2a+3)

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2

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