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Breann solved the system of equations below. What mistake did she make in her work? 2x + y = 5 x − 2y = 10 y = 5 − 2x x − 2(5 − 2x) = 10 x − 10 + 4x = 10 5x − 10 = 10 5x = 20 x = 4 2(4) + y = 5 y = −3

asked Jul 10, 2019

Mathematics
middle-school

1 answer

5 votes

1.2k views

Why is it always cooler by the water on a hot summer day? A. Water makes up most of the earth surface B. Current travel great distances C. Water takes longer to heat or cool than land does. D. Warm water

asked Feb 26, 2019

Social Studies
middle-school

2 answers

0 votes

62.6k views

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