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Maths Puzzle
Algebra
The diagonal of a square tile is 2 cm longer than its side. Find the length of the side.
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Book Other Question
1. 4x+3y=1, x=1-y
2. 2x-y=6, -x+y=-1
3. 6x-y=3, 4x-2y=-2
4. 2x+3y=7, x=1-4y
5. 2x+3y=6, x-3y=-15
6. 7x-5y=4, y=3x-4
7. 2y-5x=-1, x=2y+5
8. 4x+3y=1, 3x+4y=10
9. 6x-5y=3, 4x+3y=21
10. x+y=4, 3x+4y=10
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The U.S Open meet record for the woman's 400-meter freestyle is 4:05.45, set by USA swimmer Janet Evens back in 1987, How much faster was Evans's time then Yamada's?