9.4 is the answer because 6% of 10 is .6 and you do 10-0.6
The order is: -√5, √6, 2.43, 50/20
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This is the formula you would use to calculate how many tiles you would need.
# of tiles you need = Total square footage ÷ square footage of each tile
Total square footage: 69x69 = 4761 square feet
Square footage of each tile = 2x2 = 4 square feet
# of tiles you need = 4761 ÷ 4 = 1190.25
You will need 1190.25 tiles.
The slope-intercept of the line is
y= -2/3x + 2
Going up 2, left 3
Change in y
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change in x