You have to get rid of the decimal part, losing part of the number. You can round to the nearest integer (2), you can round down (also 2 in this case), or you can round up (3), depending on your needs.
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There aren't any whole numbers that satisfy these conditions. The only numbers that multiply to 23 are 23 and 1.
-5 and -4 or 4 and 5
0.3x - 0.2y = 4 (or you can multiply by 10 in order to work with whole numbers) 0.2x - 0.3y = 5/23 3x - 2y = 40 2x -3y = 50/23 2(3x) - 2(2y)= 2(40) -3(2x) - (-3)(3y) = (-3)(50/23) 6x - 4y = 80 -6x +9y = -150/23 6x - 6x - 4y + 9y = 80 - 150/23 5y = 1690/23 y = (1690/23)/(5) y = (1690/23)(1/5) y = 338/23 2x - 3y = 50/23 2(338/23) - 3y = 50/23 676/23 -3y = 50/23 -3y = -676/23 + 60/23 -3y = -616/23 y = (-616/23)/(-3) y = (-616/23)(-1/3) y = 616/69
Area of circle: pi*23^2 = 1661 square meters rounded to the nearest whole number
-23