5m+3=3m+9 5m+3-3=3m+9-3 5m=3m+6 5m-3m=3m+6-3m 2m=6 (2m)/2=6/2 m=3
-3m = 5m+8 -3m-5m = 8 -8m = 8 m = -1
5m = 2m - 153m = -15m = -15/3m = -5
40 cubic meters
-15m but -15 metres doesnt exist
3m by 5m by 3m
2*(3*5 + 5*8 + 8*3) m2 = 2*(15 + 40 + 24) m2 = 2*79 m2 = 158 m2
5*4*3 60?
Assuming this is a rectangular prism, the surface area would be 2LW+2LH+2HW. So the surface area for this object would be: 2*3*5+2*3*8+2*8*5=30+48+80=158 square meters.
-7m - 3m + 5m = -5m
heehheee
5m+3=3m+9 5m+3-3=3m+9-3 5m=3m+6 5m-3m=3m+6-3m 2m=6 (2m)/2=6/2 m=3
-3m = 5m+8 -3m-5m = 8 -8m = 8 m = -1
5m-3x+3m+2x 2m-x
Every one of them could be a side of a rectangle. It is not possible to give an answer in respect of an unspecified rectangular object. however, i feel the question is incorrect as it should be sides of the triangle and according to it 3rd is the answer as 3+5<9 :)
200cm + 3m (300cm) = 500cm (5m)
5m+2n, n-3m, 7-3n (5m+2n)+(n-3m)+(7-3n)=2m+7