17m plus 3 can be expressed as an expression in the form (17m + 3).
107mm. You cannot answer that in cm
-7m + 20 = -17m - 1010m = -30m = -3
Produced by reflected sound waves over 17m away?
107mm equates to 10.7cm (there are 10mm per cm).
If the dimensions are 17m by 11m then the area will be 187 square m which is not a prime number