Prove the divisibility of the following problems: (This is for RSM) 5^31-5^29 is divisible by 100

12^13-12^12-12^11 is divisible by 7 and 19

11^9-11^8+11^7 is divisible by 3 and 37

Will mark brainliest!

Which of the following would represent the sum of 3 consecutive integers if x is the first integer?

What are the constants in this expression? -10.6+9/10+2/5m-2.4n+3m

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.