Lao wrote the number 85 on the board is 85 prime or composite explain

Solve x+3y=6 and 4x-6y=6 by elimination . show work !

Identify the number as a rational or irrational.explain. 127

20 points for the answer. this is for real , don't put random ! a rectangle has a length of 4 centimeters and a width of 7 centimeters. what is the effect on the perimeter when the dimensions are multiplied by 5? the perimeter is increased by a factor of 5. the perimeter is increased by a factor of 20. the perimeter is increased by a factor of 25. the perimeter is increased by a factor of 100.