Marcus can walk 1 mile to the library in the same time he can bicycle 2.5 miles to the sporting goods store. his speed on the bicycle is 6 mi/h faster than his walking speed. what is his speed walking?

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.