Jason rides his bike 20 miles every week. if he rode 2 and 1/5 miles on monday,2 and 2/7 miles on wednesday ,and 3 and 3/5 miles on friday how much does he have to ride on saturday in order to meet his 20 mile goal?

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

The second and fourth answer are correct