Billy Bob has 23 coins that total $1.70. He found some nickels and dimes in the couch. How many nickels and dimes did he find?

Step-by-step explanation: Basically all yh gotta do is divide 23 by a dolla nd 70 cents and yh got ya answer. np fashoo

12 nickels

11 dimes

Step-by-step explanation:

Let n = no. of nickels

     d = no. of dimes

   5n = value of nickels in cents

   10d = value of dimes in cents

    170 = total value in cents

(1)   n + d = 23             (2)   5n + 10d = 170

           d = 23 - n                5n + 10(23 - n) = 170

                                           5n + 230 - 10n = 170

                                                     - 5n = - 60

                                                          n = 12 nickels

           d = 23 - 12 = 11 dimes

Check:  12(5) + 11(10) = 60 + 110 = 170 cents or $1.70

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this