jsdlfjlk1936
15.10.2019 •
Mathematics
Time limit
a jar contains 35 dimes and nickles the total value of the coins is $2.50 if d= the number of dimes and n= the number of nickles this is the system of equation
d+n=35
0.10d+0.05n=2.50
how many of each type of coin are there solve the system to answer the question
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Ответ:
93+52+x=180(sum of angels of a triangle)
145+x=180
x=180-145
x=35