20. Monty has 60 coins. Some are quarters and some are dime The number of dimes he has is equal to four times the numb
quarters. Write and solve an equation to find the number of
quarters and dimes he has.

1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23

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

my guess would be b and d, but i didn’t actually get out the pen and paper. lol

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