Subject: monomials
I have 2 preAlgebra problems (from the book:Glencoe PreAlgebra and Integrated Trasiton to Algebra & Geometry)Ęthat I don't understand and I don't remember how to do them.
Here they are:
Tokola has 5 coins with a total value of $1.05. He canot make change for a dollar, 5 cents, 10 cents, 25 cent, or 50 cents. What 5 coins does he have?
and
Determine whether 6cd is a monmial. Explain why or why not.
thank you
Hi,
Make a list of the coins that Tokola could possibly have.
Dollar coins  
Half dollar coins  
Quarters  
Dimes  
Nickles  
Pennies  
 He can't have a dollar coin, since if he did he would also have to have a nickle or 5 pennies. In either case the number of coins he has wouldn't be 5.
 He can't have any pennies. If he did he would need at least five pennies since his total is $1.05. With 5 pennies he could make change for 5 cents.
 He can't have any nickles. If he did he could keep one nickle and the rest would make change for a dollar.
 He can has at most 1 quarter. If he had two he could make change for 50 cents.
Thus his list of possible coins is:
Dollar coins  None 
Half dollar coins  ? 
Quarters  At most 1 
Dimes  ? 
Nickles  None 
Pennies  None 
Can you make $1.05 using 5 coins from the list possible coins?
For the second problem look in the index of the book for the definition of monomial. Does 6cd fit the definition?
Cheers,
Penny
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