Kevin has $4.85 in nickels and dimes. If he has 34 fewer dimes than nickels, how many coins (nickels and dimes) does he have alt
2 answers:
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1 stack of nickels is S=45gm; given that there are 9 nickels on each stack you can divide the mass of the stack(45) by the number of nickels in a stack(9) to find the mass of 1 single nickel
<u>5gm = 1 nickel</u>
<u>5gm = 1 nickel</u>
because y^3 is raised to the power of two, we will have to multiply the exponents rather than adding them.
By distributing the power of 2, we will get y^2(6).
Because now the exponents are being multiplied, we can just add them to get y^8. The other y has a power of 1, so we'll just add the power of that y as well to get y^9.
summary:
multiply exponents if they are being raised to a power.
add exponents if they are being multiplied, and only add them if they have the same base (in this case, both the bases of the exponents are y, so we can add them)
