12rocks 6 in each 2 equal piles
4 in each 3 equal piles And 3 in each 4 equal piles
1 mi and 900 ft,1 mile = 5280 ft
68>6t+4 when ever the number is per something(the 6) you put the variable with it and 4 is the constant
t>16
Original painting was 39 ft²
(1.00-.2)39=39(.8)=31.2 ft²
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Answer:
Step-by-step explanation:
We first have to write an expression for each of the types of coins in terms of one of them. If he has 8 more dimes than nickels, let's call nickels "x". That means that dimes is "x + 8". The value of a nickel is .05, so the expression relating the number of nickels to the worth of the nickel is .05x. The value of a dime is .10, so the expression relating the number of dimes to the worth of the dime is .10(x + 8). The total value of these coins is 1.70:
.05x + .10(x + 8) = 1.70 and
.05x + .10x + .8 = 1.70 and
.15x = .9 so
x = 6
That means we have 6 nickels and 14 dimes.
