Ten it each group.
That depends on the number of nickels, their dates, and their condition.
How about: 18-6 = 12 and 2*12 = 24
There are fifteen (15) nickels.
2x - 2 = x - 38Subtract x from each side:x - 2 = -38Add 2 to each side:x = -36
Assuming that the phrase "doubled by 2" is tautological, the expression for a number multiplied by 2 (or a number doubled) is 2n.
It depends on the number of nickels.
If the number is doubles its total is doubled since its total is itself!
one third of an unknown number doubled is...
dime = 0.10 nickle = 0.05 (1) 0.10d + 0.05n = 6.05 (2) 2x 0.10d + 0.05(n-10)=9.85 0.20d + 0.05n - 0.5 = 9.85 0.20d + 0.05n = 10.35 To make things easy, I'll multiply everything by 100 (1) 10d + 5n = 605 (2) 20d + 5n = 1035 (1) 5n = 605 - 10d n = 121 - 2d (2) 5n = 1035 - 20d n = 207 - 4d 121 - 2d = 207 - 4d 121 + 2d = 207 2d = 86 d = 43 43 Dimes
Let N be the number of nickels. The value of nickels is 0.05N and the value of dimes is 0.10(2N-12). We can form the equation 0.05N + 0.10(2N-12) = 2.55 and solve for N. After solving, we find that there are 9 nickels.
A natural number is doubled when added to its reciprocal. Find that number!
A 10 dimes and 30 nickels b 21 dimes and 19 nickels c 19 dimes and 21 nickels d20 dimes and 20 nickels