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.
apples
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
A number decreased by 4 is n-4
A natural number is doubled when added to its reciprocal. Find that number!