Answer:
4, 5, 6
Step-by-step explanation:
First integer is X, consecutive is (x+1), next consecutive is (X+1+1)=(X+2)
Three consecutive integers have a sum of 15. X+X+1+X+2 = 15
X+X+1+X+2 = 15
3X + 3 = 15
3X = 15-3
3X = 12
X = 4
X+1 = 4+1=5
X+2 = 4+2=6
Check: 4+5+6=15, 15=15
Answer:
x
y
−
2
2
−
1
0.5
0
0
1
0.5
2
2
Step-by-step explanation:
$0.10 since you divide the price by the fluid ounce. (1.19/12=0.991...)
Let n = number of nickels, and p = number of pennies.
The number of coins is 25, so we get this equation.
n + p = 25
The value of the coins is 0.05 per nickel, and 0.01 per penny.
0.05n + 0.01p = 0.73
Now you have a system of equations.
n + p = 25
0.05n + 0.01p = 0.73
Solve the first equation for n:
n = 25 - p
Now substitute into the second equation.
0.05(25 - p) + 0.01p = 0.73
1.25 - 0.05p + 0.01p = 0.73
-0.04p = -0.52
p = 13
There were 13 pennies.
Now we substitute 13 for p in n + p = 25 to find out the number of nickels.
n + 13 = 25
n = 12
There are 13 pennies and 12 nickels.
Check: 13 pennies and 12 nickels does total 25 coins.
13 * 0.01 + 12 * 0.05 = 0.13 + 0.60 = 0.73
The value is $0.73.
Our answer is correct.
