Answer:
4 horses and 8 ducks.
Step-by-step explanation:
Let the number of ducks be d and the number of horses be h.
d + h = 12
Now ducks have 2 feet and horses have 4 so:
2d + 4h = 32
Multiply the first equation by 2
2d + 2h = 24
Subtract this equation from the second equation:
4h - 2h = 32 - 24
2h = 8
h = 4.
So there were 4 horses and 12 - 4 = 8 ducks.
X×2=10
X=10÷2
X=5
Proof: 5×2=10
The value of 2 in 2481 is 1000 less times the value of 2 in 5072
Answer:
y = 7
Step-by-step explanation:
0.3y+0.6 = 9.7 - y
0.3y+y = 9.7 -0.6
1.3y = 9.1
y= 7
sorry it had an error
Answer:
x=6.111....
Step-by-step explanation:
x-5=0.1(x+5)
distribute 0.1 into (x+5)
x-5=0.1x+0.5
subtract 0.1x on both sides
x-0.1x-5=0.5
combine like terms
0.9x-5=0.5
add -5 on both sides
0.9x=5.5
divide both sides by 0.9
x=55/9 or 6.11111.......
hope this helps
