Answer:
6.3246
or 6.3 if you are rounding
Step-by-step explanation:
Answer:
The number of liters for :
Acid solution a = x = 8 liters
Acid solution b = y = 32 liters
Step-by-step explanation:
Let us represent:
The number of liters for :
Acid solution a = x
Acid solution b = y
Suppose a chemist combines a 25% acid solution and a 50% acid solution to make 40 L of 45% acid solution.
x + y = 40 ...... Equation 1
x = 40 - y
25% × x + 50% × y = 45% × 40
0.25x + 0.5y = 18...... Equation 2
We substitute, 40 - y for x in Equation 2
0.25(40 - y)+ 0.5y = 18
10 - 0.25y + 0.5y = 18
- 0.25y + 0.5y = 18 - 10
0.25y = 8
y = 8/0.25
y = 32 Liters
Solving for x
x = 40 - y
x = 40 - 32
x = 8 Liters.
Hence:
The number of liters for :
Acid solution a = x = 8 liters
Acid solution b = y = 32 liters
Answer:4/15 of the portion of land is left to be mowed.
Step-by-step explanation:
Portion of Lawn mowed by Mr Strand =2/5
Changing to decimal we have 0.4
Portion of Lawn mowed by his son=1/3
Changing to decimal, we have 0.333
From this , we can deduce that Mr Strand mowed most of the Lawn.
Now to find the portion of Lawn remaining to be mowed
Let total portion be =1whole
Such that portion left to be mowed
=1-(2/5+1/3)
1- 6 + 5/15
1-11/15
15/15 -11/15
4/15 of the portion of land is left to be mowed.
Answer:
-6
Step-by-step explanation:
add -3n and -4n= -7n
add 17 to 25
-7n=42
n=-6
4,400 pounds hope this helps