Plug in what we know
P = 20 feet, W = 2 feet
20 = 2L + 2(2)
20 = 2L + 4
16 = 2L, L = 8 feet
Convert feet to inches
1 foot = 12 inches
12 * 8 = 96 inches
Solution: 96 inches
Answer is 8 liters
Reason
1 to 4 is the same as 2 to 8
So 2 concentrate to 8 water
Answer:
30
Step-by-step explanation:
For a = <xa, ya> and b = <xb, yb>, the dot product is the sum of products ...
a·b = (xa)(xb) + (ya)(yb)
Substituting the given information, you have ...
a·b = 5·4 + 2·5 = 20 + 10
a·b = 30
_____
Some graphing calculators can do such math. There are also dot product calculators available on the Internet. If you have quite a few of these to calculate, you can put the appropriate formula into a spreadsheet.
Answer:
m + 2
2 dollars + one dollar per minute
