X = amount of 50% solution
y = total amount after mixing
Note that the amount of alcohol in the 20% solution is 80 (0.2) = 16 oz.
We have 2 unknowns, so we need 2 equations:
first, we can write the equation for the total volume:
y = x + 80
next, apply the percentages to get an equation for the amount of alcohol:
0.4 y = 0.5 x + 16
Finally, solve the pair of equations (in this case, by substitution of the 1st into the second:
0.4 (x + 80) = 0.5x + 16
0.4 x + 32 = 0.5X + 16
rearrange and combine like terms:
0.1x = 16
x = 160
from the 1st equation:
y = 160 + 80 = 240
Wait but that is a test don't you need to look at a book or something insteadt of waiting for the answers
The complete statement is:
- Determine the number of tables by dividing 754 by 6
- If there is a remainder, the answer will need to be rounded.
- There is a remainder, so 126 tables are needed.
<h3>How to determine the number of tables?</h3>
The given parameters are:
Students = 754
Student per table = 6
The number of tables is calculated as:
Table = Students / Student per table
This gives
Table = 754/6
Evaluate the quotient
Table = 125.7
Approximate
Table = 126
Hence, the complete statement is:
Determine the number of tables by dividing 754 by 6
If there is a remainder, the answer will need to be rounded.
There is a remainder, so 126 tables are needed.
Read more about quotient at:
brainly.com/question/629998
#SPJ1
Answer:
When finding for the area of a square ,the lenght will be squared automatically leading to a greater value which is greater that of the rectangle which is length multipled by Width
Answer:
Step-by-step explanation:
When taking a square root and making it a radical, we need to list out it's factors and find which one we can take the square root of.
The factors of 40 are:
1, 2, 4, 5, 8, 10, 20, 40.
Out of these, we need to look for one that we can find the square root of.
We know that the square root of 4 is 2.
Therefore, we can make 
into 
.
The square root of 4 is 2. Therefore, we can put that outside the radical.
.
Hope this helped!
