Answer:
6 L
Step-by-step explanation:
Given two solutions:
1st solution is 90% saline solution. Let the volume of this solution be litres.
2nd solution is 50% saline solution. Volume of this solution = 4 L
Resultant solution is 74% saline.
To find:
The volume of 1st solution = ?
Solution:
Total volume of the 74% saline mixture = (4+) Litres
We can write equation here, as per the percentage of saline in the mixtures.
90% of L + 50% of 4 L = 74% of (+4)
Therefore, the volume must be <em>6 L</em>.
Answer:
18π
Step-by-step explanation:
Hey There!
The answer would be 4, this is the answer because 4*4*4*4=256
Thus,=256
Thank You!
Answer:
C. R is not equal to -10
Step-by-step explanation:
Restrictions usually deal with preventing the case of dividing by 0. In this case, you'll look at the denominator.
If R = -10 and 10 was added to it, then the denominator would become 0.
Therefore, the expression would be messed up.