The table below lists the masses and volumes of several pieces of the same type of metal. There is a proportional relationship b
1 answer:
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Answer: Three quarters (30 ml) is made up of a 36% acid solution.
Step-by-step explanation:
Since we have given that
Total amount of solution = 40 ml
One- quarter of the solution is given by
Three-quarter of the solution is given by
According to question, we have
10 ml of solution is made up of = 20% of acid solution
30 ml of solution is made up of = say<em> 'c </em>' of acid solution
40 ml of solution is made up of = 32 % of acid solution
So, our equation becomes,
Hence, three quarters (30 ml) is made up of a 36% acid solution.
Given:
15.
17.
19.
To find:
The values of the given logarithms by using the properties of logarithms.
Solution:
15. We have,
Using property of logarithms, we get
Therefore, the value of is 1.
17. We have,
Using properties of logarithms, we get
Therefore, the value of is -1.
19. We have,
Using property of logarithms, we get
Therefore, the value of is 100.