Answer:
Step-by-step explanation:
a ) Let the volume required be v .
v x .8 + 500 x .3 / ( v + 500 ) = .7
.8 v + 150 = .7 v + 350
.1 v = 200
v = 2000 mL
b )
Let the volume of solution A required be v . The volume of solution of B required will be 100 - v
v x .8 + ( 100 - v ) x .3 / 100 = .5
.8 v + 30 - .3 v = 50
.5 v = 20
v = 40 mL
volume of solution B = 60 mL .
c )
It is not possible because 90 % is more than 80 % the concentration of solution A . Any mixture will have concentration less than 80 % .
volume of solution B = 60 mL
In this number 800 is 10 times as much as what number. To answer the query we can illustrate this problem into a mathematical equation of
1. 10 x N = 800
2. 10N = 800
3. N = 800/10
4. N = 80
the answer is 80.
Hope this helps!
Answer:
See below
Step-by-step explanation:
I am not sure about number 22. I think that they are asking you to apply the same rules to the point (4, -7), if that is what they mean, the answer is (8,10)
Answer: Your answer is 3.77
Step-by-step explanation:
14m+25= G
so, you would plug in how many months the membership would cost.
14(6)= 84
then add the additional fee to join which was $25
84+25= 109
