Answer:
There is reason to suspect that the poll is biased.
Step-by-step explanation:
This poll is being sponsored by the Idaho Potato Commission, and the favorite vegetable was found to be the potato according to the poll. This might be seen as a conflict of interests since it is plausible to believe that the Idaho Potato Commission would have wanted the potato to be selected as the favorite vegetable. Therefore, there is reason to suspect that the poll is biased.
Answer:
The technician can combine 10 liters of pure acid with 30 liters of 20% acid to get the desired concentration
Step-by-step explanation:
For pure acid, the concentration will be 100%
Let the liters of pure be a and the liters of 20% be b
Since we want 40 liters of total;
a + b = 40 ••••••••(i)
Also,
100% of a + 20% of b = 40% of 40
a + 0.2b = 16 •••••(ii)
From ii , a = 16-0.2b
Put this into i
16-0.2b + b = 40
0.8b = 40-16
0.8b = 24
b = 24/0.8
b = 30
Since a + b = 40
a = 40 - b
a = 40-30
a = 10
15 15 15 15 15 15 15 15 15 15
Answer:
I thought I answered this before
-2
Step-by-step explanation: