The solution is where the two lines cross each other which is (2.3, 4.1)
To graph the lines replace x with a number and solve for y, so this at least twice for each equation. This will give you points to use to draw the lines.
The answer is C and D. From the result, we can use this to represent the whole customer. But the percent calculation need to use the number of customers divided by total of 75, not 100.
250 mg / 100 mg = 2.5 ml
5 ml / 2.5 ml = 2
1/2 teaspoon
Answer:
1 : 4
Step-by-step explanation:
Let x represent the amount of 30% solution for 1 unit of 5% solution. Then the amount of acid in the mix is ...
0.30x + 0.05·1 = 0.10·(x +1)
0.30x + 0.05 = 0.10x + 0.10 . . . . eliminate parentheses
0.20x = 0.05 . . . . . . . . . . . . . . . . subtract 0.05+0.10x
x = 0.05/0.20 = 1/4
That is, the ratio x : 1 is 1 : 4.
