Apharmacist whishes to mix a solution that is 6% minoxidil. she has on hand 100 ml of 4% solution and wishes to add some 8% solution to obtain the desired 6% solution. how much 8% solution should she add?

She would need 100 ml of the 8% solution

Step-by-step explanation:

You can always answer these questions using a proportion. The numerator will represent the amount of Minoxidil, and the denominator will represent the total amount of solution

She already ha 100 ml of a 4% solution. That means that she has 4 ml of Minoxidil already

We can multiply both sides by 100 for simplicity

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11

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step-by-step explanation: