scientist needs 10 liters of a 20% acid solution for an experiment, but she has only a 5% solution and a 40% solution. To the nearest tenth of a liter, about how many liters of the 5% and the 40% solutions should she mix to get the solution she needs? Choose the equation to match the situation. A. (0.20)(10) = 0.05x + 0.40x B. (0.20)(10) = 0.05x + 0.40(10 – x) C. (0.20)(10) = 0.05(10) + 0.40(10 – x) D. (0.20)(10) = 0.05(10 – x) + 0.40(10 – x)

B

Step-by-step explanation:

Total litres = 10

Litres of 5% acid: x

Litres of 40% acid: 10-x

(0.05)(x) + (0.40)(10-x)

10 litres of 20% acid: (0.20)(10)

For same results,

(0.20)(10) = (0.05)(x) + (0.40)(10-x)

step-by-step explanation:

through just a quick inspection, one can see that the graph of this cubing function starts in quadrant iii and ends in quadrant i.   when x = 0, y = 3, so the y-intercept is (0, 3).

if graphs are part of the problem statement, share them.   .

468

step-by-step explanation: