A scientist needs 10 liters of a 20% acid solution for an experiment, but she has only solutions of 5% and 40% concentrations. To the nearest tenth of a liter, how many liters of each solution 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)

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*

drop out of school or go to quizlet, quizlet is better

step-by-step explanation: