The isotope Chromium decreases by half every month. The safe amount of Chromium in water is 3 milligrams per gallon. A plant that uses Chromium to aid in cooling and corrosion of pipes has 384 milligrams of Chromium placed in a decay pool. How many months would it take for there to be a safe level of Chromium? PL HELP M

Design a number line containing five (5) points2.benin, one of the smallest countries in africa, has a total area of 43,475 square miles. the population of the country was recently estimated at 10,160,555. about 3,657,790 people live in rural areas. the country has only about 870 miles of surfaced roads. a. round off the total population to the nearest hundred thousand people. b. round off benin’s area in square miles to the nearest thousand. c. round off the number of miles of surfaced roads to the nearest ten. d. round off the number of people who live in rural areas to the nearest million.

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =