Without finding the sum, determine if the sum of -4 + 2 will be positive or negative

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Which of those sequences is a geometric sequence