Make r the subject of the formula t = r / r - 1​

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?