Find the lcd of the fractions, and then simplify the expression. assume that no denominator equals zero. 5/(3x^2y) - 4/(6xy^3
show all the steps so you can me understand (:

How can we find the measure of an exterior angle if we know the measurement of an interior angle

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?