James’ mom checks up on the plants every so often to ensure that they won’t die. However, she’s going on vacation for the next 15 days. If James forgets to water the plants for 3 or more days the plants will die. Find the probability that James keeps the plants alive. Also, let Y be the random variable corresponding to the number of days James forgets to water the plant (Y ≤ 3) describe the PMF of Y.

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?