A process creates a radioactive substance at the rate of 1 g/hr, and the substance decays at an hourly rate equal to 1/10 of the mass present (expressed in grams). Assuming that there are initially 20 g, find the mass S(t) of the substance present at time t, and find limit→[infinity] AS(t).

120,630,890

step-by-step explanation:

110+10=120,620+10=630,880+10=890

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.

the answer is c.the valence of the atoms combine .

ok whats the question if not i cannot you i need question and need a thing to answer