Asample of tritium-3 decayed to 94.5% of its original amount after a year. (a) what is the half-life of tritium-3? (b) how long would it take the sample to decay to 20% of its original amount?

The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1387 grams and standard deviation 161 grams. what is the probability that a randomly selected broiler weighs more than 1,425 grams?

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

Which of the following equations are equivalent to -2m - 5m - 8 = 3 + (-7) + m? -15m = -4m -7m - 8 = m - 4 -3m - 8 = 4 - m m - 4 = -7m - 8 -8 - 7m = -4 + m -8 - 3m = 4 - m