Amanufacturer knows that their items have a normal distribution lifespan with a mean of 11.9 years in a standard deviation of 3.9 years. if 4 items are picked at random, 1% of the time their mean life will be less than how many years?

Which statement explains how you could use coordinate geometry to prove that quadrilateral abcd is a parallelogram? -5 -4 -3 -2 -1 t 1 2 3 4 prove that all sides are congruent and have slopes that are opposite reciprocals prove that segments ad and ab are congruent and parallel prove that opposite sides are congruent and have equal slopes prove that segments bc and cd are congruent and parallel

Is it greater than or less than7*3_9*2

Write the equations in logarithmic form 9^4=6,561