using the techniques from section 1.6 applications of linear systems, balance the following chemical reaction:
nahco3 + h3c6h5o7 -> na3c6h5o7 +h2o +co2

Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be 3. what sample mean would have a confidence level of 95% or a 2.5% margin of error?

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.