How to add or subtract proper fractions- unlike?

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample

Hundred and tens tables to make 430 in five different ways

If two lines form congruent alternate interior angles with a transversal, then the lines