Find the values of a and z: 4x^15+8x^15=ax^z

What properties allow transformation to be used as a problem solving tool

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

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.