875 divided by 38 = 23 r1 how do i know the answer is reasonable

Solve 3x-18=2y and 5x-6y=6 by elimination show work

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

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer