23. If a+b+c= 0 find the value of .

1/1+x^a+x^-b + 1/1+x^b+x^-c + 1/1+x^c+x^-a​

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

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

Can someone me with this graph problem by the way i need to know the answers by today since this assignment is due ! !