Given that a=3,b=-5 and c=6.Evaluate the following expression. a(3c-b) 79
or
69
or
96

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

Carl is hanging pictures in his home. there is a space on a wall that has a width of 4 feet. carl has pictures with different widths. which picture width would fit in the space on the wall? a. 46 inches b. 60 inches c. 50 inches d. 54 inches