Evaluate u + xy, for u = 1, x = 3, and y = 6.

hi! so the first thing you want to do is plug in for your variables.

so when you do that you get:

1+3(6)

according to PEMDAS, multiplication comes first.

6*3=18

so you’re equation should now look like this;

1+18

and then add the numbers together.

your answer should be 19.

hope this helps!!

An  atom  (ours, not carroll's) consists of a positively charged  nucleus, surrounded by one or more negatively charged particles called  electrons. the positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen. although the nucleus is heavy, it is quite small compared with the overall size of an atom. the radius of a typical atom is around 0.1 to 0.25 nanometres (nm), whereas the radius of a nucleus is about 10-6  nm.  *  if an atom were enlarged to the size of the earth, its nucleus would be only 200 feet in diameter and could easily rest inside a small football stadium.read more on -