Atoms of which two elements have a combined total of 34 protons A. Lithium, Li, and Carbon, C
B. Calcium, Ca, and Silicon, Si
C. Argon, Ar, and Neon, Ne
D. Potassium, K, and Beryllium, Be

If a is a nonzero real number then the reciprocal of a is

The table shows the number of students who signed up for different after school activities. activity students cooking 9 chess 4 photography 8 robotics 11 select the true statements about the information in the table.

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels. ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0