1. Give the nuclide symbol for calcium ion based on the following data:
Number of protons = 20
Number of neutrons = 20
Number of electrons = 18

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expressions 4s +9s represents the total number of items that will be displayed on s shelves. simplify this expression

Paint color preference children adults total 0.6 0.77 liked new paint color disliked new paint color 0.4 0.15 0.23 total 1.0 1.0 1.0 which value for x completes the conditional relative frequency table by column?

Can someone me i’m confused. will give brainliest and a whole bunch of points