Plz help

1.3

Step-by-step explanation:

You have 1 whole on the side, and then you have 3 strips on the left side and each strip is 10=1

so if you have 3 strips it's like having 30 piecesit's, but in other words, its 3tenths/0.3

so your answer is 1.3

1.3

Step-by-step explanation:

it is 3 columns out of 10

and 10 column=1

1 column=1/10=0.1

3 columns=3/10=0.3

1+0.3=1.3

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons