Using the following data set, what is the mean of the tight soil
(6 13 8)

a 9

b 19

c 12

d 15

Which features are shown in the image? check all that apply. folds o anticlines o synclines o normal faults ostrike-slip faults

City a and city b had two different temperatures on a particular day. on that day, four times the temperature of city a was 8â° c more than 3 times the temperature of city b. the temperature of city a minus twice the temperature of city b was â’3â° c. what was the temperature of city a and city b on that day? city a was 5â° c, and city b was 4â° c. city a was 3â° c, and city b was â’1â° c. city a was 8â° c, and city b was â’3â° c. city a was 5â° c, and city b was â’5â° c.

Can someone me with questions 12 and 13 plz.