10 and
In acute triangle ABC, side b = 12, side c =
mLA = 42. Find side a.

20

Step-by-step explanation:

I'm not completely sure, however.

12+10 = 22

42-22 = 20

there would be 365 different 4 digit numbers

step-by-step explanation:

i belive that it is 365 because i asked google

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads