22. the average monthly high temperatures in moscow
for the first five months of the year are shown :
jan. -6*c
feb. -5*c
mar. 0
april 8*c
may 18*c
a. what is the average temperature for these 5 months?
b. explain how you found the answer to part a.
c. the expression 9c+160/5 can be used to convert
temperatures in celsius to fahrenheit. use this
expression to convert the average monthly temperature
for january to fahrenheit.

5because it isyeah i know it is

Ok here we go ..there are plenty of ways to solve such math problems but we will go for the smartest and easiest ..5x+2y=7  -2x+6y=9we rearrange them into the following ..by multiplying the 1st equation by 2 it becomes 10x + 4y = 14we rearrange it and so it becomes 10x = 14 - 4yas for the second equation we multiply it by 5 and rearrange it so it becomes as to the following ..-10x + 30y = 45rearranging so 10x = 30y -45now 10x equals both 14 - 4y and 30y -45so   14 - 4y = 30y -4531 = 26yy= 31/26 = 1.19 or around 1.2so by now we can calculate x easily as  -2x+6y=9so 2x = 6y -9 = 6 * 31/26 - 9 = -1.84  then x = - 0.92 or around -0.9best luck!