So if you want to add
we distribute
a(b+c)=ab+ac so
-2(m+n-4)=-2m-2n+8
5(-2m+2n)=-10m+10n
n(m+4n-5)=mn+4n^2-5n
so total we ahve
-2m-2n+8-10m+10n+mn+4n^2-5n
group like terms
4n^2+-2m-10m-2n+10n-5n+mn+8
add like temrs
4n^2-12m+3n+mn+8
The length of a diagonal is nine inches because it is the same length as the side length.
B and C are the correct answers
Answer:
19: The difference between the temperature in Fair Banks and Barlow is 3°F
20: -13°F, -10°F, 15°F, 24°F.
Step-by-step explanation:
I'm assuming that by "compare", it means to find the difference between temperatures in question 19. If it means something else, let me know and I'll try and help you find it.
