Answer:
Step-by-Step-explaination
9(−5ℎ) = - 45h
Answer:
n squared - 10n + 24
Step-by-step explanation:
2040 = n/2(20+(n-1)4)
4080 = n(20+4n-4)
4080= 20n +4n^2 -4n
1020 = 4n + n^2
n^2 +4n -1020 =0
use common formula (can't write out so just look at answers. sorry)
which gives answers of n=-34 and n=30. since n can only be positive, n=30 so there are 30 rows. I liked that challenge
111,000 because you do 30000+32000+49000.
X = 3.5
9+5=14
14/4= 3.5
Hope this helps! :)
