Answer:
n = 9
Step-by-step explanation:
20 + 18 + ... + 6 + 4
---------------------------
a = 20 ; d = -2 ; n = ?
--------
4 = 20 + (n-1)(-2)
-16 = (n-1)(-2)
---------
n-1 = 8
n = 9
-------
S(9) = (9/2)(20+4)
S(9) = 4.5*24
S(9) = 108
Answer:
1 3/4 = 7/4
(7/4) / (1/8)
(7/4) * (8/1) = 56/4 = 14
D,14
Step-by-step explanation:
219+159≤x≤369+309
The answer can then be simplified to
378≤x≤678
Answer:
Step-by-step explanation:
Alright, lets get started.
In the morning Cynthia completed the work = 
During her lunch break, she completed = 
So, she completed total of her work : 
So, we need to add these two fractions.
First making common denominator , so

So, adding = 
It means she had finished
fraction of het to do list. : Answer
Hope it will help :)
Answer:
153.86 square units OR 49π OR 154 square units
Hope that helps!
Step-by-step explanation:
A = 49 x pi
A = 153.86
Hope that helps!