Answer:
3
Step-by-step explanation:

And,
$ \sum (2i+1)= \sum (2i)+ \sum_{i=1} ^{4} (1) $
$=\sum_{i=1} ^{4}(2i) + 1+1+1+1 $
$=\boxed{\Big(\sum_{n=1} ^{4}(2n)\Big) +4}.... \text{Variable in Summation doesn't matter}$
Hence the difference is 3.
13x-91=12
+91=+91
__________
13x = 103
___. ___
13. 13
X= 7.92 or 7.9
Answer:
11880 ft
Step-by-step explanation:
12 in = 1 ft
142560/12 = 11880