Answer:
Standard Deviation = 3.22
Variance = 10.36
Step-by-step explanation:
x P(x) x × P(x) x² x² × P(x)
19 0.20 3.8 361 72.2
10 0.20 2 100 20
11 0.30 3.3 121 36.3
12 0.20 2.4 144 28.8
13 0.10 1.3 169 16.9
____________________________________________
12.8 174.2 => Total
<em><u>Mean Formula</u></em>


<em><u>Variance Formula</u></em>

<em><u>Standard Deviation Formula</u></em>

I hope this helps you
7x-4x = -9-12
3x=-21
x= -7
3/4 and 9/12 are alike because they are both the same value. They are different because 3/4 is simplified while 9/12 is not.
The central angle below is 1
Answer:
A = L + E
Step-by-step explanation:
A = Assets
L = Liabilities
E = Equity