1/2 over -2/5 + (-1/4)
10/20 over -8/20 + (-5/20)
1 5/20 + (-5/20)
1
The answer is 1
Answer:
5.20
Step-by-step explanation:
X : ______ 8 ____ - 4
P(X) : ___ 0.75 __ 0.25
The expected mean E(x) :
E(x) = ΣX / n
n = sample size = 2
E(x) = (8*0.75) + (-4*0.25)
E(x) = 6 - 1
E(x) = 5
The standard deviation : sqrt(Var(x))
Var(x) = Σx²p(x) - E(x)²
Var(x) = (8^2 * 0.75) + (-4^2 * 0.25)) - 5^2
Var(x) = ((64 * 0.75) + (16* 0.25)) - 25
Var(x) = (48 + 4) - 25
Var(X) = 27
Standard deviation = sqrt(27)
Standard deviation (x) = 5.1961524
Standard deviation = 5.20
Answer:
<em>A</em>
Step-by-step explanation:
My reasoning is because right above the question it says "Given: DEF" meaning that you would go in order of <em>DEF</em><em>.</em>
<em>So</em><em>,</em> looking at the triangle, <em><u>D would be 10, E would be 13, and F would be 15.</u></em>
Answer:
D.347.45cm²
Step-by-step explanation:
The formula to find the surface area of a rectangular prism is:

Let's break down our variables:
Length = 11.73cm
Width = 9.08cm
Height = 3.23cm
Let's substitute the values:



cm²