<span><span> 5n2+10n+20</span> </span>Final result :<span> 5 • (n2 + 2n + 4)
</span>
Reformatting the input :
Changes made to your input should not affect the solution:
(1): "n2" was replaced by "n^2".
Step by step solution :Skip Ad
<span>Step 1 :</span><span>Equation at the end of step 1 :</span><span> (5n2 + 10n) + 20
</span><span>Step 2 :</span><span>Step 3 :</span>Pulling out like terms :
<span> 3.1 </span> Pull out like factors :
<span> 5n2 + 10n + 20</span> = <span> 5 • (n2 + 2n + 4)</span>
Trying to factor by splitting the middle term
<span> 3.2 </span> Factoring <span> n2 + 2n + 4</span>
The first term is, <span> <span>n2</span> </span> its coefficient is <span> 1 </span>.
The middle term is, <span> +2n </span> its coefficient is <span> 2 </span>.
The last term, "the constant", is <span> +4 </span>
Step-1 : Multiply the coefficient of the first term by the constant <span> <span> 1</span> • 4 = 4</span>
Step-2 : Find two factors of 4 whose sum equals the coefficient of the middle term, which is <span> 2 </span>.
<span><span> -4 + -1 = -5</span><span> -2 + -2 = -4</span><span> -1 + -4 = -5</span><span> 1 + 4 = 5</span><span> 2 + 2 = 4</span><span> 4 + 1 = 5</span></span>
if Martha is not earning money to pay it back, it would be negative. Each week, she loses -9.72 dollars. so -9.72 x 3 weeks = your problem. I'll let you take it from there and solve the rest
Change/original * 100 is percent change formula
4/10 * 100 = 40% increase
Answer:
σˆ =
sPn
i=1 X2
i
2n
Step-by-step explanation:
To obtain, the maximum likelihood ratio, we use the following method.
l(σ) = Xn
i=1 "
− log 2 − log σ −
|Xi
|
σ
#
Let the derivative with respect to θ be zero:
l
0
(σ) = Xn
i=1 "
−
1
σ
+
|Xi
|
σ
2
#
= −
n
σ
+
Pn
i=1 |Xi
|
σ
2
= 0
and this gives us the MLE for σ as
σˆ =
Pn
i=1 |Xi
|
n
Again this is different from the method of moment estimation which is
σˆ =
sPn
i=1 X2
i
2n
As our answer
