Answer: D
Step-by-step explanation:
Standard Deviation σ2 =
Σ(xi - μ)2/N
=(1 - 5.3)2 + ... + (9 - 5.3)2/10
=68.1/10
= 6.81
σ = √6.81
= 2.60959767014
B) σ2 =
Σ(xi - μ)2/N
=(3 - 61.7)2 + ... + (99 - 61.7)2/10
=58414.1/10
= 5841.41
σ = √5841.41
= 76.429117488036
C) (1 - 11.4)2 + ... + (1 - 11.4)2/10
=8758.4/10
= 875.84
σ = √875.84
= 29.59459410095
D) (79 - 79)2 + ... + (79 - 79)2/10
=0/10
= 0
σ = √0
= 0
I hope this helps, mark as Brainliest please.
Answer:
x= 20 i think sorry if it's wrong⊙﹏⊙
Answer:
<em>The coefficient of the squared expression in the parabolas equation will be 5.</em>
Step-by-step explanation:
<u>The vertex form of parabola</u> is: 
, where 
is the vertex point and 
is the coefficient of 
term.
The vertex is given as 
. That means, 
and 
So, the vertex form will be: 
Given that, when the x-value is 4, the y-value is 3. So, plugging these values into the above equation, we will get.....
Thus, the coefficient of the squared expression in the parabolas equation will be 5.
Hello,
we can understand this in 2 ways ==>necessity of parenthesis.
1)
10²*x=500
==>x=500/100
==>x=5
2)
10^(2x)=500
==>2xln(10)=ln(500)
==>x=ln(500)/(2ln(10))
==>x=1,3494850021680094023931305526378....
