Answer: f^-1(x) = (y - 7)/11
Explanation:
f(x) = 11x + 7
y = 11x + 7
y - 7 = 11x
(y - 7)/11 = x
Answer:
20 45¢ stamps
Step-by-step explanation:
Since 100¢ = $1,
you have to convert $9 into 900¢
900 ÷ 45 = 20
So you can buy 20 stamps
Hope this helps! :)
The vertex form of the function f(x) is 
.
<h2>Given </h2>
Function; 
<h3>What is the vertex form of function?</h3>
The vertex of a parabola is the point at which the parabola passes through its axis of symmetry.
The standard equation which represents the vertex form of the function is;
Where h and k are vertexes of the given parabola.
The function is in vertex form;
Hence, the vertex form of the function f(x) is .
To know more about the Vertex form lick the link given below.
brainly.com/question/9070346
Answer: 6:5
Step-by-step explanation:
There are 6 boys and 5 girls
Answer:
1
Step-by-step explanation:
Given the question above :
The probability distribution :
X : ___ 1 ___ 2 ___ 3 ___ 4 ____ 5
P(x): _ 0.1 __ 0.1 __ 0.6 _ 0.1 __ 0.1
The Variance : Var(X) = (Σx²*p(x)) - μ²
μ = E(X) = Σ(X * p(x)) :
Σ(X * p(x)) = (1*0.1)+(2*0.1)+(3*0.6)+(4*0.1)+(5*0.1)
μ = 3
Var(X): [(1^2*0.1)+(2^2*0.1)+(3^2*0.6)+(4^2*0.1)+(5^2*0.1)] - 3²
= 10 - 9
= 1
Hence. Variance = 1
