The correct answer is option A which is 
this expression is showing the graph given in the question.
<h3>What is a graph?</h3>
A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.
In the given question we can see the graph. The function is showing the graph given in the question.
As we put the values of x in the function we will get this type of symmetric graph shown. I also attached the graph I made on the graphing tool in the answer below.
To know more about graphs follow
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Answer:
B
Step-by-step explanation:
Answer:
-1 because when you add both functions thats what you get.
Answer:
The length of the diameter is 18 cm
Step-by-step explanation:
In this question, we are asked to calculate the diameter of a right cylinder, given that the radius and the height are equal and given the value of the surface area.
Mathematically, the surface area of a cylinder can be represented by the equation;
A = 2 π r( r + h)
since r = h, we can say h = r
Thus, the equation becomes;
A = 2 π r( r + r)
A = 2 π r(2r)
A = 4 π r^2
From the question, we can see that the value of A = 324 π
substituting this, we have;
324 π = 4 π r^2
4r^2 = 324
r^2 = 324/4
r^2 = 81
r = root of 81
r = 9 cm
The value of the diameter is two times the radius
Hence D = 2r = 2 * 9 = 18 cm
