Answer:
<em>A cross section is the intersection of a </em><em><u>solid</u></em><em> and a </em><em><u>plane.</u></em> 
Step-by-step explanation:
<em>A cross section</em> is the geometric place formed when an 3-D object (<em>solid</em>) is cut straight.
Imagine the shape that you can see when you cut a piece of cheese with a knife. If the piece of cheese is a cube, the resultant shape, the cross section, will be a square.
Also, you can imagine the shape formed when you cut a right cylinder (the solid) with a plane parallel to the base. In this case, the cross section will be a circle.
Depending on the form of the solid and the angle of the plane, different cross sections may be obtained.
 
        
                    
             
        
        
        
Answer:
b. 1:4
Step-by-step explanation:
Area of cylinder A = πr²h = π(1.1).4 = 4π
Area of cylinder B = πr²h = π (2.2).4 = 16π
Ratio of their volumes = 4π/16π = 1/4 = 1:4
 
        
             
        
        
        
Answer:
A
Step-by-step explanation:
If you use BIDMAS or BODMAS the first rule is brackets and inside the brackets you add and is therefore the first operation to use. 
 
        
             
        
        
        
The graph of a rational function differs from that of other functions with the existence of asymptotes
<h3>Graph of rational functions</h3>
The properties of the graph of a rational function include;
- The graph of a rational function never crosses its vertical asymptote
- It crosses its horizontal or slant asymptote
- The graph of the reciprocal function y = 1/x or y = k/x is a rectangular (or right) hyperbola of which asymptotes are the coordinate axes
The graph of a rational function differs from that of other functions with the existence of asymptotes.
Learn more about rational functions here:
brainly.com/question/1851758
#SPJ1
 
        
             
        
        
        
Answer:
5/8
Step-by-step explanation:
Subtract the total computers from the old computers.
40-15=25
Then put the number of new computers over the total computers
25/40
Then, simplify
5/8