This is how i worked it out.
Good Luck
Answer:
Johnny is wrong.
![A \cup B = \left\{a,b,c,d,e,f,g,h\right\}](https://tex.z-dn.net/?f=A%20%5Ccup%20B%20%3D%20%5Cleft%5C%7Ba%2Cb%2Cc%2Cd%2Ce%2Cf%2Cg%2Ch%5Cright%5C%7D)
Step-by-step explanation:
Johnny is wrong.
A better definition would be:
is the set of all elements that belong to at least one A or B.
So, the elements that belong to both A and B, like c and d in this exercise, also belong to
.
So:
![A \cup B=\left\{a,b,c,d,e,f,g,h\right\}](https://tex.z-dn.net/?f=A%20%5Ccup%20B%3D%5Cleft%5C%7Ba%2Cb%2Cc%2Cd%2Ce%2Cf%2Cg%2Ch%5Cright%5C%7D)
Answer:
the answer is 6
Step-by-step explanation:
the little triangle is half the size but with the same degree
Answer:
Any value of x makes the equation true.
Step-by-step explanation:
all real numbers
interval notation:(-infinity, infinity)
pls mark as brainliest lol
Answer:
No student liked only Nokia
Step-by-step explanation:
The information can be illustrated as shown on the Venn diagram.
The number of students who liked only Nokia is x.
The sum of all regions in the Venn diagram should be 40.
We add all to get:
![5 + 5 + 30 + x = 40](https://tex.z-dn.net/?f=5%20%2B%205%20%2B%2030%20%2B%20x%20%3D%2040)
![40 + x = 40](https://tex.z-dn.net/?f=40%20%2B%20x%20%3D%2040)
![x = 40 - 40](https://tex.z-dn.net/?f=x%20%3D%2040%20-%2040)
![x = 0](https://tex.z-dn.net/?f=x%20%3D%200)
Therefore no one liked only Nokia