Answer:
Step-by-step explanation:
Euler's formula is
V - E + F = 2
Givens
V = 15
E = 15
F = ?
Solution
15 - 15 + F = 2
F = 2
I'm not sure this makes sense, but it is what the formula gives you.
Show me the picture for I can help u
Answer:
0.4
Step-by-step explanation:
Given
60 % wear neither ring nor a necklace
20 % wear a ring
30 % wear necklace
This question can be Solved by using Venn diagram
If one person is choosen randomly among the given student the probability that this student is wearing a ring or necklace is


The sum of probabilty is equal to 1 because it completes the set
Therefore the required probabilty is 0.4
If I’m correct, then the answer is D. Someone please correct me if I’m wrong.
<u>Answer:</u>
<h2>D. 30</h2>
<u>Explanation:</u>
292/100×9.9 = 2.92×9.9 = <u>28.908</u>
30 is closest to 28.908