Each person in a community was asked, "What is your favorite type of pet?" The pie chart below summarizes their responses.
1 answer:
Answer:
(a) Bird
(b) 40%
(c) 7%
Step-by-step explanation:
The pie chart is attached below.
Approximate the portion of each type of pet as follows:
Fish ≈ 15%
Bird ≈ 33%
Dog ≈ 17%
Cat ≈ 23%
Other ≈ 7%
None ≈ 5%
(a)
The pet category "Bird" was selected by approximately one-third of
the community.
(b)
The proportion of the community that chose Cat was, 23%.
The proportion of the community that chose Dog was, 17%.
So, the proportion of the community that chose Cat or Dog was:
Cat% + Dog% = 23% + 17%
= 40%
(c)
The proportion of the community that chose "Other" was approximately 7%.
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Answer:
i. 9
ii. 14
iii. 405
iv.
Step-by-step explanation:
The number of diagonals in a polygon of n sides can be determined by:
where n is the number of its sides.
i. For a hexagon which has 6 sides,
number of diagonals =
=
= 9
The number of diagonals in a hexagon is 9.
ii. For a heptagon which has 7 sides,
number of diagonals =
=
= 14
The number of diagonals in a heptagon is 14.
iii. For a 30-gon;
number of diagonals =
=
= 405
The number of diagonals in a 30-gon is 405.
iv. For a n-gon,
number of diagonals =
The number of diagonals in a n-gon is