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Given:
The scale factor between two circles is .
To find:
The ratio of their areas.
Solution:
We know that, all circles are similar.
The ratio of the areas of similar figures is equal to the ratio of squares of their corresponding sides or equal to the square of ratio of their corresponding sides.
The scale factor is the ratio of the corresponding sides.
Ratio of areas of circles = Square of scale factor between two circles
Therefore, the correct option is D.
The total profit received for all mobile phone manufacturers for all carriers was 1.54 billion
Step-by-step explanation:
Given,
Profit received = 32%
Total profit received = $4.8 billion
Amount of profit received for mobiles = 32% of total profit
Amount received =
Amount received =
Amount received = 1.536 billion
Rounding off
Amount received = 1.54 billion
The total profit received for all mobile phone manufacturers for all carriers was 1.54 billion
Keywords: percentage, division
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Answer:
B. 3.16
Step-by-step explanation:
1) formula of the required distance is:
2) if A(3;-8) and B(0;-9), then according to the formula above:
d≈3.16