The time between seeing the lightning and hearing the thunder is s seconds. The distance d you are from lightning is approximate
2 answers:
Answer:
Step-by-step explanation:
Given : The time between seeing the lightning and hearing the thunder is s seconds.
The distance d you are from lightning is approximately equal to one-fifth of s seconds.
To Find: Which direct variation equation represents this situation?
Solution:
d denotes the distance
s denotes The time between seeing the lightning and hearing the thunder
Since we are given that the distance d you are from lightning is approximately equal to one-fifth of s seconds.
Hence the direct variation equation represents this situation is
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Answer:
31/40
Step-by-step explanation:
The question is incomplete. Here is the complete question with appropriate diagram.
The circle below has an area of 314 square centimeters, and the square inside the circle has a side length of 2 centimeters.
What is the probability that a point chosen at random is in the blue region?
Given the area of the circle to be 314cm², we need to get the diameter of the circle first since the diameter of the circle is equivalent to length of the side of the square inscribed in it.
Using the formula Area of a circle = πr²
314 = 3.14r²
r² = 314/3.14
r² = 100
r = 10 cm
Diameter of the circle = 2*10 = 20 cm
Area of a square = Length * length
Area of the outer square = 20*20 = 400cm²
Area of the inner square with side length 2cm = 2*2 =4cm²
Area of the shaded region = Area of the square - Area of the inner square
= 314-4 = 310cm²
The probability that a point chosen at random is in the blue region = Area of the shaded region/total area of the outer square
= 310/400
= 31/40
