9 : 2 = 18 : 4
As: 9 x 2 : 2 x 2 = 18 : 4
--------------------
36 : 8 = 18 : 4
As: 18 x 2 : 4 x 2 = 36 : 8
--------------------
72 : 16 = 18 : 4
As: 18 x 4 : 4 x 4 = 72 : 16
Answer:
1/2
Step-by-step explanation:
Slope = rise/run
Rise=1
Run=2
Rise/run=1/2
Answer:
Step-by-step explanation:
Given
--- The radius of each
Required
The area between them
See attachment for illustration of the question. (figure 1)
First, calculate the height of the equilateral triangle formed by the 3 radii (See figure 2)
Using Pythagoras theorem, we have:
Collect like terms
Take square roots
Expand
Split
Now, the area of the equilateral triangle can be calculated using:
Where
Next, is to calculate the area of the sector formed by 2 radii in each circle (figure 3).
Since the radii formed an equilateral triangle, then the central angle will be 60. So:
For the three circles, the area is:
Subtract the areas of the sectors (A2) from the area of the equilateral triangle (A1), to get the area between them.
Approximate
The percentage of those asked who favoured exactly one sportsperson is 75.
Given that, 78% of those asked were in favour of at least one of the three sportspersons. 50% of those asked favoured Saina, 30% favoured Dhoni, and 20% favoured Anand. If 5% of those asked favoured all three of them.
We need to find what percentage of those asked favoured exactly one sportsperson.
<h3>What is a Venn diagram?</h3>
A Venn diagram is an illustration that uses circles to show the relationships among things or finite groups of things. Circles that overlap have a commonality while circles that do not overlap do not share those traits. Venn diagrams help to visually represent the similarities and differences between two concepts.
Now, favoured exactly one sportsperson=50+30+20-[(30-50-20-5)+(50-30-20-5)+(20-50-30-5)]
=100+(45-5-65)
=100-25
=75
Therefore, the percentage of those asked who favoured exactly one sportsperson is 75.
To learn more about a Venn diagram visit:
brainly.com/question/1605100.
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