Answer: A proportion is simply a statement that two ratios are equal.
Example: 2:6 = 1:3
To get that you do this: 2:6 ÷ 2:2 = 1:3
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Example 2: 5:10 = 1:2
To get that you do this: 5:10 ÷ 2:2 = 1:2
Answer:
A. 
Step-by-step explanation:
Given:
The regular polygon is a decagon having 10 sides.
Perimeter of the given polygon is,
.
We know that, perimeter of a regular polygon of
sides is given as,
where,
is the length of each side.
Here, 
Plug in these values and solve for
. This gives,

Therefore, the side length of the given polygon is 
Answer:
What is the the given line?
Explanation:
Step-by-step explanation:
everything can be found in the picture
3 multiples of 10 that have 3 in them are 30, 300, and 3000