Answer:
angle A=30°
Step-by-step explanation:

By definition of percentages, we conclude that Montraie has 10 coins saved in his box that come from a collection with a total of 50 coins.
<h3>How to calculate the quantity of coins in a collection</h3>
In this question we know the quantity of coins in a box and such coins are part of the <em>coin</em> collection. By definition of percentage we have the <em>total</em> quantity of coins in the collection:
x = 10*(100/20)
x = 50
By definition of percentages, we conclude that Montraie has 10 coins saved in his box that come from a collection with a total of 50 coins.
To learn more on percentages: brainly.com/question/13450942
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Find Area of the circle:
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Area of a circle = πr²
Area of the largest possible circle = π x(12 ÷ 2)²
Area of the largest possible circle = 113.10 ft²
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Find Area of the square board:
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Area of a square board = Length x Length
Area of the square board = 12 x 12
Area of the square board = 144 ft²
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Find area of the remaining board:
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Area of the remaining board = 144 - 113.10
Area of the remaining board = 30.90 ft²
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Answer: The area of the remaining board is 30.90 ft².
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Answer:
sum is 180 degrees i hope this helps
Step-by-step explanation:
Answer:X=34
Step-by-step explanation:
ok it is easy