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An equilateral triangle and a square are inscribed in a circle as shown.  is isosceles. The triangle and square share a common vertex. What is the number of degrees in the measure of the angle indicated by the question mark?

 

 May 18, 2020
 #1
avatar+976 
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Please fix your latex, and add the image.

 May 18, 2020
 #2
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A merchant offers a large group of items at  off. Later, the merchant takes  off these sale prices and claims that the final price of these items is  off the original price. As a percentage of the original price, what is the difference between the true discount and the merchant's claimed discount? (Your answer should be a positive difference.)

 May 18, 2020
 #3
avatar+976 
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Again. I can not see your numbers.

hugomimihu  May 18, 2020
 #4
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A merchant offers a large group of items at 30% off. Later, the merchant takes 20% off these sale prices and claims that the final price of these items is  50% off the original price. As a percentage of the original price, what is the difference between the true discount and the merchant's claimed discount? (Your answer should be a positive difference.)

 May 18, 2020
 #5
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A merchant offers a large group of items at 30% off. Later, the merchant takes 20% off these sale prices and claims that the final price of these items is 50% off the original price. As a percentage of the original price, what is the difference between the true discount and the merchant's claimed discount? (Your answer should be a positive difference.)

 May 18, 2020
 #6
avatar+976 
0

So we have an item price x, and 30% off means the price is 0.7x, and another 20% off is 0.7 * 0.8x = 0.56x.

 

So I'm pretty sure it's 56 percent, so 56-50 = 6%.

 

If x is 100, the first discount makes it 70, and the second 0.8 * 70 = 56.

 

If you don't understand anything feel free to ask!

hugomimihu  May 18, 2020
 #7
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When the length of a rectangle is increased by 20% and the width increased by 10%, by what percent is the area increased?

 May 18, 2020

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