# What plus what plus what equal 823

2 months ago

## Solution 1

Guest #3389
2 months ago
The answer would be 821+1+1. So as a result that would give you 823.

Hope that helped!

## Solution 2

Guest #3390
2 months ago
711+112=823. You can pick any number an just subtract it by 823

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Regards
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Question 1:
A) No; 9.3 or 20.6.
B) Yes, because the triangles are similar.
C) No, because the triangles will not necessarily be similar.

There is not enough information to answer Questions 2 or 3.

Explanation for Question 1:
A) We are not told which side is the longest, so these two sides could be placed anywhere in the Pythagorean theorem.Â  They could either be both legs, or one could be the hypotenuse:

Hypotenuse:Â 13Â² + bÂ² = 16Â²
Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â 169 + bÂ² = 256
Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â 169 + bÂ² - 169 = 256 - 169
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Â  Â  Â  Â  Â  Â  Â  Â  Â  Â 425 = cÂ²
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C) Simply adding a value to each side will not preserve similarity.Â  For example, if we had a triangle with sides 3, 4, and 5, adding 2 to each side would give us 5, 6 and 11.Â  These do not have the same ratios; 3/5 is not the same as 4/6 or 5/11.
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Jason is covering an ottoman with fabric. The ottoman is in the shape of a rectangular prism that is 37 cm long, 21 wide, and 30 cm high. How much fabric is needed to cover the sides and top of the ottoman? Explain your strategy.
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We know that
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surface area=area of the base+perimeter of the base*height

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4257 cmÂ²

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