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levacccp [35]
2 years ago
9

Prove the identity (x+y)^-2xy=x^2+y^2

Mathematics
1 answer:
Natali5045456 [20]2 years ago
8 0

proooooof is in picture....

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How do you tell if it's possible to make a triangle out of these side lengths?<br> PLZ HELP!!!!!
Nastasia [14]

Answer:

A

Step-by-step explanation:

square root of 73 is about 8.5

square root of 10 is about 3. multiply by 3, you get 9.

square root of 7 is about 2.6. multiply by 5, you get 13.

when determining if you can make a triangle, if all variants of two sides can add up to be greater than the third side, you can make the triangle. so 8.5+9 > 13; 13+9 > 8.5; 13+8.5 > 9. this means it can make a triangle and all you have to do is order the sides.

8.5 is smallest which corresponds to angle c because it's opposite. 9 goes to angle a, then finally 13 goes to angle b. thus, angles c, a, b is the order.

side note: the smallest side length will always correspond with the smallest angle.

hope this helps :)

3 0
3 years ago
If my grade is an 72 and I get a 100 on a test, how will that affect my grade? (What will my grade be after?)
pychu [463]

Answer: It depends on what categories your teacher has and what percent of your grade it is worth. I would recommend an online grade calculator

4 0
3 years ago
Read 2 more answers
The perimeter of the tennis court is 228 feet. what are the dimensions of the court?
julsineya [31]
From a reliable source, the ratio between the width and the length of the tennis court is equal to 5:12. We let x be the common factor of the given ratio such that the width is equal to 5x and the length is equal to 12x. 

The perimeter of the figure is calculated through the equation,
              P = 2L + 2W
where P is the perimeter, L is the length, and W is the width. 

Substituting the derived expressions to the equation above.

             228 = (2)(12x) + 2(5x)
                x = 114/17
The width and length are calculated below.
     Width = (5)(114/17) = 570/17 ft = 33.53 ft
     Length = (12)(114/17) = 1368/17 ft = 80.47 ft

Thus, the dimensions are approximately 33.53 ft and 80.47 ft. 
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3 years ago
3 x 7/10 = ?
kap26 [50]

Answer:

a

Step-by-step explanation:

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3 years ago
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To see what parents in her neighborhood think about proposed changes to their local park, a parent walks through the neighborhoo
Anvisha [2.4K]
B. Convenience sampling
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3 years ago
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