The numbers 20, 21, and c are a Pythagorean triple.

What is the value of c?

A.
41

B.
29

C.
25

D.
22

Question

The numbers 20, 21, and c are a Pythagorean triple.  

 

What is the value of c?
	
	
 
A.
	41
	
 
B.
	29
	
 
C.
	25
	
 
D.
	22

noseboy908 · Answer

When finding missing values here, the specified letter is crucial. Thinking of a right triangle, what are the two sides often called that border the right angle? What letters are used to describe them frequently?

anonymous · Answer

See I suck at the pathorgeon theory and I can't solve it... I dont understand

praxer · Answer

20^2+21^2=841=29^2 hence the side c is 29

noseboy908 · Answer

Not a problem. Ignoring Praxor's blatant answer, the sides I've mentioned are amost always represented by the variables a and b. "c" is almost always the longest side. Now, knowing that, can you state the Pythagoras theorm please?

anonymous · Answer

Was he correct? @noseboy908

anonymous · Answer

a^+b^=c^

praxer · Answer

I am correct a^2+b^2=c^2 is the pythagorean theorem. http://en.wikipedia.org/wiki/Pythagorean_theorem

anonymous · Answer

Okay Thank you!

praxer · Answer

Welcome... :)

noseboy908 · Answer

He is indeed correct.

anonymous · Answer

Evaluate the expression by using the given values of the variables.

 

y ÷ 3 • 2 – 8 ÷ x + 5 where x = 4 and y = 12
	
	
 
A.
	5
	
 
B.
	9
	
 
C.
	11
	
 
D.
	21

noseboy908 · Answer

Alright. To begin, you need to substitute your given x and y values in for x and y in your equation. Please do that, but don't solve anything yet. Just restate the equation with the new numbers in place of the variables please.

anonymous · Answer

ok

anonymous · Answer

x would be 4 and y is 12

noseboy908 · Answer

Yep. So fill those in.

anonymous · Answer

.... how would that be?

noseboy908 · Answer

What I mean is to, in the place of y in the original equation, place what you're told y is equal to, 12. And do the same for x.

anonymous · Answer

oh oh oh like this 12 ÷ 3 • 2 – 8 ÷ 4+ 5

anonymous · Answer

and then i dont know after that

anonymous · Answer

the answer is 11

noseboy908 · Answer

The most important step now is to use the order of operations correctly. And yes, you're correct.

anonymous · Answer

Thanks i have a few more

noseboy908 · Answer

Ask away. I have a little time left.

anonymous · Answer

|dw:1398307512757:dw|

anonymous · Answer

A.
	

–15
	
 
B.
	

–10
	
 
C.
	3
	
 
D.
	8

noseboy908 · Answer

Alright. To begin, our overall goal is to isolate the z. So, how do we move the two to the opposite side?

anonymous · Answer

multiply?

noseboy908 · Answer

Yep. What do you get when you do?

anonymous · Answer

18

noseboy908 · Answer

No, right after you multiply the two, what does the equality become?

anonymous · Answer

umm.. Could you show me?