Question

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

Answer 1

I will give you a medal :)

Answer 2

For a Pythagorean triple (x,y,z), \(x^2+y^2=z^2\)

Answer 3

\[20^2+21^2=c^2~~~~~c=?\]

Answer 4

Im so confused ....

Answer 5

The formula for a Pythagorean triple is \[a^2+b^2=c^2\] look at the angle below...

where a and b are the legs of the triangle, and c is the hypotenuse.

Every such a triangle must fit \[a^2+b^2=c^2\]

Answer 6

In your case, you are told that 20, 21 and c is a Pythagorean triple, so it therefore must fit
\[20^2+21^2=c^2\]
correct ?

Answer 7

Ok ? But theres numbers for the answers .

Answer 8

yes, can you solve for c, in the equation below?
\[20^2+21^2=c^2\]

Answer 9

Ummmmm ... Im bad at math ....

Answer 10

you are given

(I am not going to go off the way from assuming that C is the hypotenuse, because doing that, you won;t get any of the options) ANYWAY....

So, you will set the equation,
\[20^2+21^2=c^2~~~~~~~~Correct?\]

Answer 11

I am going to provide the steps to do these equations, and you will love it okay? Prepare....!

Answer 12

1) take square root of each side of the equation ( 20^2+21^2=c^2 ).
2) solve (i.e. calculate) what you get inside the square root on the left side.
3) what is the square rot of the result that you get on the left side?