Is very much ! i have no idea if it's true for all values or not.

It's only valid when the product of m and n is zero, that is when n=0 or m=0

Step-by-step explanation:

Square roots

Taking the square root of a real number m (non-negative) means to find another number x, such that

When we find square roots in algebraic expressions and we need to get rid of them, we take the 2nd power of the roots to eliminate them

We have to test if

for all values of m and n

To find an answer, we take the second power in both sides:

Expanding

Simplifying

Operating

The original expression is only valid when the product of m and n is zero, that is when n=0 or m=0

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.