]The Pythagorean theorem states that the sum of the squares of the legs of a right triangle is equal to the square of the hypotenuse by the formula a2 + b2 = c2. If a is a rational number and b is a rational number, why could c be an irrational number?

The square of rational numbers is irrational, and sum of two irrational numbers is irrational.

The product of two rational numbers is rational, and the sum of two rational numbers is irrational.

The left side of the equation will result in a rational number, which is a perfect square.

The left side of the equation will result in a rational number, which could be a non-perfect square.

The reason for which the value of c would be an irrational number:-

D). The left side of the equation will result in a rational number, which could be a non-perfect square.

In the given situation,

Since a and b are rational numbers, the reason for c being an irrational number would be:

Let's assume

Now,

∵

Hence, c is a non-perfect square as the equations' left side produces a rational number.

Thus, option D is the correct answer.

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The left side of the equation will result in a rational number, which could be a non-perfect square.

Explanation:

According to the Pythagorean theorem, the sum of the squares of the legs of a right triangle is equal to the square of the hypotenuse.

Take

As ,

Here, 29 is not a perfect square.

So, c is irrational.

If a is a rational number and b is a rational number, c could be an irrational number as the left side of the equation will result in a rational number, which could be a non-perfect square.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.

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