Determine the truth value of the conjecture. if it is false, provide a counterexample. conjecture: all squares are rectangles. a. true b. false; a square with side length 8 is not a rectangle c. false; no counterexample needed d. false; no squares are rectangles

A. true

Step-by-step explanation:

Conjecture: All squares are rectangles. This is true.

Every square is a rectangle because it is a quadrilateral with all four right angles.

But every rectangle is not a square, because to be a square its sides must have the same length.

Hence, the answer is true.

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x