Name the property of equality or congruence that justifies going from the first statement to the second statement.
st=qr
qr=st

a) reflexive property of congruence
b) symmetric property of congruence
c) transitive property of congruence
d) substitution property of congruence

b) symmetric property of congruence

Step-by-step explanation:

Congruence :

Two figures are said to be congruent if they overlap each other .

Reflexive property of congruence :

Reflexive property of congruence states that the figure is congruent to itself .

Symmetric property of congruence :

Symmetric property of congruence states that if one figure is congruent to the other figure then the other figure is also congruent to the given figure .

Transitive property of congruence :

Transitive property of congruence states that if figure A is congruent to B and figure B is congruent to C then figure A is congruent to C .

Substitution property of congruence :

If two figures are congruent such that some property applies to both the figures then we can replace one figure with the other .

Given :

ST = QR and QR = ST

So, Symmetric property of congruence justifies going from the first statement to the second statement .

+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