If aed and ced are both right triangles, what triangle congruence could be used to prove that the two triangles are congruent?

Step-by-step explanation:

We can use the postulate Leg-Acute Angle theorem to demonstrate the congruence.

This postulate states "if a leg and an acute angle of one triangle are congruent to the corresponding parts of another right triangle, then those two right triangles are congruent".

So, in this case, we have

, by reflexive property, that is, a segment is congruent to itself.

, by Given.

So, with these two given congruence we demonstrate that , by Leg-Acute Angle Postulate.

Therefore, the answer is Leg-Acute Angle Postulate.

the answer is a.

135 and 80

step-by-step explanation:

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours