Although we round it to 24 hr, the actual length of a day is 23 hr, 56 min, and 4.2 sec. how many seconds are there in an actual day?

86,164.2 seconds

Step-by-step explanation:

There are 60 seconds in a minute, 60 minutes in an hour. Every hour has 3600 seconds. Multiply that by 23.

23×3600=82,800

multiply 60 by 56 for the seconds in the 56 minutes.

60×56=3360

add 82800+3360+4.2= 86,164.2

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer