How many seconds in a day (working out please)

There are 86,400 :D

Step-by-step explanation:

Well, we all know there are 60 seconds in a minute. We also know there are 60 minutes to an hour. So, to find the answer of how many seconds there are in a hour then we times 60 by 60. So:

60 x 60 = 3600

Which, that means there are 3,600 seconds in just a hour. Then, we need to times by 24 because there are 24 hours in one day

So,

3,600 x 24 = 86,400

By the way, good luck on your test!

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116