Anumber is divisible by 6 if and only if it is divisible by 3.
a it is false because both parts of the biconditional are false.
b it is true because at least one part of the biconditional is true.
c it is true because both parts of the biconditional are true.
d it is false because at least one part of the biconditional is false

really really sorry if i'm

-12 -5(x + 4) = 3x

-12 - 5x - 20 = 3x

-12 - 20 - 5x = 3x

-32 - 5x = 3x

    + 5x   + 5x

-32 = 8x

8         8

- 4= x

maya’s expression will generate the wrong sum because she violated the commutative property.

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