Which description is paired with its correct expression? seven less than the quotient of two and a number squared, increased by six;
7-
+ 6
nine times the difference of a number cubed and three; 9(n2-3)
eight more than the quotient of a number squared and four, decreased by seven;
8+
4.
7
n'
twice the difference of a number cubed and eight, 2n3 - 8

1

step-by-step explanation:

it's the only multiple of both and the least

your answer would be 12

no because mercury has a density of 13.6 grams per centimeter squared while gold has 19.32 grams centimeter squared

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