Solve the following equation or inequality for the unknown variable. Round answer to two decimal places if necessary. (3x)2 - 10 = 56
4
x =

x = 2.7

Step-by-step explanation:

The given equation is :

We need to solve it for x.

It can be rewrite as follows:

Adding 10 to both sides,

So, the value of x is equal to 2.7.

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