What is the slope of the line shown below?

-4

Step-by-step explanation:

If you are given a problem like this with two points, the easiest way to find the slope is using the equation with points and .

In this problem, by looking at the graph, you can identify the points (0, 10) and (5, -10)

Let's label these numbers:

Now, plug these numbers into the formula above. That gives you .

-10 - 10 = -20 and 5 - 0 = 5, which gives you a fraction of , which can be simplified down to -4.

the answer is 21%.

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