**Answer:**

The given statement is true.

**Step-by-step explanation:**

**A corollary is a statement that can be easily proved using a theorem. This statement is true.**

A corollary is usually defined as some idea formed from something that is already existing or already been proven.

This is the reason it is not difficult to prove as it has already been proven.

**Answer:**

81

**Step-by-step explanation:**

You r multiplying by three's

We can solve this by setting up a couple of equations.

Let's allow x to represent the number of paperbacks Tim owns, and allow y to represent the number of hardcover books he owns.

Using the information in the question, we can write the equations:

1)

2)

Let's rearrange equation 1 so that it is in standard form:

And then let's multiply equation 2 by 4 so that we can cancel out y when we solve the system of equations:

Then we can add the two equations and solve for x:

1)

+ 2)

------------------------------------

So now we now the number of paperback books Tim has is 357. Let's plug this into one of the original equations to solve for the number of hardcover books (y):

And now we know that

**Tim owns 90 hardcover books**.

**Answer:**

12+5m=C

**Step-by-step explanation:**

This is the equation because 12 represents the original price whilst 5m represents the price of a video for example if you rent 2 videos 12+5(2)=22

1,357,045 rounded to the nearest hundred is 1,357,000.

Mark me brainliest please (: