The area of the pentagon is 19 square units
The coordinates of the pentagon are given as:





The area of the pentagon is then calculated using:

So, we have:

Simplify the expressions in both brackets


Remove absolute bracket


Hence, the area of the pentagon is 19 square units
Read more about areas at:
brainly.com/question/1423568
The answer is b because youre multiplying 3 and 4 but the 4 stays in the same spot!
The mean of the answer is 20.5 because you add all of the number together and divide by 6 because there's 6 numbers.
I'm sorry, but I don't know how to do the standard deviation...
Hope this helped!
Answer:
Step-by-step explanation:
This is already factored for us, which is really nice, so now all we need to do is apply the Zero Product Property to the sets of parenthesis and solve for x, which will give us the 2 times that the object is on the ground.
x + 1 = 0 so
x = -1
x - 9 = 0 so
x = 9
We all know that time cannot ever be negative, so the time that the object is on the ground is 9 seconds after it's launched (which was from an initial height of 45 meters).