Answer:
(2 a - 5) (2 a + 5)
Step-by-step explanation:
Factor the following:
4 a^2 - 25
4 a^2 - 25 = (2 a)^2 - 5^2:
(2 a)^2 - 5^2
Factor the difference of two squares. (2 a)^2 - 5^2 = (2 a - 5) (2 a + 5):
Answer: (2 a - 5) (2 a + 5)
The volume of the shape
We have a cylinder that is cut into two. Its external radius is 5ft, while its internal radius is 4ft.
External radius = internal radius + thickness

Internal radius = 4ft (given)
Recall that the volume(V) of a full cylinder is:

Since the cylinder is cut into two, the volume(V) is:

height (h) = 12ft (given)
The volume of the shape:
Answer:
54.9
Step-by-step explanation:
You always round up if its 0.5 or anything .5
54.58 broken down:
The 5 is the Tens place
The 4 is the Ones place
The 8 is the Tenth place (what the question is asking for)
The 5 is the Hundredths place.
:) Hope this helps! Please mark brainliest! :)
You would simplify this expression by adding the coefficients 14 and -5.
Answer:
b. lol.
Step-by-step explanation:
yeah I'm almost positive