A. 8.005 • 10² = 800.5 (Incorrect)
B. 8.500 • 10⁻³ = 0.0085 (Incorrect)
C. 8.005 • 10⁻⁴ = 0.000801 (Incorrect)
D. 8.005 • 10⁻³ = 0.008005 (Correct)
Answer: D. 8.005 • 10⁻³
Answer: If he has 3 mystery books, and those are 1/8 of his whole collection, he has 24 books.
Step-by-step explanation:
3 = 1/8 × x
multiply both sides by the reciprocal of 1/8 which is 8/1 ("flipped fraction")
8 × 3 = 8/1(1/8) x <em>When you multiply a fraction by its reciprocal, it produces 1, so it "cancels" in the multiplication</em>
<em>24 = x </em>
<em>This may seem complicated, but understanding the process will help you solve more complicated questions like this in the future, I hope.</em>
<em />
1/3 ÷1/4 = 1/3 × 1/4 = 1/12
Answer:

Step-by-step explanation:
step 1
<u>Find the volume of the tank</u>
we know that
The volume of a cylinder (water tank) is equal to

in this problem we have
-----> the radius is half the diameter
substitute

step 2
Find the cost
