Answer:
First of all, he have to find out what 0.5% of the students is.
Second of all, find out what 0.5 of 100 is. 100 divided by 0.5 is 200.
Third of all, divide 200 from 639. This equals 3.195
Since it is asking about how many, I would go with about 3. After all, you can't have have half of a person, so the decimals shouldn't be added.
Step-by-step explanation:
as a fraction the answer is
x=(10/9)
as a mixed number
x=1(1/9)
as a decimal
x=1.1
I wasn't sure which form you were looking for I I gave you them all
Answer:

<h3>
Step-by-step explanation:</h3>
<u>Given:</u>
To find the area of the rug, we need to use the formula "πr² or π(D/2)²"
<u>Where:</u>
Since we do not have the radius, we need to substitute the diameter in the formula "π(D/2)²" to determine the area of the rug.
⇒ 
⇒ 
⇒ 
⇒ 
⇒ 
Substituting "22/7" as π:
⇒ 
⇒ 
When finding the area of ANY shape, do not forget to include the units.
⇒ 
The answer is A obtuse isosceles
I know for a fact that 1, 2 and 4 are correct. I'm almost positive 3 and 5 are right too
1. B
2.D
3.D
4.B
5.D