With only the description, my answer is 20 students.
.003 is 1/10 of .03. To find it divide by 1/10
Answer:
After multiplication number will be 
Step-by-step explanation:
We have given numbers which has to multiply using scientific notation
That are 
We have to multiply the above number using scientific notation
We know that when two number are multiplied then there exponent power is being added
So when we multiply
there power will be added and after multiplication number will be 
Answer: 4/9
<u>Step-by-step explanation:</u>
Let x represent the denominator. Then the fraction is: (x - 5)/x
Add 1 to the numerator and denominator → (x - 5 + 1)/(x + 1) = 1/2
Cross Multiply: 1(x + 1) = 2(x - 4)
Distribute: x + 1 = 2x - 8
Subtract x from both sides: 1 = x - 8
Add 9 to both sides: 9 = x
Numerator: x - 5 → 9 - 5 = 4
Denominator: x → 9
So the fraction is: 4/9