Trust me it is -16/5.
Convert a mixed number by placing the numbers to the right of the decimal over 10. Reduce the fraction. Then convert the mixed number into an improper fraction by multiplying the denominator by the whole number and adding the numerator to get the new numerator. Place this new numerator over the original denominator.
I hope this is what you need?
Answer:
1 /25.
Step-by-step explanation:
Using order of operations, we perform the multiplication first:
1/5 - 2/15 × 1/5 - 2/15
= 1/5 - 2/75 - 2/15 LCD of 5, 15 and 75 is 75 so we have:
15/75 - 2/75 - 10/75
= 13/75 - 10/75 = 3/75
= 1 /25 (answer).
Answer: There are 2.25×10³⁴ bacteria at the end of 24 hours.
Step-by-step explanation:
Since we have given that
Number of bacteria initially = 1
It triples in number every 20 minutes.
So, 
So, our equation becomes
We need to find the number of bacteria that it will contain at the end of 24 hours.
So, it becomes,
Hence, there are 2.25×10³⁴ bacteria at the end of 24 hours.
