Answer:
the battery rate is 6.5
Step-by-step explanation:
Answer:
.3375
Explanation:
Total people who were given drug: 800
Total people who showed improvement: 270
Probability:

<em>insert values</em>

<em>simplify</em>
<em />
<em>in decimals</em>

Answer: I believe the answer is (2) 49
Explanation: The given ratio is 5:245
When simplified(245/5), it gives you 1:49!