<span>As you have two fractions, you can cross multiply them. This gives: x/a = y/b to ay = xb. Then divide both sides by b to isolate x: ay/b = x.</span>
Answer:

The probability is not low
Step-by-step explanation:
Given


Required

First, we calculate the probability of single negative using the complement rule



is calculated using:
---- i.e. complement rule
So, we have:



<em>Probabilities less than 0.05 are considered low.</em>
<em>So, we can consider that the probability is not low because 0.2775 > 0.05</em>
The answer is 20.
First you would multiple the negative with the negative 12, then you just add/subtract.
<span>297, 252, 207, 162, 117 , 72 , 27
hope it helps</span>