Answer:

Step-by-step explanation:

<u>Apply exponent rule:</u>

Add the numbers:
________________________________
The second:

<span>The second equation is equal to the first multiplied
by -2, giving two coincident straight lines with infinite points in common
(solutions)</span>
Answer:
Step-by-step explanation:
2 period
Answer:


Step-by-step explanation:
Given (Omitted from the question)



Solving (a): 
This is calculated using:


<em>We used Total - 1 because it is a probability without replacement</em>
So, we have:





Solving (b) 
This is calculated as:








To find the answer you take the days of the school and divide it by days absent so it is 15 divided by 180 witch is the answer is rounded to 8%