Answer:
The 3rd one 50 - 12p = 26
Step-by-step explanation:
Answer: x = 4, y = 3
<u>Step-by-step explanation:</u>
and 
Using substitution method we get:

If it is 50 pages in an hour, half an hour would be 25 pages, and if it is 40 pages in an hour it would be 20 pages in half an hour, the answer is 5 pages more in half hour
<span>A.This could easily happen with a fair coin after only 5 flips</span>
Answer:
y= -3/2-2
Step-by-step explanation: