<span> (3x</span>² <span>+ 8) - (2x</span>² <span>+ 1)
= </span>3x² + 8 - 2x² - 1
= 3x² - 2x² + 8 - 1
= x² + 7
Answer:
68
Step-by-step explanation:
7.5%.
So, <span>the probability that on a given day it will work in the morning is 50% and the probability that it won't is 50%.
If it works in the morning, we're at 50%. Then, it has a 15% chance of failure.
So, it is 50 times 50%, or 7.5%.</span>
