Answer:
The answer is 
Step-by-step explanation:
If we assume that people cannot taste a difference between bottled water, then the probability of identifying tap water is 0.5
Thus, P(identify tap water)=0.5
The probability that at least 8 of the 9 people identify the tap water correctly is the sum of the probabilities
- 8 of 9 people identified correctly or
- 9 of 9 people identified correctly
Since P(identify tap water)=0.5 each probabilities are the same and equal to
=
So we have 
=
12 + 6x + 6x + 6y = 12 + 12x + 6y
I think the question is wrong!
It must be
x-4
___= 5
x+2
Answer: x - 4= 5x + 10
or,-10 -4 = 5x - x
or, -14=4x
or,-14/4= x
Therefore, x = -14/4
Answer:
<h3>#1</h3>
<u>Since the circle covers 360°, each sector will be:</u>
The same angle will be made between two adjacent semicircles.
<h3>#2</h3>
The points have same latitude but different longitude.
35°W and 15° are at different sides from zero longitude.
<u>The difference is:</u>
106, 129, 152, 175, 198 count by 23
