Sammy flips the counter 20 times what is the probability that the 21st flip will result in landing red side up
1 answer:
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Answer:
1. 104
2. 52
3. 52
Step-by-step explanation:
I think this is right I maybe be wrong buthere is nottees I toooks in 6th
Answer:
Step-by-step explanation:
Begin by squaring both sides to get rid of the radical. Doing that gives you:
Now use the Pythagorean identity that says
and make the replacement:
. Now move everything over to one side of the equals sign and set it equal to 0 so you can factor:
and then simplify to
Factor out the common cos(x) to get
and there you have your 2 trig equations:
cos(x) = 0 and 1 - cos(x) = 0
The first one is easy enough to solve. Look on the unit circle and see where, one time around, where the cos of an angle is equal to 0. That occurs at
The second equation simplifies to
cos(x) = 1
Again, look to the unit circle and find where the cos of an angle is equal to 1. That occurs at π only.
So, in the end, your 3 solutions are
Answer:
-2
Step-by-step explanation:
rise over run