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
= 
Answer:
a = 3, b = 3, c = 5 and d = 2.
Step-by-step explanation:
The prime factorization of 600 is 2^3 * 3 * 5^2
Answer:
x = 10
Step-by-step explanation:
Breaking down the equation

Simplification

Answer:
79%
Step-by-step explanation:
He has 100% to start off. If he puts 21% into savings you subtract that from the starting amount. 100 - 21 = 79. Therefore the answer is 79%.
Answer:
122 is the right answer not 130
Step-by-step explanation:
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