Which equation demonstrates the multiplicative identity property?
1 answer:
Answer:
(-3+5)(1)=-3+5
Step-by-step explanation:
The multiplicative identity is 1.
The multiplicative identity property days that, if you multiply a real number by 1, that result is the same real number.
This is demonstrated in option B of the given alternatives, where we have:
The multiplication by did not change b the value.
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Answer:
The number is students
Step-by-step explanation:
From the question we are told that
The population mean is
The standard deviation is
The sample size is n = 2000
percentage of the would you expect to have a score between 250 and 305 is mathematically represented as
Generally
So
From the z table the value of
and
The percentage is
The number of students that will get this score is