Trisha invited 12 friends to her party. Eight of her friends are girls. What is 8 12 in simplest form?
2 answers:
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Complete Question
The complete question is shown on the uploaded image
Answer:
1 ) The correct option B
2) The correct option is C
3) The correct option is C
4) The correct option is C
Step-by-step explanation:
From the question we are told that
The proportion that own a cell phone is
The sample size is n = 15
Generally the appropriate distribution for X is mathematically represented as
So
Generally the number students that own a cell phone in a simple random sample of 15 students is mathematically represented as
Generally the standard deviation of the number of students who own a cell phone in a simple random sample of 15 students is mathematically represented as
Where q is mathematically evaluated as
Generally the probability that all students in a simple random sample of 15 students own a cell phone is mathematically represented as
From the combination calculator is
Answer:
x ∈ [-2, 7]
Step-by-step explanation:
The given equation ...
x^2 -5x -4 ≤ 10
can be rewritten as ...
x^2 -5x -14 ≤ 0
and factored as ...
(x +2)(x -7) ≤ 0
Clearly, the "or equal to" condition will be met when x=-2 and x=7. For values of x between these numbers, one factor is negative and the other is positive. Hence the product will be negative. So, numbers in that interval are the solution set.
x ∈ [-2, 7]
