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3 years ago

Please help Simplify. −6 – (−4) + (−15)

Mathematics

2 answers:

maria [59]3 years ago

7 0

Answer:

answer is 17

hope it helped

Agata [3.3K]3 years ago

3 0

Answer:

The answer for −6−(−4)−15 is -17

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The values in a dataset are 3.5, 2.5, 2.5, 3.5, and 3.0. If Xbar (sample mean) = sigma X / n, what is the mean for the sample?

RideAnS [48]

Answer:

$\bar x = 3.0$

Step-by-step explanation:

Given

$x: 3.5, 2.5, 2.5, 3.5, 3.0$

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$\bar x = \frac{\sum x}{n}$

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3 years ago

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3 years ago

DATA ANALYSIS AND STATISTICSProbabilities involving two rolls of a dieAn ordinary (falr) die is a cube with the numbers 1 throug

Zepler [3.9K]

Solution

The table below is the required sample space of the to fair die

From the above table

The sample space contain 36 outcomes

Event A: The sum is greater than 9

we will look at the table and count all the elements that are greater than 9

There are 6 elements (they are 10, 10, 10, 11, 11, 12 from the table)

The probability for event A will be

$\begin{gathered} p(A)=\frac{\text{required outcome}}{\text{total outcome}} \\ p(A)=\frac{6}{36} \\ p(A)=\frac{1}{6} \end{gathered}$

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Event B: The sum is an even number.

We will look at the table and count the number of elements that are even

There are 18 elements (notice that there are 3 even number on each of the 6 rows of the table)

The probability for event B will be

$\begin{gathered} p(B)=\frac{\text{required outcome}}{\text{total outcome}} \\ p(B)=\frac{18}{36} \\ p(B)=\frac{1}{2} \end{gathered}$

p(B) = 1/2

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1 year ago