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anygoal [31]
2 years ago
14

Help

" align="absmiddle" class="latex-formula">
what the simplified answer
Mathematics
1 answer:
DanielleElmas [232]2 years ago
8 0
Answer -
6x - 3
Solution:
8x - (3 + 2x) \\ open \: the \: bracket \\8x( -  \times 3)( -  \times  + 2x) \\8x  - 3 - 2x \\ 8x - 2x - 3 \\ 6x - 3
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Explain the difference between observed frequency and expected frequency as it relates to Chi-Square test.
emmasim [6.3K]

Answer:

Step-by-step explanation:

A Chi-square test is used to test the test of independence between rows and columns, contingency tables. It is a test related to frequencies. The observed frequency is a given statistical frequency known as the actual frequency,  the expected frequency is known as the theoretical frequency is derived from the study by using the sum total of the row and total in the column divided by their corresponding sample size.

5 0
3 years ago
I need help with 10,11,12
pshichka [43]
10. 50 is roughly around ~16% of 300. (16% is 50.1)

11. 35% of 150 would be 52.5

12. 80 is 200% of 40

3 0
3 years ago
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Which graphs show functions with direct variation? select three options.
Nikolay [14]

Answer:

the daily graphs

Step-by-step explanation:

the news paper

4 0
2 years ago
The given function k is a composition of two functions m and n so that k(x) = (m ∘ n)(x). k (x) = StartFraction 2 Over RootIndex
kotykmax [81]

Answer:

\frac{2}{\sqrt[4]{x} }

Step-by-step explanation:

6 0
3 years ago
PQ is rotated 180 degrees clockwise about P. What are the coordinates of P' and Q'?
Salsk061 [2.6K]

The co ordinates of P' is (-7,-2) and Q' is (-16, -8)

<u><em>Explanation</em></u>

PQ is rotated 180 degrees clockwise about P. It means <u>P and P' are the same points</u>.

According to the graph, the coordinates of P is (-7, -2) and  Q is (2, 4)

When PQ is rotated 180 degrees clockwise about P, then <u>P or P' will be the mid-point of Q and Q' </u>

Suppose, the co ordinate of Q' is (x, y)

Now according to the mid-point formula, the coordinate of P or P' will be: (\frac{x+2}{2},\frac{y+4}{2}) , which is actually at (-7, -2)

Thus.....

\frac{x+2}{2}=-7\\ \\ x+2=-14\\ \\ x= -16\\ \\ and\\ \\ \frac{y+4}{2}= -2\\ \\ y+4= -4\\ \\ y= -8

So, the co ordinates of P' is (-7,-2) and Q' is (-16, -8)

6 0
2 years ago
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