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stepan [7]
3 years ago
7

Need help with this please and thank you in advance

Mathematics
1 answer:
zhuklara [117]3 years ago
5 0
To solve this question you divide by -1 on both sides to get x by itself. This will get you the answer
x = 4
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Match the equations of the lines with their graphs.
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2. y= 2x + 3

3. y = -2x + 3

4. y = -2x - 3

Step-by-step explanation:

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The line with equation y + 2x = 0 coincides with the terminal side of an angle θ in standard position in Quadrant IV .
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Answer:

-2

Step-by-step explanation:


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What is the interquartile range of the data shown in the box plot? Please answer fast
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(First one)Low - 18
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75,575 - How do the values of the digits 5 differ in the number
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3 0
2 years ago
On a standardized test with a normal distribution the mean score was 67.2. The standard deviation was 4.6. What percent of the d
Reika [66]

Answer:

P ( -1 < Z < 1 ) = 68%

Step-by-step explanation:

Given:-

- The given parameters for standardized test scores that follows normal distribution have mean (u) and standard deviation (s.d) :

                         u = 67.2

                         s.d = 4.6

- The random variable (X) that denotes standardized test scores following normal distribution:

                         X~ N ( 67.2 , 4.6^2 )

Find:-

What percent of the data fell between 62.6 and 71.8?

Solution:-

- We will first compute the Z-value for the given points 62.6 and 71.8:

                          P ( 62.6 < X < 71.8 )

                          P ( (62.6 - 67.2) / 4.6 < Z < (71.8 - 67.2) / 4.6 )

                          P ( -1 < Z < 1 )

- Using the The Empirical Rule or 68-95-99.7%. We need to find the percent of data that lies within 1 standard about mean value:

                          P ( -1 < Z < 1 ) = 68%

                          P ( -2 < Z < 2 ) = 95%

                          P ( -3 < Z < 3 ) = 99.7%

6 0
3 years ago
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