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3 years ago

What is the range for this set of data?

Mathematics

2 answers:

Irina-Kira [14]3 years ago

5 0

Answer:

8 is the answer

EXPLANATION= To find range you have to arrange number in ascending to descending

7,12,15

then subtract lowest to highest

15-7 = 8

i hope you understand

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zlopas [31]3 years ago

3 0

Answer:

Step-by-step explanation:Range= subtract largest number by the smallest number

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PtichkaEL [24]

Answer:

$9 and $7

Step-by-step explanation:

The first equation:

x + 2y = 23

The second equation:

2x + 3y = 39

Convert to slope-intercept form:

x + 2y = 23 ⇒ 2y = -x + 23 ⇒ y = -1/2x + 11.5
2x + 3y = 39 ⇒ 3y = -2x + 39 ⇒ y = -2/3x + 13

The graph is attached

Intersection point is (9, 7)

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3 years ago

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azamat

Answer:

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Step-by-step explanation:

Since there are 3 cubes on one pan

and nine on the other you would need to

subtract 9-3

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3 years ago

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Aleksandr [31]

Answer:

$n=(\frac{1.960(80)}{25})^2 =246.73 \approx 247$

So the answer for this case would be n=247 rounded up to the nearest integer

Step-by-step explanation:

We know that the standard deviation is :

$\sigma = 80$ represent the deviation

The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (a)

And on this case we have that ME =25 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The critical value for 95% of confidence interval now can be founded using the normal distribution and the critical value would be $z_{\alpha/2}=1.960$ , replacing into formula (b) we got:

$n=(\frac{1.960(80)}{25})^2 =246.73 \approx 247$

So the answer for this case would be n=247 rounded up to the nearest integer

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3 years ago

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Answer:

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Step-by-step explanation:

See attachment.....

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Answer:

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Step-by-step explanation:

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