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Alla [95]
3 years ago
7

How to get the number 4 with the numbers 2,3,6,8 using all of them and you only use it once.

Mathematics
1 answer:
sergey [27]3 years ago
5 0

Answer:

2 x 3 + 6 - 8

Step-by-step explanation:

2 x 3 = 6

6 + 6 = 12

12 - 8 = 4

:)

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Suppose that a random sample of 10 adults has a mean score of 62 on a standardized personality test, with a standard deviation o
aniked [119]

Answer:

The 90% confidence interval for the mean score of all takers of this test is between 59.92 and 64.08. The lower end is 59.92, and the upper end is 64.08.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.9}{2} = 0.05

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.05 = 0.95, so z = 1.645

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.645*\frac{4}{\sqrt{10}} = 2.08

The lower end of the interval is the sample mean subtracted by M. So it is 62 - 2.08 = 59.92

The upper end of the interval is the sample mean added to M. So it is 62 + 2.08 = 64.08.

The 90% confidence interval for the mean score of all takers of this test is between 59.92 and 64.08. The lower end is 59.92, and the upper end is 64.08.

5 0
2 years ago
The function B is defined by the equation B(x)=10x+25
kenny6666 [7]

10(6) + 25 = 60 + 25 = 85

10(2.75) + 25 = 27.5 + 25 = 52.5

10(1.482) + 25 = 14.82 + 25 = 39.82

93 = 10x + 25 || 68 = 10x || x = 6.8

42.1 = 10x + 25 || 17.1 = 10x || x = 1.71

116.25 = 10x + 25 || 91.25 = 10x || x = 9.125

4 0
2 years ago
you have $11.35 to buy treats for yourself and a friend. You buy 3 packs of marshmallow chicks for $1.45 each. Then u buy 2 cupc
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Bunny & egg or egg & jelly beans
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2 years ago
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Graph the image of the given triangle under a dilation with a scale factor of and center of dilation (0, 0)
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Step-by-step explanation:

7 0
3 years ago
A season has96 home games. If you purchase a season ticket in the bleacher section, what is the cost per game,in dollars, for th
sattari [20]

Answer:

$8.4375 per game

Step-by-step explanation:

From. The picture attached :

Season long Ticket cost for the bleachers sitting area is : $810

Given that the number of home games in a season is 96

The cost per unit of game could be calculated as :

Cost of season long Ticket / number of home games

= $810 / 96

= $8.4375

$8.4375 per game

5 0
3 years ago
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