3 years ago

Write an inequality that represents the statement "x is greater than -3 and less than or equal to 4."

Mathematics

1 answer:

Naddika [18.5K]3 years ago

8 0

Answer:

-3<x<=4

Step-by-step explanation:

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Determine the mean of the following data. Choose the correct option.<br> 7, 8, 9, 2, 4, 5, 12, 9

Brut [27]

Answer:

Step-by-step explanation:

mean means average

there are 8 numbers

add them all up

7+8+9+2+4+5+12+9=56

divide 56 by 8 = 7

8 0

3 years ago

A sociologist recently conducted a survey of senior citizens who have net worths too high to qualify for Medicaid but have no pr

hjlf

Answer:

a) $s= 9.74$

D. 9.74

b) $Median= 74$

B. 74

Step-by-step explanation:

Part a

We have the following dataset given:

69 74 75 62 70 93 64 69 61 88 67 77 87 90 66 91 77 63 82 82 71 74 76 65 83

We can begin calculating the sample mean with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

And replacing we got:

$\bar X = 75.04$

Now we can calculate the sample deviation with the following formula:

$s =\sqrt{\frac{\sum_{i=1}^n (X_i-\bar X)^2}{n-1}}$

And after replace we got:

$s= 9.74$

Part b

For this case we need to sort the value on increasing way:

[1] 61 62 63 64 65 66 67 69 69 70 71 74 74 75 76 77 77 82 82 83 87 88 90 91 93

And the median would be the value in the position 13 and we got:

$Median= 74$

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3 years ago

What is the directrix of the parabola with the following equation?<br> (y - 1)2 = -4(x - 1)

Softa [21]

Answer:

x = 2

Step-by-step explanation:

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3 years ago

Consider the equation y=97x+8000, what is the y-intercept?

Natali [406]

Answer:

8000

Step-by-step explanation

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3 years ago

What is 2+2 im losing my mind today

irina1246 [14]

4 the answer is four 1234

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3 years ago

Read 2 more answers