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xenn [34]
2 years ago
11

These will be part by part questions. cuz I dont listen well and even if I do I forget. XP

Mathematics
2 answers:
Vsevolod [243]2 years ago
8 0
It would be 163.85 because you have to move the zeros and the decimal
Alex787 [66]2 years ago
3 0

Answer:

The couch would be $163.85

Step-by-step explanation:

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A 90% confidence interval for the average salary of all CEOs in the electronics industry was constructed using the results of a
Stella [2.4K]

Answer:

b) We are 90% confident that the mean salary of all CEOs in the electronics industry falls in the interval $139,048 to $154,144.

Step-by-step explanation:

Confidence interval:

Confidence level of x%

We build from a sample.

Between a and b.

Intepretation: We are x% sure that the population mean is between a and b.

In this question:

90%

45 CEO's

Between ($139,048, $154,144).

So

We are 90% sure that the mean salary of all CEO's falls within this interval.

The correct answer is:

b) We are 90% confident that the mean salary of all CEOs in the electronics industry falls in the interval $139,048 to $154,144.

4 0
3 years ago
The equation y=x^3 + 3 is symmetric with respect to which of he following?
lianna [129]

y = x^{3} +3

Subtract 3 from both sides,

y-3=x^{3}

Let x = X and y - 3 = Y

Then,

Y = X^{3}

So, we have shifted the origin to a point (0, 3).

This is an odd function and the graph of an odd function is symmetrical about the origin.

That is, symmetrical about X = 0, Y = 0

Symmetrical about x = 0,, y - 3 = 0

Symmetrical about x = 0, y = 3.

Hence, the graph is symmetrical about the point (0, 3).

3 0
3 years ago
If the simple interest on $3000 for 8 years is $1680, then what is the interest rate?
Fiesta28 [93]
R=i/pt
R=1680/3000*8=1,680÷24,000
=0.07*100=7%
3 0
3 years ago
What is the area of the trapezoid?
tensa zangetsu [6.8K]

Answer:

24 square units

Step-by-step explanation:

For Trapezoid

a = 8

b = 4

h = 4

Area of Trapezoid

<em><u>A = a + b/2 * h</u></em>

= 8 + 4/2 * 4

= 12/2 *4

= 6 * 4

= 24

Thus, the area of the trapezoid is <em><u>24 square units</u></em>

6 0
3 years ago
B) A prize is divided between three people
dlinn [17]

Answer:

X : Z = 6 : 5

Step-by-step explanation:

X : Y      =  3 :  1

Double both sides

X : Y      =  6 : 2

     Y : Z=        2 :  5

Combined

X : Y : Z     =  6 : 2 : 5

Therefor

X : Z = 6 : 5

    

3 0
3 years ago
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