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Answer:

24.5 points

8 points

Step-by-step explanation:

khan academy

The mean is 1.95 and the standard deviation is 2.41 for the given distribution.

A standard deviation (σ) is a measure of the distribution of the data in reference to the mean.

The given data as :

Correct question (x)  Probability                

        0                           0.05  

        1                            0.20

        2                           0.50

        3                           0.25  

In this scenario, we must calculate the mean, which is the product of the correct question and the probability. The mean will then be subtracted from the correct question. multiply the difference between the correct question and the mean by probability. This indicates the pay variance. off's The standard deviation of the distribution is given by taking the square root of the variance of the correct question.

Mean = 0 × 0.05  + 1 × 0.20 + 2 × 0.50 + 3 × 0.25

Mean  = 1.95

Variance = (0 - 1.95)² + (1 - 1.95)² + (2 - 1.95)² + (3 - 1.95)²

Variance = 3.8025 + 0.9025 + 0.0025 + 1.1025

Variance = 5.81

Standard deviation = √(Variance)

Standard deviation = √(5.81)

Standard deviation = 2.41

Thus, the mean is 1.95 and the standard deviation is 2.41 for the given distribution.

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Answer:

The answer is c

Step-by-step explanation:

Well, since the Circle is 8cm you can divide the circle by two to get 4

Answer:

Question 11 - B

Question 12 - C

Step-by-step explanation:

11). 4 chairs per table --> B

12). The 24 pack is a better buy (C).

Answer:

1).  -12

2).  -6

Hope this helps<3

Answer:

10y

Step-by-step explanation:

Answer:

its negative 8

Step-by-step explanation:

you can see it there

Step-by-step explanation:

it will take 21/20hours

Answer:

A

Step-by-step explanation:

All triangles angles add up to 180°

Answer:

     m=-5/13

Explanation

Answer:

fraction-3/10

decimal-.3

Answer:

Step-by-step explanation:

There are a few ways you could look at this, but this is the way that I prefer:

A percent is essentially already a fraction out of 100. 100% = 1. Therefore, 30% = [tex]\frac{30}{100}[/tex].

To simplify this, divide the top and the bottom by 10. This equals [tex]\frac{3}{10}[/tex]. Because 3 is a prime number and 10 is not divisible by 3, this is completely simplified.

To find the percent of any fraction, the easiest way is to simply divide the top by the bottom.

3/10 = 0.3

This is your final answer, as there is no number in the hundredth place or beyond to concern yourself with.

Answer:

√96 = 4√6

Step-by-step explanation:

Factor the radicand. Take the square root of the factors.

The expression that should be equivalent to [tex]\sqrt{96}[/tex] is considered to be the  [tex]= 4\sqrt 6[/tex]. The calculation is given below,

Since the expression is [tex]\sqrt{96}[/tex]

So, we can solve by breaking it

[tex]= \sqrt{2^5\times 3} \\\\= \sqrt{2^4 \times 2 \times 3} \\\\= \sqrt 2^4 \times \sqrt 6\\\\= 4\sqrt 6[/tex]

Hence, we can conclude that The expression that should be equivalent to [tex]\sqrt{96}[/tex] is considered to be the  [tex]= 4\sqrt 6[/tex].

Learn more about an expression here: https://brainly.com/question/1673286

Answer:

9) y = -x

10) y = -3/2x + 12

11) y = 3/4x - 5

12) y = -2/3x

Answer:

36

Step-by-step explanation:

80 * .45 = 36

Answer:There are 36 pop songs on your playlist

Step-by-step explanation:

lxw  so 3/4 x 4/5 then get ur answer

So ummm. I kind of got this wrong, and I had to delete my answer, I swear, I am SOOOO sorry. If there is a way I can give your points back I will do so.

So um yeah, just ignore this.

Answer:

cube................

Answer:

A)

Step-by-step explanations:

Answer: 6 cm

Step-by-step explanation:

The surface area of the given shape is 80 cm².

From the given figure, the dimensions of large cuboid is length= 5 cm, width= 3 cm and height= 2 cm.

The surface area of a cuboid is the total space occupied by it. A cuboid is a six-faced three-dimensional shape in which each face is in the shape of a rectangle.

Formula to find the total surface area of a cuboid is 2(lw+wh+lh)

Surface area of a large cuboid

= 2(5×3+3×2+5×2)

= 2(15+6+10)

= 2×31

= 62 cm²

The dimensions of smaller cuboid is length= 1 cm, width= 1 cm and height= 4 cm

Surface area of a smaller cuboid

= 2(1×1+1×4+1×4)

= 2(1+4+4)

= 2×9

= 18 cm²

Total surface area = 62+18

= 80 cm²

Therefore, the surface area of the given shape is 80 cm².

Learn more about the surface area of a cuboid here:

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Answer:

0,0

2,-1

-2,4

Step-by-step explanation:

Answer:

Step-by-step explanation:

[tex]Consider \ the \ following \ series[/tex]

[tex]\lim_{n \to \infty} \sum \limits ^n_{i=1} x_i \ In ( 1+ x_i^2) \Delta x , [2,7][/tex]

[tex]Let's \ recall \ the \ explanation \ of[/tex] d[tex]efinite[/tex] [tex]\ integral \ in \ terms \ of \ Riemann \ sum[/tex]

[tex]\int^b_a \ f(x) \ dx = \lim_{n \to \infty} \sum \limits ^n_{i=1} \ f(x_i) \Delta x , \ where \ \Delta x = \dfrac{b-a}{n}[/tex]

[tex]By \ efinition, \ the \ limit \ is \ then \ expressed \ as \ integral[/tex]

[tex]\lim_{n \to \infty} \sum ^a_{i=1} \ x_i \ In (1+x_i^2) \Delta x = \int^7_2 xIn (1+x^2) \ dx[/tex]

Answer:

100 Sq in.

Step-by-step explanation:

Answer:2,3,4,5,6

Step-by-step explanation:

Answer:

0.20

0.46

0.82

1.28

1.84

Step-by-step explanation:

Answer: -24

Step-by-step explanation:

Substitute k and m with -3 and -9 then solve.

Answer: VTU and HGF

Step-by-step explanation:

Answer: [tex]y= 2300(1.072)^t[/tex]

Step-by-step explanation:

The exponential growth equation : [tex]y=A(1+r)^t[/tex] , where A=initial value, r= rate of growth , t= time.

Given: A = 2300,  r= 7.2% = 0.072  

Let t be the number of hours since the start of the study. Let y be the number of bacteria cells.

then, the exponential function showing the relationship between y and t will be:

[tex]y= 2300(1+0.072)^t\\\\\Rightarrow\ y= 2300(1.072)^t[/tex]

Answer:

waiting for the wishing well, put they hands put they hands to the wishing well still no ns but oh well they pain and they wishes in the wishing well.

Step-by-step explanation:

Answer:

Step-by-step explanation:

y = [tex]\frac{3}{2}x[/tex]

2) [tex]y=\frac{3}{2}*64\\[/tex]

y = 3 * 32 = 96

[tex]3) x = \frac{2}{3}y\\\\x =\frac{2}{3}*39=2*13=26[/tex]

[tex]4)y=\frac{3}{2}x\\\\y=\frac{3}{2}*1=\frac{3}{2}[/tex]