2. The length of time � necessary to complete a key operation in the construction of houses has an exponential distribution with mean 10 hours a. How long do you expect the key operation to take? b. What is the probability the key operation will take less than 24 hours? c. What is the probability the key operation will take at least 5 hours? d. What is the probability the key operation will take at least an additional 5 hours given the construction works have already worked for 10 hours? e. What do you notice about your answers to part c and part d? What is this property called?

Answer:

А(0/6;-2) и B(-5.6;17)

Step-by-step explanation:

(-2;4) поставь координаты место (x;y)

Например: 4=-3*(-2)+b, найдите b, а затем нарисуйте график.

Я отправила вам фото. Там всё написано и график тоже

Answer:

0.27

Step-by-step explanation:

The standard deviation of a uniform distribution is:

σ² = (b − a)² / 12

σ² = (32.51 − 31.58)² / 12

σ² = 0.0721

σ = 0.268

Rounded to the hundredths place, the standard deviation is 0.27.

To solve this question, we use concepts of the uniform probability distribution.

Using this, we get that the standard deviation in volumes of quart-size Hellmann's mayonnaise jars is of 0.2685 fluid ounces.

Uniform probability distribution:

An uniform distribution has two bounds, a and b.

The standard deviation is:

[tex]S = \sqrt{\frac{(b-a)^2}{12}}[/tex]

The actual volumes of quart-size jars of Hellmann's mayonnaise are uniformly distributed from 31.58 to 32.51 fluid ounces.

This means that [tex]a = 31.58, b = 32.51[/tex]

Find the standard deviation in volumes of quart-size Hellmann's mayonnaise jars (in fluid ounces).

[tex]S = \sqrt{\frac{(32.51 - 31.58)^2}{12}} = 0.2685[/tex]

Thus, the standard deviation is of 0.2685 fluid ounces.

A similar example is given at https://brainly.com/question/15855314

Answer: 1.6748031in

Step-by-step explanation:

Answer:

Step-by-step explanation:

-8.5

-|4.5|

-3.5

-1.5

|-3.5|

4.5

|5.5|

Answer:

34 quarters.

6 nickles.

Step-by-step explanation:

Answer:

3: 38

4: 36

Step-by-step explanation:

Answer:

Its M=7

Step-by-step explanation:

Answer:

savings-4%

insurance-7%

taxes-22%

9514 1404 393

Answer:

  linear equation in the point-slope form

Step-by-step explanation:

There are many forms an equation for a line may take. Some of the ones commonly seen are ...

  ax +by = c . . . . standard form (a,b,c mutually prime integers; a>0)

  y = mx + b . . . . slope-intercept form (m=slope; b=y-intercept)

  y -k = m(x -h) . . . . point-slope form (m=slope, (h, k)=point)

__

and some additional ones I commonly use are ...

  x/(x-intercept) +y/(y-intercept) = 1

  y = m(x -h) +k . . . . variation of point-slope form (m=slope; (h, k)=point)

  y = (y2 -y1)/(x2 -x1)(x -x1) +y1 . . . . two-point form (points (x1, y1) and (x2, y2))

  bx -ay = bh-ak . . . . line perpendicular to standard form line ax +by = c through point (h, k)

__

If you compare these forms to the equation you're given, you see it matches the "point-slope form" for point (4, 2) and slope 7.

Answer:25 + 24 + 49 :)

Step-by-step explanation:

Hope this helped :)

Answer:

C. 35

Step-by-step explanation:

I just went through all the numbers, multiplied them by 2, because you start with x which is 50, and the goal is to get to 120 with 50 and a number multiplied by two, so I tried 35 which would be 70 when multiplied by two, then added 50, which would make 120.

Answer:

It should be 100 days sample so that the margin of error will be 39.2 tons or less

Step-by-step explanation:

We are given that A coal company wants to determine a 95% confidence interval estimate for the average daily tonnage of coal that it mines.

[tex]\alpha = 0.05[/tex]

To Find two tailed critical value using Z table

[tex]Z_{\frac{\alpha}{2}}=Z_{\frac{0.05}{2}}=\pm 1.96[/tex]

Margin of error = ME = 39.2

[tex]\sigma = 200[/tex]

Formula : [tex]n = (\frac{Z_{\frac{\alpha}{2}} \times \sigma}{ME})^2[/tex]

[tex]n = (\frac{1.96 \times 200}{39.2})^2[/tex]

n=100

Hence it should be 100 days sample so that the margin of error will be 39.2 tons or less

Answer:

Abby's mother spent $9.75 for the classroom not including tax.

Step-by-step explanation:

Know:

5 bags for 1 dollar

10 candy bars for 50 cents

3 whistles for 75 cents

5×6=30

10×3=30

3×10=30

Answer: C) between 6 and 7 pounds

Step-by-step explanation: 50 divided by 8 = 6.25

Answer:

Step-by-step explanation:

A) Boys : Girls

   132 : 89

   66 : 89

   33 : 89

B) Boys to Girls

   132 to 89

   66 to 89

   33 to 89

C) Boys : Adults

   132 : 14

   66 : 7

   33 : 7

D) Boys to Adults

   132

   -----    

   14

xxxxxxxx

   66

   -----

    7

xxxxxxxx

   33

  ------

    7

I'm not sure but here you go

Answer:

50

Step-by-step explanation:

12books=24%of all books

12×2=24

100-24= 76

76÷2=38

38+12=50

Answer:

The 3

Step-by-step explanation:

Answer:

1.Commutative

2.Associative

3.Distributive

4.Double Negative

Step-by-step explanation:

Hope this helps! :)

Answer:

Answer:

its b

Step-by-step explanation:

The fraction that is equal to 6 can be some of the following:

[tex]\mathbf{\dfrac{6}{1} \ ; \dfrac{12}{2} \ ; \dfrac{18}{3} \ ; \ \dfrac{24}{4}\ ; \ \dfrac{36}{6} }[/tex]

A fraction usually comprises a numerator and a denominator separated by a division line.

The factors of a given number are the numbers that can be divided in such a given number without a remainder.

From the given example, we are to determine the factors of 6, so we will think about a number that can be divided by 6 without leaving any remainder.

These numbers are:

From these numbers, we can pick two factors that when divided together, we get 6 as our result and without any remainder.

i.e.

The fraction that is equal to 6 are:

[tex]\mathbf{\dfrac{6}{1} \ ; \dfrac{12}{2} \ ; \dfrac{18}{3} \ ; \ \dfrac{24}{4}\ ; \ \dfrac{36}{6} }[/tex]

Learn  more about fractions here:

https://brainly.com/question/6201432?referrer=searchResults

The answer is A. -6.8

a = 66 points (first test)

b = 98 (second test)

Hi there !

a = first test

b = second test

a + b = 164

b = a + 32

replace b

a + (a + 32) = 164

2a = 164 - 32

2a = 132

a = 132 ; 2

a = 66 points (first test)

b = 66 + 32

b = 98 (second test)

Good luck !

Answer:

Hi there

Your answer is

10 Bunches

Step-by-step explanation:

4 bunches= 8$

/8 for how many bunches per 1$

.5bunches= 1$

*20

10bunches=20$

a. 132:89

b.132 to 89

c.132:14

b. 132 to 14

Answer:

What sumbarine and what boat?

Step-by-step explanation:

true, when you convert to a decimal, you add a zero in the variable