HELP PLS! :( whoever gets it right gets brainliest!!!

Answer: the probability that the critical path for this project will be completed within 210 days is 0.99725

Step-by-step explanation:

Given that;

Work break down is;  

 Time Estimates (days)

Activity  Precedes  Optimistic  Most Likely  Pessimistic  

Start          A,B              -                    -                   -  

A               C,D             44                50                 56  

B               D                45                60                  75  

C               E                42                45                   48  

D               F                31                 40                   49  

E               F                27                36                   39  

F              End            58                70                   82

we know that;

Expected Time = ( Optimistic Time + ( 4 × most likely time) + pessimistic time) / 6

and

Variance = [( pessimistic time - Optimistic time) / 6 ]²

so

ACTIVITY              EXPECTED TIME                                 VARIANCE

A                   (44 + (4 × 50) + 56) / 6 = 50                    ((56 - 44) / 6)² = 4

B                   (45 + (4 × 60) + 75) / 6 = 60                    ((75 - 45) / 6)² = 25

C                  (42 + (4 × 45) + 48) / 6 = 45                    ((48 - 42) / 6)² = 1

D                   (31 + (4 * 40) + 49) / 6 = 40                     ((49 - 31) / 6)² = 9

E                   (27 + (4 * 36) + 39) / 6 = 35                     ((39 - 27) / 6)² = 4

F                   (58 + (4 * 70) + 82) / 6 = 70                     ((82 - 58) / 6)² = 16

ACTIVITY     DURATION      ES        EF        LS        LF        SLACK

A                   50                      0        50         0         50            0

B                   60                      0        60        30        90           30

C                   45                     50       95        50        95            0

D                   40                     60      100        90       130          30

E                    35                    95       130        95       130           0

F                    70                    130     200       130      200           0

FORWARD PASS:

ES = MAXIMUM EF OF ALL PREDECESSOR ACTIVITIES; 0 IF NO PREDECESSORS ARE PRESENT.

EF = ES + DURATION OF THE ACTIVITY.

CRITICAL PATH = PATH WITH THE LONGEST COMBINED DURATION VALUE AND 0 SLACK.

CRITICAL PATH = ACEF

DURATION OF PROJECT = 200

Now the probability

VARIANCE OF CRITICAL PATH = SIGMA(VARIANCE OF THE CRITICAL PATH) = 25

STANDARD DEVIATION OF CRITICAL PATH = SQRT(VARIANCE OF CRITICAL PATH) = 5

EXPECTED TIME = DURATION OF THE PROJECT = CRITICAL PATH = 200

DUE TIME = 210

Z = (DUE TIME - EXPECTED TIME) / STANDARD DEVIATION OF CRITICAL PATH)

Z = (210 - 200) / 5 = 2

Now form the Normal Distribution Table;

Z = 0.99725

Therefore, the probability that the critical path for this project will be completed within 210 days is 0.99725

Answer:

Step-by-step explanation:

the formula for common difference is

d = aₙ - aₙ₋₁

So,

d = a₂-a₁ = a₃-a₂

d =7-14 & d=0-7

d = -7    & d = -7

Answer:

30

Step-by-step explanation:

6/1 divided by 1/5...(turn the second fraction into 5/1)

therefore...6/1 multiplied by 5/1

=6 multiplied by 5= 30

6 divided by 1/5 is equal to 30.

To solve 6 divided by 1/5, we can multiply the dividend (6) by the reciprocal of the divisor (1/5). The reciprocal of a fraction is obtained by flipping it, so the reciprocal of 1/5 is 5/1.

6 ÷ 1/5 = 6 × 5/1

Multiplying:

6 × 5 = 30

Therefore, 6 divided by 1/5 is equal to 30.

To know more about divided, refer here:

https://brainly.com/question/15381501

#SPJ6

Answer:

use desmos___.com it should have a grapghing calculator

Step-by-step explanation: instead of using y put f(x) when u do

Answer:

The anwser is 340.194

Step-by-step explanation:

I knew the anwser because 1 ounce is 28.3495 then I times that by 12

Answer:

ok

Step-by-step explanation:

Answer:

p(B) = 4/32 = 1/8

p(G) = 6/32 = 3/16

Answer: B

Step-by-step explanation:

Well if it's a greater than statement you can rule out C and D because those are less than symbols ( > = Less,  < = Greater) It can't be A because thats his starting amount. The x means how many months it will take for him to get more than 70 stamps

Answer:

4838 total number of voters

Step-by-step explanation:

In a whole circle there 360°, in a straight line theres 180°.

180-110=70 first to break it down to find the degrees of women.

180+70=250° for women.

250°=3360

we need to find 110° of men

25°=336

times 4

100°=1344

divide by 10

10°=134.4 round down 134

1344+134=1478

3360+1478=4838

Answer:

x=-8 y=6

Step-by-step explanation:

Add the two equations together. This cancels the x and gets us y=6

Then substitute y in more the first equation which gets us -8

Answer: y = 6 x = -8

Step-by-step explanation:

X+2Y=4

-X-Y=2

(Combine like terms)

Y= 6

(Plug in 6 for y)

X+2(6)=4

X+12=4

X= -8

Answer:

I think its figure 2

Step-by-step explanation:

Answer:4

Step-by-step explanation:

hoped this helped

Answer:

16

Step-by-step explanation:

I dont really inderstand but i would say 16 because it is closer to adding up to 43 so yea

Answer:

$13

Step-by-step explanation:

Answer: You will get $13 back

Step-by-step explanation: The cost of the shirts is $27 and since you are paying with $40 you subtract 40 to 27 and get $13.

Answer:

1/2

Step-by-step explanation:

Given

x 2 4 6 8

y 1 2 3 4

Required

Determine the constant of proportionality (k)

The relationship between x and y is:

[tex]y = kx[/tex]

When y = 2, x = 4;

So, we have:

[tex]2 = k * 4[/tex]

[tex]2 = 4k[/tex]

[tex]4k = 2[/tex]

Make k the subject

[tex]k = \frac{2}{4}[/tex]

[tex]k = \frac{1}{2}[/tex]

Hence, the constant of proportionality is 1/2

Answer:

1/2

Step-by-step explanation:

divide each one by two

Answer:

-39

49

32

Step-by-step explanation:

⁄(⁄ ⁄•⁄ω⁄•⁄ ⁄)⁄

Answer:

1. -39

2. 49

3. 32

Step-by-step explanation:

absolute values are always positive!!!

|-39| = 39 but since there is a minus sign outside the lines it is -39

|-44| = 44+5= 49

And 50 - 18 = 32 (|-18| = 18)

Answer:

makes sense

Step-by-step explanation:

Answer:

Blue and Red line

Step-by-step explanation:

Hope I helped!

Answer:

The blue and the pink lines are parallel

Step-by-step explanation:

because they have the same slope

Answer:

the measure of cord ab will be 4 unit.

because cord ab and cord cd are congruent

Answer:

x=2;y=1

(2,1)

Step-by-step explanation:

y= 6x− 11

−2x− 3(6x-11)= −7

-2x-18x+33=-7

-20x+33=-7

-20x=-40

x=2

y=6(2)-11

y=1

x=2;y=1

(2,1)

Answer:

111.72

Step-by-step explanation:

Answer:

111.72

Step-by-step explanation:

76 × (147/100)

hope it helps ☺️

Answer:

160 I'm pretty sure but I'm not sure

Answer:

1. -6

2. 0

Step-by-step explanation: