1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
DIA [1.3K]
4 years ago
7

We ask the engineers working on activity A to factor in uncertainty in activity times and to provide better estimates of the act

ivity times. The engineers tell us that activity A takes 2 weeks 25% of the time, 4 weeks 50% of the time and 6 weeks 25% of the time. How long does the project now take to complete (on average)
Mathematics
1 answer:
babymother [125]4 years ago
7 0

Answer:

On average, the project takes 4 weeks to complete.

Step-by-step explanation:

We have these following probabilities:

25% probability that the activity takes 2 weeks.

50% probability that the activity takes 4 weeks.

25% probability that the activity takes 6 weeks.

How long does the project now take to complete (on average)

We multiply each duration by it's probability.

0.25*2 + 0.5*4 + 0.25*6 = 4

On average, the project takes 4 weeks to complete.

You might be interested in
The point-slope form of the equation of the line that passes through (–5, –1) and (10, –7) is . What is the standard form of the
kvasek [131]

Answer:

Point-Slope form:  y+1=-\frac{6}{15}(x+5)\\

standard form:  2x+5y=-15


Step-by-step explanation:

The standard form is given by: Ax+By=C

The point-slope form is given by: y-y_1=m(x-x_1)


  • <em>Let's call (-5,-1) as point (x_1,y_1), and</em>

<em>point (10,-7) as point (x_2,y_2)</em>

  • <em>We also know that the slope m is given by m=\frac{y_2-y_1}{x_2-x_1}</em>

Let's find the slope:

m=\frac{-7-(-1)}{10-(-5)}=-\frac{6}{15}


1. So, point slope form can be written as:

y-(-1)=-\frac{6}{15}(x-(-5))\\y+1=-\frac{6}{15}(x+5)\\


2. Rearranging this equation and bringing all x's and y's to one side and the number to another side will give us the standard form. So:

y+1=-\frac{6}{15}x-2\\y+\frac{6}{15}x=-2-1\\y+\frac{6}{15}x=-3

<em>But A, B, and C (standard form) needs to be integers, so to get rid of the denominator , we multiply the whole equation by 15. So we have:</em>

y+\frac{6}{15}x=-3\\15y+6x=-45

<em>We can factor out a 3, so it becomes:</em>

15y+6x=-45\\5y+2x=-15

So standard form is 2x+5y=-15

8 0
4 years ago
Factor the expression completely.<br> 63x – 9
liraira [26]

Answer:

The answer is 9(7x – 1).

Step-by-step explanation:

63x – 9

3 × 3 × 7 × x – 3 × 3

9(7x – 1)

Thus, The answer is 9(7x – 1).

 

<u>-TheUnknownScientist</u><u> 72</u>

4 0
3 years ago
Evaluate 8 − 12 ÷ 2 + 3. (1 point)
Goryan [66]

Answer:

Using PEMDAS, you should get the answer of 5.

7 0
3 years ago
Read 2 more answers
Dusty won $125,000 on the Who Wants to be a Zillionaire? game show. He decides to place the money into an account that earns 6.2
sesenic [268]
Okay these are annoying, but all you need to know is the formula or expression. A=P(1+r/n)^nt so all you need to do is plug in the numbers :)

A= amount
P=$125,000
R=.0625
N=12 (annually)

So now just solve for t
3 0
3 years ago
Read 2 more answers
xander walks 389 steps from his house to the toy store .it is 149 steps to elm street.. it is 52 steps from elm street to maple
aalyn [17]

Answer:

the answer is 590 steps

Step-by-step explanation:

389+ 149+ 52= 590

6 0
3 years ago
Read 2 more answers
Other questions:
  • What two lines intersect at a right angle
    6·1 answer
  • What polynomial identity should be used to prove that 21 = 25 − 4?
    12·2 answers
  • Need help with this
    7·1 answer
  • -84(-3 - 5p)=-176 help please
    14·2 answers
  • Perms and Combos Special Cases
    12·1 answer
  • Please answer fast!! Thanks in advance :DD
    14·2 answers
  • PLEASE HELP WITH MARK BRAINLIEST!<br> What is the value of g?
    12·2 answers
  • I need help bad!!!!!!! Question: Angle ABC and angle DEF are supplementary. If
    15·1 answer
  • the equation of an ellipse is x^2/100+y^2/36=1.The ellipse is centered at the origin.Find the Vertices Of the major axis and det
    6·1 answer
  • (p-1.7)/3.9=5.2/4 answer please
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!