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maksim [4K]
3 years ago
14

3. The completion of a construction job may be delayed because of a strike. The probabilities are 0.60 that there will be a stri

ke, 0.85 that the construction job will be completed on time if there is no strike, and 0.35 that the construction will be completed on time if there is a strike. What is the probability that the construction job will be completed on time
Mathematics
1 answer:
xxTIMURxx [149]3 years ago
8 0

Answer:

0.55 = 55% probability that the construction job will be completed on time

Step-by-step explanation:

We have these following probabilities:

0.6 probability there is a strike. In this case, 0.35 probability that the construction will be completed on time.

1 - 0.6 = 0.4 probability that is not a strike. In this case, 0.85 probability that the construction will be completed on time.

What is the probability that the construction job will be completed on time?

p = 0.6*0.35 + 0.4*0.85 = 0.55

0.55 = 55% probability that the construction job will be completed on time

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Plz help will be thanked and will pick out brainly
Brums [2.3K]
The answer is 32
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5 0
3 years ago
The solid surface area is equal to the solid volume. Find the value of x? The measurements of the rectangular prism is 9 inches
Fudgin [204]

Answer:

x=7.2

Step-by-step explanation:

Let x represent height of the prism.

We know that volume of rectangular is equal to product of its height, width and length.

\text{Surface area of rectangular prism}=2(wl+lh+hw), where w, h and l represents width, length and height respectively.

We have been given that the surface area of rectangular prism is equal to the volume of the prism. So we can set an equation as:

lwh=2(wl+lh+hw)

We are also told that the measurements of the rectangular prism is 9 inches long and 4 inches wide. Upon substituting these values in above equation, we will get:

9\cdot 4\cdot x=2(4\cdot  9+9\cdot x+x\cdot 4)

Let us solve for x.

36x=2(36+9x+4x)  

36x=2(36+13x)

36x=2(36+13x)

36x=72+26x

36x-26x=72+26x-26x

10x=72

x=\frac{72}{10}\\\\x=7.2

Therefore, the value of x is 7.2 inches.

6 0
3 years ago
PLZ help Asap!!!!!!!!!!!!!!!!!!!!!!!
maria [59]
I'm may not be that good at math, but I'm going to try my best to help you, because I know how it feels to be in this situation! 

The first one : 
You might be right on D. But I'm thinking B also. The question asks "Which could be a cross section of a rectangular pyramid that has been intersected by a plane perpendicular".  But a triangle is basically a flat pyramid. 

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3 0
3 years ago
At a school pep rally the ratio of students who wore red to those who wore yellow is 7 to 3 their are 300 students at the rally
Serhud [2]
Red to yellow.......7:3....added = 10
so 7/10 of the total students wore red and 3/10 of the total students wore yellow

and there are 300 total students...
7/10(300) = 2100/10 = 210 wore red
3/10(300) = 900/10 = 90 wore yellow

how many more wore red.....(210 - 90) = 120 more students wore red then yellow
5 0
3 years ago
Does 7x+3x-8 = 2(5x-4) have one solution, no solution, or infinitely many solutions?​
USPshnik [31]

Answer: only has one solution

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5 0
3 years ago
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