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4 years ago

Eight men can build a bridge in 12 days. Find the time for 6 people to build this bridge.state the assumption made.

Mathematics

2 answers:

Nimfa-mama [501]4 years ago

5 0

Answer:

6 people will take 16 days

Assumption: they all work at the same rate

8 people-------- 12 days

6 people--------> ?

8x12

= 16 days

Svetradugi [14.3K]4 years ago

5 0

Answer:

I think the assumption is that 6 men would take longer to build the same bridge

so 16 days is how long it would take 6 men

Step-by-step explanation:

I thought this because if it takes 8 men twelve days it's gonna probably take six men 16 days

12/8 = x/6

hope this helps

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2 years ago

Find the standard form of the equation of the ellipse with the given characteristics. Vertices: (4, 0), (4, 14); endpoints of th

saul85 [17]

Answer:

The standard form of the ellipse is $\frac{(x-4)^{2}}{9} + \frac{(y-7)^{2}}{49} = 1$ .

Step-by-step explanation:

The major axis of the ellipse is located in the y axis, whereas the minor axis is in the x axis. The center of the ellipse is the midpoint of the line segment between vertices, this is:

$(h, k) =\frac{1}{2}\cdot V_{1} (x,y) + \frac{1}{2}\cdot V_{2} (x,y)$ (1)

If we know that $V_{1} (x,y) = (4,0)$ and $V_{2}(x,y) = (4, 14)$ , then the coordinates of the center are, respectively:

$(h,k) = \frac{1}{2}\cdot (4, 0) + \frac{1}{2}\cdot (4,14)$

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The length of each semiaxis is, respectively:

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3 years ago

What type of number is shown below? 0.313311333111...

saveliy_v [14]

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8 0

3 years ago

An electronics company makes communication devices for military contracts. The company just completed two contracts. The navy co

adelina 88 [10]

Answer:

Workers of army contract were more productive.

Step-by-step explanation:

To determine on which contract the workers were more productive compute the work done per hour by the workers for both contracts.

Navy Contract:

Number of devices = 2,300

Number of workers = 25

Number of weeks = 2 weeks

Number of hours per week = 40

The number of hours it took 25 workers to produce 2300 devices is =

$=25\times2\times40\\=2000\ hours$

Then number of devices produced in 1 hour is = $\frac{2300}{2000}= 1.15\ devices\ per\ hour$

Army Contract:

Number of devices = 5,500

Number of workers = 35

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Then number of devices produced in 1 hour is = $\frac{5500}{4200}= 1.31\ devices\ per\ hour$

The workers for the army contract are more productive since they produce 1.31 devices per hour whereas the workers for navy contract produces 1.15 devices per hour.

4 0

3 years ago

Okay I got a question

Maslowich

What’s the question?

7 0

3 years ago