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Lyrx [107]
2 years ago
12

When building a house, the number of days required to build varies inversely with with the number of workers. One house was buil

t in 55 days by 8 workers. How many days would it take to build a similar house with 40 workers?
Mathematics
1 answer:
masha68 [24]2 years ago
8 0

Answer:

See below

Step-by-step explanation:

We can make a the number of days and y the number of workers

Since we were told there is an inverse relationship between the days required to build the house and the number of workers required, then,

The equation would be

y = k/x

Here, y is inversely proportional to x and k is the constant proportionality

So, out required equation would be

a = k/n

Fixing the values, we'll have

55 = k/8

k = 55 × 8

k = 440

The number of days required to build a similar house with 5 workers will now be

= 440/5

= 88 days

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Answer:

k = 6

Step-by-step explanation:

im guessing you meant solve for k

0.17k - 0.43 = 0.25k + 0.05

-0.17k             -0.17k

-0.43 = 0.08k + 0.05

-0.05               -0.05

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3 years ago
1025 divided by 5 long division
True [87]

Answer:

205

Step-by-step explanation:

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Write an equation that is perpendicular to and 3x+y=3 whose y-intercept 5. Anyone please help me, no link just explain how to do
Liula [17]

Answer:

y = \frac{1}{3}x + 5

Step-by-step explanation:

By definition, two lines are perpendicular if and only if their slopes are negative reciprocals of each other:  m = - \frac{1}{m_{2} }, or equivalently, m_{1} * m_{2} = -1.

Given our linear equation  3x + y = 3  (or y = -3x + 3):

We can find the equation of the line (with a y-intercept of 5) that is perpendicular to y = -3x + 3 by determining the negative reciprocal of its slope, -3, which is \frac{1}{3}.

To test whether this is correct, we can take first slope,  m_{1} = -3,  and multiply it with the negative reciprocal slope m_{2} = \frac{1}{3} :

m_{1} * m_{2} = -1

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Therefore, we came up with the correct slope for the other line, which is  \frac{1}{3}.

Finally, the y-intercept is given by (0, 5). Therefore, the equation of the line that is perpendicular to 3x + y = 3 is:

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7 0
2 years ago
Two congruent 30-60-90 triangles are placed,as shown,so that they overlap partly and their hypotenuses coincide. If the hypotenu
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Answer: The area common to both triangle is 31.77 sq. cm.

Step-by-step explanation:

Since we have given that

30-60-90 triangles are placed.

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Since Hypotenuse = 12 cm

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So, Area common to the both triangles would be

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olga_2 [115]

Answer: i tried

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3. 2016

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Step-by-step explanation:

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