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pochemuha
3 years ago
11

if it takes four men to dig a land in 6 days.how many days will it take 6 men to build that same land.​

Mathematics
2 answers:
lesantik [10]3 years ago
7 0

Answer:

\boxed{4 days}

Step-by-step explanation:

M1 = 4

D1 = 6

M2 = 6

D2 = x (we've to find this)

<u><em>Since,  it is an inverse proportion (more man takes less days for the work to complete and vice versa), so we'll write it in the form of</em></u>

M1 : M2 = D2 : D1

4 : 6 = x : 6

<u>Product of Means = Product of Extremes</u>

=> 6x = 4*6

=> 6x = 24

Dividing both sides by 6

=> x = 4 days

Slav-nsk [51]3 years ago
6 0

Answer:

<h2>4 days</h2>

Solution,

____________________________

Men ------------------------------ Days

<h3>4 ------------------------> 6</h3><h3>6 ------------------------> X (suppose)</h3>

_____________________________

In case of indirect proportion,

4/6= 6/X

or, 6*X= 6*4 ( cross multiplication)

or, 6x= 24

or, 6x/6= 24/6 ( dividing both sides by 6)

<h3> x= 4 days</h3>

Hope this helps...

Good luck on your assignment..

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Pls someone help these answers are on chegg so if u have a subscription pls answer these ill make u brainliest ! Below is a tabl
aivan3 [116]

The table is not clear, so i have attached it.

Answer:

z statistic is -2.26

This is less than our alpha level,therefore we reject the null hypothesis and conclude that there is a significant difference in the proportion of homeowners between first generation and second generation Hispanic Americans

Step-by-step explanation:

From the attached table, we can see that;

first-generation hispanic americans; (N = 899 and percentage = 43%

second-generation hispanic americans; N = 351 and percentage = 50%

first-generation asian americans; (N = 2,684 and percentage = 58%

second-generation asian americans; N = 566 and percentage = 51%

Z-score formula in this case is;

z = (p1^ - p2^)/(√(p^(1 - p^)((1/n1) + (1/n2))

Where;

p^ = (p1 + p2)/(n1 + n2)

For, hispanic americans we have;

p1^ = 0.43 × 899 = 386.57

p2^ = 0.5 × 351 = 175.5

p^ = (386.57 + 175.5)/(899 + 351)

p^ = 0.45

Thus;

z = (0.43 - 0.5)/(√(0.45(1 - 0.45)((1/899) + (1/351))

z = -2.26

From z-distribution table, we have;

P-value = 0.01191

Since we have 2 samples, then probability = 2 × 0.01191 = 0.02382

This is less than our alpha level of 0.05,therefore we reject the null hypothesis and conclude that there is a significant difference in the proportion of homeowners between first generation and second generation Hispanic Americans.

3 0
3 years ago
Algebra 2 word problem: Urgent!
vesna_86 [32]

Answer:

180 hours

Step-by-step explanation:

Surfer #1 takes a capsule every 6 hours, but this is also equal to 2 capsules every 12 hours. Surfer #2 takes 1 capsule every 12 hours. Thus, both surfers take a total of 3 capsules every 12 hours.

By dividing 45 total capsules they need to consume by 3, the number of capsules the surfers consume every 12 hour, you get the total number of hours times 12 it takes for them to consume 45 capsules. 45 / 3 = 15, so it takes 15 * 12 hours for them to consume 45 capsules. This is equal to 180 total hours.

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3 years ago
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Orlov [11]

Answer:

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Step-by-step explanation:

please mark me brainliest

4 0
2 years ago
Read 2 more answers
A central angle of a circle measures 42 degrees. What else can be shown to measure 42 degrees?
Slav-nsk [51]

Answer:

Vertically opposite angles

Step-by-step explanation:

Given

\theta = 42^\circ

Required

What else can measure \theta = 42^\circ

The question has missing options. So, I will give a general explanation.

Using the attached image as a point of reference.

Given that:

\theta = 42^\circ

The value of b is calculated as:

b = \theta

Because b and \theta are vertically opposite angles

<em>This gives:</em>

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SVETLANKA909090 [29]

Answer:

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Step-by-step explanation:

One of the rules of exponents demands:

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Furthermore, you use the following rule for exponents of variables that already have an exponent:

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Thus, you can apply this rules in the following way:

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hence, the answer is 343x^6y^3z^3

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