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
Mice21 [21]
3 years ago
8

30 men can do a piece of work in 40 days .how long it take to complete the work if 5 men were reduced​

Mathematics
2 answers:
Pie3 years ago
8 0

Answer: 48 days

Step-by-step explanation:

If it takes 30men 40days to complete a task, 1 man takes 30×40= 1200 days

25 men will therefore take 1200/25= 48 days.

Pachacha [2.7K]3 years ago
5 0
30 men -> 40 days
1 man -> 1/1/3 days
30-5men = 25 men
25 men -> 1/1/3 x 25
= 33/1/3 days
You might be interested in
What are the x- and y- intercepts for the graph of 3x+y=15
allochka39001 [22]
To make the equation easier to look at change it to this: 
y = 15 - 3x 
To find the x intercept say y = 0. 
0 = 15 - 3x 
Subtract 15 from each side. 
-15 = -3x 
Divide each side by -3. 
5 = x <–––– x-intercept
The y-intercept of the equation is 15.
Hope this helps! 
6 0
3 years ago
The dimensions of a right triangle are shown in the diagram.
ryzh [129]

Answer:

18.4 cm

Step-by-step explanation:

For this problem, you would use <em>Pythagorean Theorem </em>or a^2+b^2=c^2. Don't forget that the c in the formula is always your hypotenuse or the longest side of the triangle. The a and the b are always the legs of the triangle. (It doesn't matter which leg is which letter) The hypotenuse is also always across from the 90 degree angle. <u>Picture the 90 degree angle as an arrow pointing to the hypotenuse.</u>  In this case, the hypotenuse (or c) is 20.7 cm. Now all you have to do is plug and chug! I hope this helps you and thanks for asking your question!!

3 0
2 years ago
Read and understand the problem Guide Questions solution​
enot [183]
Yeahhhhhhhhhhhhhhhhhhhhhh
3 0
3 years ago
Why is your nose in the middle of your face
aleksandr82 [10.1K]
Well, considering this is a Math Joke, I believe, the answer is, "Because it is the scenter." Or (Center).

Hoped this helped! :)
6 0
3 years ago
ind the value of the test statistic z using z equals StartFraction ModifyingAbove p with caret minus p Over StartRoot StartFract
Sergeeva-Olga [200]

Answer:

z=\frac{0.262 -0.25}{\sqrt{\frac{0.25(1-0.25)}{530}}}=0.638  

Step-by-step explanation:

Data given and notation

n=530 represent the random sample taken

X=139 represent the yellow pods in the random sample

\hat p=\frac{139}{530}=0.262 estimated proportion of yellow pods

p_o=0.25 is the value that we want to test

\alpha represent the significance level

z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that the true proportion is 0.25 or 25%:  

Null hypothesis:p=0.25  

Alternative hypothesis:p \neq 0.25  

When we conduct a proportion test we need to use the z statistic, and the is given by:  

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

The One-Sample Proportion Test is used to assess whether a population proportion \hat p is significantly different from a hypothesized value p_o.

Calculate the statistic  

Since we have all the info requires we can replace in formula (1) like this:  

z=\frac{0.262 -0.25}{\sqrt{\frac{0.25(1-0.25)}{530}}}=0.638  

6 0
2 years ago
Other questions:
  • Helppppp plzzzz ASAP!!!!!!<br> Thank you!!!!!!
    12·1 answer
  • Candy is on sale for $0.75 each. You have a coupon for $0.25 off your total purchase. Write a function rule for the cost of n pi
    14·1 answer
  • Are the functions f(x) = (x^2-1)/(x-1) and g(x)= x+1 equal for all x?
    15·1 answer
  • Please help me on the coke and the marathon one plzzzzzzzzzzzzzz!!.!!.,!!, thnx soooo much!!!
    15·2 answers
  • In Applied Life Data Analysis (Wiley, 1982), Wayne Nelson presents the breakdown time of an insulating fluid between electrodes
    7·1 answer
  • Mrs Harvey is making fresh raspberry punch. Each pitcher needs 1/2 cup of raspberries. If she makes three pitcher how many cups
    10·1 answer
  • The red graph (1) is the graph of f(x) = log(x). Describe the transformation of the blue function (2) and write the equation of
    8·1 answer
  • Pls help 10 points!!!!!
    9·1 answer
  • The number of wins for a high school football team is measured for the season. When the team plays at home, it is generally beli
    14·2 answers
  • PLEASE SOLVE THIS QUICKLY
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!