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
lukranit [14]
3 years ago
6

It takes 12 men 5 days to complete a job

Mathematics
2 answers:
Taya2010 [7]3 years ago
8 0

Answer: 8

Step-by-step explanation: i took the test

Rzqust [24]3 years ago
6 0

It will take 3 men 20 days to complete the job.

You might be interested in
186:403 in simpleast form<br><br>​
natita [175]

Answer:

6:13

Step-by-step explanation:

both are divisible by 31

3 0
3 years ago
4. Is rap music more popular among young Indians than among young Asians? A sample survey compared 634 randomly chosen Indians a
bulgar [2K]

Answer:

H0 is accepted

there is no difference between the proportions of Indian and Asian young people who listen to rap music every day.

Step-by-step explanation:

Given  a sample survey compared 634 randomly chosen Indians aged 15 to 25 with 567 randomly selected Asians in the same age group.

p_{1} = \frac{368}{634} =0.580

It found that 368 of the Indians and 130 Asians listened to rap music every day.

p_{2} = \frac{130}{567} =0.229

Null hypothesis H0: there is no difference between the proportions of Indian and Asian young people who listen to rap every day.

p_{1} = p_{2}

Alternative hypothesis:- p_{1} \neq  p_{2}

Level of significance α = 0.05

The test of statistic

z = \frac{p_{1} -  p_{2}}{\sqrt{pq(\frac{1}{n_{1} }+\frac{1}{n_{2} })  } } }

where p = \frac{n_{1}p_{1} + n_{1}p_{2}}{n_{1}+n_{2}} = \frac{634(0.580)+567(0.229)}{634+567}

       p = 0.414

and q = 1-p = 1- 0.414 =0.586

Z = \frac{0.580-0.229}{\sqrt{0.414(0.586)(\frac{1}{634} +\frac{1}{567} } } }

on calculation , we get

z = 0.300 ><1.96 at 95 % level of significance

H0 is accepted

there is no difference between the proportions of Indian and Asian young people who listen to rap every day.

3 0
3 years ago
The width of the Ochoa Community Pool is 20 feet.The length is twice as long as it’s width.What is the perimeter of the pool?
yan [13]
The perimeter is 120
Hope this helps:)
5 0
3 years ago
Question four need to know what I did wrong I need to do it I need to understand
Nuetrik [128]

If there are 189 children, then there are 189 divided 7 = <em>27 groups of 7 children.</em>

As mentioned in the problem,<em> for every 7 children, there are 2 caretakers </em>therefore, there are a total of 2 x 27 = 54 caretakers in the local daycare.

So, in total, there are 189 children + 54 caretakers = 243 people in the daycare facility.

4 0
1 year ago
A lake has a small patch of lily pads and every day the patch grows to double its size. It takes 32 days for the patch to cover
S_A_V [24]

Answer:

<em>It took 31 days for the patch to cover half the lake</em>

<em></em>

Step-by-step explanation:

The patch grows to double its size everyday

the patch completely covers the lake in 32 days

Since the patch doubles itself everyday, this means that the previous day before the 32nd day, the lake was just half covered.

Therefore, the the patch covered half the lake on the 31st day, i.e <em>it took 31 days for the patch to cover half the lake</em>

<em></em>

6 0
3 years ago
Other questions:
  • On monday, janelle earned $16 for 2 hoursof babysitting. getting paid the same rate, she earned $40 for babysitting on saturday.
    11·1 answer
  • 4 x (6-2)^2÷(3-1)^3<br><br>PLEASE HELP ME
    12·2 answers
  • If a=2b, then 5+7(a-2b)=
    14·2 answers
  • What is 400,000 times 200 in scientific notation
    12·2 answers
  • Which value makes -1/2x-8&lt;1 true A.-4 B.-20 C.3
    9·1 answer
  • How do you do number 8?? Please help
    6·1 answer
  • Ordered pairs does not represent a function?
    8·1 answer
  • What is the value of q ?
    5·2 answers
  • Donna borrowed $10, 500 at a simple interest rate of 4% for 3 years to buy her new car. How much interest would Donna pay and ho
    12·2 answers
  • Given a point A(-2,5), find the coordinates of a point B so that the line segment AB has each slope.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!