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
BlackZzzverrR [31]
3 years ago
15

3/7 of the people who live in the apartment building are men. 5/8 of the remaining people are women. The rest are children. a to

tal of 275 men and women live in the building. How man people live in the apartment building altogether?
Mathematics
1 answer:
alina1380 [7]3 years ago
7 0

Answer:

Step-by-step explanation:

people in building ---- x

children --- y

men + women + children = x

(3/7)x + (5/8)(4/7)x + y = x

3x/7 + 5x/14 + y = x

times 14

6x + 5x + 14y = 14x

14y = 3x

y + 220 =x

sub into the other one

14y = 3(y+220)

11y = 660

y = 60

then 14(60) = 3x ---> x = 280

So we have 280 people in the building.

check: 3/7 of 280 are men = 120

leaving 160 women and children

5/8 of these ot 100 are women

so we have 120 men, 100 women and 60 children!

You might be interested in
In the largest clinical trial ever​ conducted, 401,974 children were randomly assigned to two groups. The treatment group consis
BARSIC [14]

Answer:

The requirements for the hypothesis test does satisfied the method for testing the claim that from two population proportions the rate of polio is less for children given the salk vaccine.

Step-by-step explanation:

The percentage of children in the treatment group was:

(201229/401974)*100 = 49.9%

The percentage of children given placebo was:

(200745/401974)*100 = 50.1%

The percentage of children that developed polio in the treatment group:

(33/200745)*100 = 0.0164%

The percentage of children that developed polio in the placebo group:

(115/201229)*100 = 0.0571%

The percentage difference between the two group:

((0.0571-0.0164)/0.0571) = 61.62%

Therefore:

The amount of children used for each group was almost divided into half of the total amount of children. The test revealed although very small percentages of the both group developed polio, 68.62% more children given placebo than the children that was given the salk vaccine. Therefore, the study shows that the rate of polio is less for children given the salk vaccine and the the hypthesis test is satisfied.

6 0
3 years ago
Tim Worker wants to purchase an automobile warranty costing $856. If he chooses to make 12 equal payments, then in dollars and c
Svetlanka [38]

Answer:

<u>$71.33</u>

Step-by-step explanation:

An automobile warranty costing = $856

It is required to make 12 equal payments

So, we need to divide $856 over 12

So, the average payment = 856/12 = $71.33

3 0
3 years ago
Can someone teach me how do this! Please and thanks!
Katyanochek1 [597]

Check the picture below.

6 0
2 years ago
PLEASE HURRY
Delvig [45]

Answer:

D. larger than volume.

Step-by-step explanation:

Volume is just the space provided within something, while the mass is the weight of the something being evaluated. The bigger the volume, the larger the mass will be.

6 0
3 years ago
Read 2 more answers
Find the area of a rectangle that has a length of 12 m and a width of 7 m
NemiM [27]
You take the length times the width to get the area.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Which expression gives the closet estimate of 268+524
    11·1 answer
  • What is the discriminant of 3x2 + 6x = 2?
    7·1 answer
  • The volume of clay used to build a cylindrical pillar with a height of 9 centimeters is 324 pi cubic centimeters. The area of th
    6·2 answers
  • How do i graph 3/2 on the number line?<br>​
    9·1 answer
  • 37 dimes =$.37 which is the same as $3.70.<br> True or False?
    5·2 answers
  • Help will mark brainiest
    9·2 answers
  • Help! Give brainliest!
    9·2 answers
  • I think im right can anyone confirm that but if im not please tell me
    9·2 answers
  • Karim is painting a design on a cylindrical
    12·1 answer
  • Select the best answer for the question.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!