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
sergey [27]
3 years ago
7

If someone could help me answer this and possibly give me a step-by-step for future reference that'd be great thanks.

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
6 0

Answer:

Let's look at the Venn diagram and the data we have:

There are 12 pupils

9 have a brother

7 have a sister

2 have neither.

Now let's look at the diagram.

We know that the circle B represents the pupils who have a brother

Circle S represents the students that have a sister.

Then the intersection of the circles, represents the number of students that have both.

And the space outside the circles represents the pupils that do not have a brother nor a sister.

Then the first thing we can complete is a 2 in the bottom left corner, because we already know that there are 2 pupils that do not have brothers nor sisters.

Now let's find the number of students that have both, brothers and sisters:

There are 12 pupils.

9 have a brother

7 have a sister

2 have neither

if we add that, we get:

9 + 7 + 2 = 18

This is larger than 12, this means that we are counting some of the students more than once.

If X is the number of students that we are counting twice, we should have:

18 - X  = 12

18 -12 = X = 6

There are 6 students who we are counting twice, and this happens because these 6 students have a brother and a sister.

Then in the intersection of both circles we should put a 6.

At the left of that (in the part that we have only circle B) we need to write the number of students that only have a brother, this is the number of students that have a brother minus the number of pupils that have a brother and a sister, this is:

9 - 6 = 3

We need to write a 3 in that square.

And in the last square (the one that is only one circle S) we need to write the number of pupils that only have a sister, this is calculated in the same way than before, this is:

7 - 6 = 1

We need to write a 1 in the rightmost square.  

You might be interested in
Sasha wants to buy some dresses over the Internet. Each dress costs $7.15 and has a shipping cost of $9.95 per order. If Sasha w
sveticcg [70]
   7.15
x 9.95
---------
$51.30
8 0
3 years ago
Read 2 more answers
Name two intersecting line segments that are not perpendicular.
liubo4ka [24]
I don't see anything, but any line that doensnt have the right angle sign is not perpendicular. 
4 0
3 years ago
In a class of 55 students, 15 students liked Maths but not English and 18 students liked English but
ra1l [238]
Easy!
You take the total number of students (55) then you remove the people that only like math and remove the people that only like English and remove the people that like none of them and what’s left is how many like both subjects.

55-15-18-5=17 students that like both subjects!

6 0
2 years ago
Given that m 2 = 56 in the diagram what is m 8<br>A 134<br>B 66<br>C 124 <br>D 56​
algol [13]
The answer is:
Letter B
5 0
3 years ago
Using a simulator at space​ camp, you practice landing your individual spaceship on landing platforms that have different shapes
Mila [183]

The Area of the platform is 33m²

Step-by-step explanation:

As the question says, the height of vertex from the base (D from AB) is 7m whereas the height of left vertex from the base (E from AB) is 4m

Thus it means the height of the Δ DCE (DX)= 7-4 ⇒3m

Since the platform is five-sided, the figure can be broken down into constituting parts

  1. Parallelogram ║ABCE
  2. Δ DCE

Are of the figure= Area of ║ABCE+ area Δ DCE

Area of ║ABCE= breadth * height

= 6*4 ⇒24m ²

Area Δ DCE= ½*(base)(height)

Putting the value of base is 6m and height as 3m

Area Δ DCE= ½*6*3

=9m ²

Total area= 24+9= 33m ²

3 0
3 years ago
Other questions:
  • It is 3 - kilometer hike to river PJ walks for 500 meters. Then he walks another 1,050 meters. How many more kilometers must PJ
    14·1 answer
  • Your answer should be a polynomial in standard form.<br> (X+2)(X+ 3) =
    7·2 answers
  • Help I need help with 4
    10·1 answer
  • Point D is on segment BC, Segment BC measures Bx
    5·1 answer
  • Billy has 5 1/4 yards of wire if he uses for is 4 7/8 yards to make a fence how much would he have left​
    13·1 answer
  • Find the value of x. Round to<br> the nearest tenth.<br> 17°<br> 47<br> Х<br> X =[?]
    7·1 answer
  • Plz help asap i need the right answer who ever is right get brainiest
    13·1 answer
  • Find the height of a cone when its diameter is 8 inches and the volume is 100 cubic inches
    12·1 answer
  • 1. The temperature was -8°F and rose by 2°F. What is the new temperature? Expression:​
    6·1 answer
  • Find side x. Round to the nearest tenth.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!