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
IrinaVladis [17]
3 years ago
11

There are 24 children in a class, 16 brown-haired and 8 black-haired. Two students are randomly selected for a stage

Mathematics
1 answer:
Readme [11.4K]3 years ago
3 0

Step-by-step explanation:

Total children = 24

Probability of 2 black haired = 2/ 8 = 1/4

You might be interested in
The chair of the meeting collects $2702 from 28 people.Whats the unit rate?
SCORPION-xisa [38]

Answer:

$96.50

Step-by-step explanation:

5 0
3 years ago
Which equation is represented by the intersection of the graphs below?<br><br> Image is above.
zaharov [31]

Option B:

sin x = 1 is the equation represented by the intersection of the graph.

Solution:

The graph lies between -1 and 1 in y-axis.

x-axis of the graph is all real numbers.

The graph oscillates between -1 and 1 and a shape that repeats itself every 2π units.

That is the domain of the graph is all real numbers.

The range of the graph is [-1, 1].

It clearly shows that, it is the graph of sinx = 1.

Hence sin x = 1 is the equation represented by the intersection of the graph.

Option B is the correct answer.

3 0
3 years ago
Find the height of a triangle that has an area of 54 cm2 with the width 3 cm less than its height.
iren2701 [21]

The height of a triangle is 9 cm

<h3>What is Triangle?</h3>
  • A polygon with three edges and three vertices is called a triangle. It is one of the fundamental geometric shapes. Triangle ABC is the display style for a triangle with vertices A, B, and C.
  • In Euclidean geometry, any three points that are not collinear produce a singular triangle and a singular plane (i.e. a two-dimensional Euclidean space).
  • In other words, every triangle is contained in a plane, and there is only one plane that contains that triangle.
  • All triangles are enclosed in a single plane if all of the geometry is the Euclidean plane, however, this is no longer true in higher-dimensional Euclidean spaces.
  • Except when otherwise specified, this article discusses triangles in Euclidean geometry, namely the Euclidean plane.

given that

let the height of the triangle be x

then the width is x-3

Area = \frac{height \times length}{2}

54 = x(x -3)

54 = x^2 -3x

x = 9

height = 9 cm

width = 6cm

Therefore, the height of a triangle is 9 cm.

To learn more about the triangle with the given link brainly.com/question/11897796

#SPJ4

8 0
1 year ago
the perimeter of a semicircle is 108 cm what is the perimeter of the square drawn on the diameter of the semicircle ​
Andreas93 [3]

Answer:

Step-by-step explanation:

the perimeter of the semi-circle would be the diameter plus the circumference of half of the circle.  

They want to know the perimeter of a square using the diameter of the sem-circle as ONE side, so the perimeter of the square would be 4 times the ONE side.

We should recall:

diameter = 2 times the radius     circumference of a cirlce = 2π r

How do we find the diameter of the of the semi circle?

The perimeter of the semi circle is given as 108 cm

Perimeter of the semicirle =    2r + π r         diameter plus semi circumference

                                  108   =   r ( 2 + π)           factor out the r and solve for r

                     108 / (2 + π)   =   r                       divide both sides by ( 2 + r)

Now we know r, the perimeter of the squqre is 4 times 2r  or  8r

           perimeter of square = 8  [ 108 / (2 + π) ]               π  I used 3.14

                                             =  864 / 5.14

                                             =   168.1 cm       I got rounded to nearest tenth    

<em>When I re-checked by work I found a few math,  logic and calculation errors.  Please re-check my answer for any more mistakes.</em>

       

4 0
3 years ago
You pay a registration fee and a monthly fee to join a local fitness center. The table shows the total cost of joining the fitne
Alekssandra [29.7K]

Answer:

100 divided by 3=33.33 therefore 33.33 per month

Step-by-step explanation:

Equation:

33.33x9= 299.97

This is for 9 months

3 0
3 years ago
Other questions:
  • Pete is making decorations for a dinner party.The instructions tell him to use 9 flowers for a medium-sized decoration.Complete
    10·1 answer
  • 6/7 times 4/5 times 35
    12·2 answers
  • I know it is a long question but please I will mark brainlist to the person who answers please help
    11·1 answer
  • Which answer orders the number from least to greatest
    10·1 answer
  • The area of the parallelogram below is ____ square meters. A parallelogram with height labeled with 8 meters. The top horizontal
    13·2 answers
  • Plss answer correctly<br> 4x - 8 - 2x = 10
    7·2 answers
  • 20 points! Write an exponential function in the form y=ab^x that goes through points (0, 8) and (2, 200)
    5·2 answers
  • Select all ratios that are in their simplest form.<br> A 21:19 B 14:29 C 18:24 D 2:16 E 26:3
    11·2 answers
  • A and B are independent events. P(A) = 0.50 and P(B) = 0.30. What is<br> PA and B)?
    15·1 answer
  • Jackson has a collection of 260 coins. How many coins represent 5% of his collection?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!