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
Ivahew [28]
3 years ago
8

Sammy has a counter that is red on one side and green on the other. The counter is shown below: A circular counter is shown. The

top surface of the counter is shaded in a lighter shade of gray and Red is written across this section. The bottom section of the counter is shaded in darker shade of gray and Green is written across it. Sammy flips this counter 20 times. What is the probability that the 21st flip will result in the counter landing red side up? fraction 1 over 2 fraction 1 over 4 fraction 20 over 21 fraction 1 over 20
Mathematics
1 answer:
Likurg_2 [28]3 years ago
8 0
The probability is 1/2 because there is a 50% chance it will land on either side. It does not matter how many times the coin has been flipped already.
You might be interested in
PLEASE PLEASE ANSWER!
muminat

The area of the shaded region is $8(\pi \ -\sqrt{3})\ \text{cm}^2.

Solution:

Given radius = 4 cm

Diameter = 2 × 4 = 8 cm

Let us first find the area of the semi-circle.

Area of the semi-circle = \frac{1}{2}\times \pi r^2

                                      $=\frac{1}{2}\times \pi\times 4^2

                                      $=\frac{1}{2}\times \pi\times 16

Area of the semi-circle = $8\pi cm²

Angle in a semi-circle is always 90º.

∠C = 90°

So, ABC is a right angled triangle.

Using Pythagoras theorem, we can find base of the triangle.

AC^2+BC^2=AB^2

AC^2+4^2=8^2

AC^2=64-16

AC^2=48

AC=4\sqrt{3} cm

Base of the triangle ABC = 4\sqrt{3} cm

Height of the triangle = 4 cm

Area of the triangle ABC = \frac{1}{2}\times b \times h

                                          $=\frac{1}{2}\times 4\sqrt{3}  \times 4

Area of the triangle ABC =  8\sqrt{3} cm²

Area of the shaded region

                   = Area of the semi-circle – Area of the triangle ABC

                   = $8\pi \ \text{cm}^2-8\sqrt{3}\ \text{cm}^2

                   = $8(\pi \ -\sqrt{3})\ \text{cm}^2

Hence the area of the shaded region is $8(\pi \ -\sqrt{3})\ \text{cm}^2.

3 0
3 years ago
Genevieve wants to verify that negative x is the simplified expression of one-fifth (5 x minus 20) minus one-half (4 x minus 8).
mart [117]

Answer: -x

Apply Multiplicative Distribution Law:- 1/5 * 5x - 1/5 * 20 - 1/2 * 4x - 1/2 *(-8)

Determine the sign for multiplication or division: 1/5 * 5x - 1/5 * 20 - 1/2 * 4x + 1/2 * 8

Cross out the common factor: x - 1/5 * 20 - 1/2 * 4x + 1/2 * 8

Cross out the common factor: x - 4 - 1/2 * 4x + 1/2 * 8 - 4 - 2x + 1/2 * 8

Cross out the common factor: x - 4 - 2x + 1/2 * 8

Cross out the common factor:  x - 4 - 2x + 4

Reorder and gather like terms: (x - 2x) + (- 4 + 4)

Collect coefficients for the like terms: (1 - 2) * x + (- 4 + 4)

Calculate the sum or difference :  - x + (- 4 + 4)

The sum of two opposites equals 0: -x

Answer: -x

Learn more about Multiplicative Distribution Law here:brainly.com/question/2898526

#SPJ4

3 0
2 years ago
Need help un geomtry
almond37 [142]

Answer:

x = 138

Step-by-step explanation:

The 2 arcs above the diameter form a semicircle = 180°

x + 42 = 180 ( subtract 42 from both sides )

x = 138

4 0
2 years ago
What is 75 times 38 to the power of 2
Dimas [21]

Answer:

108300 I’m not sure tho :’)

7 0
2 years ago
Read 2 more answers
Cups
shepuryov [24]

Answer:

12 cups of sugar

Step-by-step explanation:

12 cups of sugar for 6 dozen cookies.

3 0
2 years ago
Other questions:
  • The sycamore grove contains 30 sycamo
    14·1 answer
  • A ball is dropped from a height of 25feet and allowed to bounce until it comes to a rest. Each time the ball bounces it rebounds
    7·1 answer
  • without looking not picking a red hat from a box that holds 20 red hats, 30 blue hats, 15 green hats, and 25 white hats
    14·1 answer
  • NEED HELP ASAP BRAINLIEST PLEASE
    9·1 answer
  • Please help now!!!!!!!
    14·1 answer
  • Lucia and Marcus are playing a board game. They roll 2 dice (number cubes) to see who goes first. The person who rolls the highe
    5·1 answer
  • Write an equation of the line below ​
    15·2 answers
  • The total number of students enrolled in MATH 123 this semester is 6,072. If it decreases by 0.22% for the next semester, what w
    5·1 answer
  • 100 POINTSbrainlest to the person who get it right
    15·2 answers
  • Which one have is the coldest temperature negative numbers or positive numbers
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!