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
EastWind [94]
3 years ago
12

A fair coin is tossed three times.what is the probability that at least two heads will occur given that at most two heads have o

ccurred?
Mathematics
1 answer:
Rainbow [258]3 years ago
5 0
<span>There are eight possible outcomes: HHH,HHT,HTH,HTT,THH,THT,TTH,TTT. Seven (all but HHH) have at most two heads. Three of these seven (HHT,HTH,THH) have at least two heads. The probability is therefore 3 in 7 or about 42.86%.</span>
You might be interested in
The area of a bulletin board is 55 ft2. The length is nine feet less than four times the width. Find the length and the width, i
galben [10]

Answer:

The length and width are 11ft and 5ft respectively

Step-by-step explanation:

let the

length = L

Width = W

Area = LW = 55

The length is nine feet less than four times the width

L = 4W - 9

W (4W - 9) = 55

4W^2 - 9W -55 = 0

4W^2 - 20W + 11W - 55 = 0

4W(W - 5) + 11(W - 5) = 0

(W - 5)(4W + 11) = 0

W - 5 = 0 , 4W + 11=0

W = 5 or  - 11/4

since the width cannot be negative, W = 5

LW = 55

L = 55/5

L = 11

The length and width are 11ft and 5ft respectively.

7 0
3 years ago
Susan Sound predicts that students will learn most effectively with a constant background sound, as opposed to an unpredictable
alukav5142 [94]

Answer:

An ANOVA test

Step-by-step explanation:

You will use the ANOVA test, which is a test that compares the means of more than 2 samples.  Since the teacher used 3 test groups, she would have to use this test if she wanted to do a hypothesis test to determine if the means are equal.  

*This test only tells us if the means are equal, it won't say which is greater than the other.  You would have to do 3 individual hypothesis tests comparing 2 means at a time in order to determine that.

8 0
2 years ago
Word bank please help
anastassius [24]
X rays=E
Microwaves=A
Gamma rays=C
Radio waves=F
Infrared waves=D
Ultraviolet waves=B
8 0
2 years ago
What's the least common denominator of 3/4 4/5 and 2/3
jok3333 [9.3K]

LCD(34, 45, 23) = LCM(4, 5, 3) = 22×3×5 = 60

34 = 4560

45 = 4860

23 = 4060

7 0
3 years ago
Read 2 more answers
Marilyn Manson anybody else a fan ?​
soldi70 [24.7K]

Answer:

wait who is that again?

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • How do you simplify 1/5(40x^5+13x^3-3x-5)-(3x^5-5x^3+5x)
    9·1 answer
  • The estimated population of the world in the middle of 2010 was 6,852,472,823. Express this value in scientific notation.
    5·1 answer
  • An electronics store sold 4% of computers that were on sale if only 12 computers were sold how many computers were not sold
    11·1 answer
  • A granite monument has a volume of 25,365.4 cm3. The density of granite is 2.7 g/cm3. Use this information to calculate the mass
    6·2 answers
  • Write about a
    5·1 answer
  • At the county fair, the Baxter family bought 6 hot dogs and 4 juice drinks for $16.70. The Farley family bought 3 hot dogs and 4
    7·1 answer
  • Janella is using this model of two squares and a right triangle to prove the Pythagorean Theorem.
    10·1 answer
  • Negative 4 squared + (5 minus 2) (negative 6)
    9·1 answer
  • What is the capacity of juice which measures 3L 9dL 3cL 9mL if it is equally divided into 3 bottles?
    6·1 answer
  • A car that sold for $11,900 has a sales tax of $767. How
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!