A fair coin is tossed three times. What is the probability of getting at least two heads?

Answers

Answer 1
the answer is 50%

if you list out the possibilities, you get

(H being heads, T being tails)

HHH <- 3 heads
HHT <- 2 heads
HTH <- 2 heads
HTT
THH <- 2 heads
THT
TTH
TTT

we counted 4 of them to have at least 2 heads out of the 8 possibilities

4/8 = 1/2 which is 50%

Related Questions

Identify like Terms
8x2 yx3 9x2 y2 5y

Answers

8x2 9x2 y2 5y yx3

Explanation:

Constant of Variation

State the relationship between the graphs of f(x) and g(x)

f(x) = 1/x², g(x) 1/x⁴

a. g is closer to the y-axis, and f is closer to the x-axis.
b. g is symmetric about the y-axis, and f is symmetric about the origin.
c. g is symmetric about the y-axis, and f is symmetric about the x-axis.
d. g is closer to the axis, and f is closer to the y-axis.

Please select the best answer from the choices provided

Answers

Answer:

D. G is closer to the axis, and f is closer to the y-axis.

Step-by-step explanation:

I calculated it logically

Layla is making pizza for a pizza party each pizza requires 1/8 pound of cheese how many pounds of cheese does she need to make 10 pizzas express your answer in simplest form

Answers

10/80 pounds of cheese

1/8×10=10/80

PLEASE HELP I don’t know the answer and I need it fast

Answers

you need to show the diagram from the top part of the question order for us to answer... because we dk where angle g is located

Which equation has x = −2 as a solution?

a
2x + 10 = 14
b
2x + 8 = 4
c
3x + 10 = 1
d
3x − 8 = 7

Answers

Answer:

B

Step-by-step explanation:

The answer is B because 2 x -2 + 8 = 4 So it matches up in that equation so answer is b

Answer:

2×+8=4

Step-by-step explanation:

hope it helps.....................

the width of a rectangle is 7 cm less than twice its length. its area is 30 square cm. find the dimensions

Answers

Answer:

l = 6 cm

w = 5 cm

Step-by-step explanation:

l(2l - 7) = 30

2l^2 - 7l - 30

(2l + 5)(l - 6)

l = 6

2(6) - 7 = 5

Is -2.4 and 1.5 repeating or terminating decimals?

Answers

Answer:

terminating decimals

Step-by-step explanation:

18
Type the correct answer in each box. Use numerals Instead of words. If necessary, use / for the fraction bar(s).
The grades received by 200 students follow a normal distribution. The mean of the grades is 70%, and the standard deviation is 7%.
The number of students who received a grade greater than 70% is about
. and the number of students who got a grade higher than
84% is about
Reset
Next

Answers

Answer: 100

5

Step-by-step explanation:

a) The mean of a normal distribution is also the median. Half the population will have values above the mean. Half of 200 is 100, so ...

... 100 students will have grades above 70%.

b) 84% is 14% above the mean. Each 7% is 1 standard deviation, so 14% is 2 standard deviations above the mean. The empirical rule tells you 95% of the population is within 2 standard deviations of the mean, so about 5% of students (10 students) got grades higher than 84% or lower than 56%. The normal distribution is symmetrical, so we expect about 5 students in each range.

... about 5 students will have grades above 84%.

Helllps please help this timed please I will mark brainliest. PLz. NO LINKS OR I WILL REPORT YOU. Please give an explanation.

Answers

Answer:

please????

Step-by-step explanation:

Help plz plzzzzzzzzzzz ASAP

Given what we observed in #8, how does the area of AFD above compare to the area of ABC ? Explain your answer.

Answers

Answer:

This is because the four triangles formed are all identical to each other.

What is the volume of a cylinder with a height of 13.6 cm and a base with a radius of 6.6 cm, to the nearest tenth of a cubic centimeter? !!!asap

Answers

Answer:

1,861.1 cubic centimeters

Step-by-step explanation:

Volume of a cylinder is

[tex]v = \pi {r}^{2}h[/tex]

so you would plug it in and solve

[tex]v = \pi ({6.6})^{2}13.6[/tex]

Express 72km/h in meter per sec​

Answers

Answer:

20meter per second is tw correct answer

20 m/s

Step-by-step explanation:

1km/h = 1000m/3600s = 5m/18s

⇒ 72 × 5 ÷ 18 = 20 (m/s)

A cylinder has a height of 9.5 cm and a radius of 4 cm. What is its volume? Use 3.14 for π and round your answer to the nearest tenth.

Answers

Answer:

477.3

Step-by-step explanation:

3.14x 4² x 9.5

477.28

to the nearest tenth= 477.3

Find the arc length

Answers

Answer:

13.92

Step-by-step explanation:

You can refer to the photo I attached

This is a review of last lesson's concept You have 2 red marbles, 3 black marbles, and 2 blue marbles. You pick a marble, look at it, and replace it in the bag Then you pick a marble again. What is the probability of picking a red marble both times?​

Answers

You add all of them up and then you get 7 so now you know you have a total of 7 marbles but you have 2 red marbles so it’s 2/7

Hey guys marking brainliest

What should I add in the background

Answers

Answer:

A mountain?

Please keep things on topic

Answer:

answer: Yes! Add some color!

Write the equation of the lines which have the following parameters. Write the equation in slope intercept form.


1. slope = 3; y-intercept = 5
2. slope = 2/5; y-intercept =-10
3. slope = -3/2; y-intercept = -2
4. slope = 18; y-intercept = 0
5. slope = -3.253; y-intercept =-14.159
6. Challenge problem: x-intercept = -2; y-intercept = 6

Answers

Answer:

Step-by-step explanation:

Slope intercept form is :

y = mx + b

where m is the slope and b is the y-intercept.

So, given slope and y-intercept, all you have to do is plug in slope for m and y-intercept for b.

1.) y = 3x + 5

2.) y = 2/5x - 10

3.) y = -3/2x - 2

4.) y = 18x

5.) y = -3.253x - 14.159

For question 6, you need to calculate the slope given the two points then plug in the slope and y-intercept to get the equation.

So to find slope, you use the equation below:

slope = (y2 - y1) / (x2 - x1) = (6-0) / (0 - -2) = (6) / (2) =3

6.) y = 3x + 6

Can someone please help me with 4 and 5 ???

Answers

Answer:

4. D  

A: -25.5=a

B: b=-4

C: c=12

D: d=8

Step-by-step explanation:

4.Between a and d they are the 2 bigger values but D was the greatest out of all of them. - divided by a - will result as a positive and 7/9=0.77 and 19/12 *I looked for the least common factor and multiplied numerator and denominator to 12 depending on the denominators value. Ex: since one of my denominators was 4, I multiply the whole fraction by 3 to get 9/12 and the other was 5/6 times 2 is 10/12 and just add 10/12 by 9/12 which is 19/12.

5.

A: All I did was multiply 8.5 and -3 and get -25.5=a.

B: I add 7 on both sides of the equation and -7 and 7 get canceled off and -11+7=-4. b=4.

C: I multiplied - to -3 and got 3, now I can subtract -3 on both sides. 15-3=12 so c=12.

D. I had to divide by 4 on both sides to get d by itself. 32/4=8 so final answer would be d=8.

A survey found that 25% of people gave up their home phone years ago and only use a cell phone now. If 3,000 people said that they only use a cell phone now, how
many total people were surveyed?

Answers

Answer:

12000

Step-by-step explanation:

25/100 = 3000/total people surveyed

total people surveyed =  3000×100 / 25

                                     =   12000 people surveyed

Urgent, HELP! I need this ASAP

Answers

Answer:

Y repersents 1

Step-by-step explanation:

Answer:

y= 6 z = 7.5   x = 5(1/3)

Step-by-step explanation:

the ratio  from small to big  multiply by 4/3

                 from big to small multiply by  3/4

Please Help!!! I will give brainliest!

Answers

Answer:

D

Step-by-step explanation:

Table a has a output set for every input, making it a function. However, table B has 2 different outputs for 1 input. Therefore, A is a function and B is not.

What is the sales tax
On a camera priced at $110 if the sales tax rate is 6.1%


WILL GIVE BRAINKISR


Xx
X
X

Answers

Answer:

Before Tax Price: $110.00

Sale Tax: 6.10% or $6.71

After Tax Price: ($116.71)

Step-by-step explanation:

Someone walked%s the length of this room
then walked backward 4 the length of this
room before walking forward / the length
of the room and hiding the key there. How
far across the room (as a fraction) is the
key? Use a "/" as a fraction bar in your
answer.

Answers

Answer:

E-e-e-e-et-t-t-o.... B-b-b-b-b-baka h-h-huh... g-g-g-g-g-g-gOmensas-s-s-sai S-senpai...

Step-by-step explanation:

uHM yeah

PLEASE HELP THIS IS VERY IMPORTANT I'LL GIVE YOU BRAIN THING IF ITS CORRECT!! <3 NO LINKS PLEASEE.

Answers

Answer and Step-By-Step Explanation:

The point shown is marked at (36,82), meaning that the panda is 36 months old and weighs 82 kilograms.  To plot the next point, just go up from 110 on the graph to 90 and mark a point.  (Sorry I tried to put an image but it was extremly blurry.)

a ratio of 14:40 =13;?

Answers

Answer:

9.75

Step-by-step explanation:

Write sixty-five and three hundredths

a. as a decimal number

as a mixed number​

Answers

Step-by-step explanation:

answer in decimal form 65.03

answer in mixed number form 65 3/100

Find the missing angles in the diagrams below.

Answers

A. X=51, 2x=102
B. A= 142, c=38, t =38

Answer:

a. 27° + (2x° + x°) = 180° (linear pair)

27° + 3x° = 180°

3x° = 180°-27°

x° = 153°/3

x° = 51°

2x° = 2×51 = 102°

b. a° = 142° (vertically opposite)

c° + a° = 180° (linear pair)

c° = 180° - 142°

c° = 38°

i° = c° = 38° (vertically opposite)

Loretta is rolling an unfair 6-sided die with a single number between 1 and 6 on each face. She has a 70% chance of rolling a four. She is playing a game with a friend and knows that if she rolls a four on three of her next five rolls she will lose the game. She wants to determine the probability that she rolls a four on three of her next five rolls. Loretta sets up her simulation using a table of random digits between 0 and 9. She let 0-6 represent rolling a four and 7-9 represent not rolling a four. She selects five digits. She performs the simulation 18 times and records her results in the table. What is the probability that Loretta rolls a four on 3 of 5 rolls? LE A) 1 18 B) 6 C) 5 6 D) 17 18​

Answers

The probability that Loretta rolls a four on 3 of 5 rolls is A) 1/18.

To find the probability that Loretta rolls a four on 3 of 5 rolls using her simulation, we need to count the number of times she rolls a four three times out of the five rolls.

Looking at the table of her results, we can count that Loretta rolled a four three times in a row in 6 out of the 18 simulations.

Therefore, the probability that Loretta rolls a four on 3 of 5 rolls using her simulation is:

P = number of times she rolls a four three times out of 5 rolls / total number of simulations

P = 6 / 18

P = 1/3

So the answer is A) 1/18.

To learn more about probability here:

https://brainly.com/question/30034780

#SPJ1

2.1 There are 5 red balls, 3 blue balls and 2 green balls in a box. Suzie takes at random a ball from the box and gives it to her friend. She then takes at random another ball from the box.
2.1.1 Write down the sample space of this experiment. [2]
2.1.2 Work out the probability that both balls are of the same colour.

Answers

Answer:

23

Step-by-step explanation:

I just did it.

(I’ll give points + brainalist for the correct answer with an explanation)

Answers

Answer:

b

Step-by-step explanation:

divide 1/4 by 20

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