Mathematics Middle School

A trick coin is made such that when it is tossed there is a 20% chance of heads landing face up and an 80% chance of tails landing face up. If the coin is tossed twice, what is the probability that the coin will land with heads facing up both times?

Answers

Answer 1
P( heads on one toss) = 0.20

P  ( 2 heads)  = 0.20 * 0.20  = 0.04   or 4%
Answer 2

Answer:  4 %

Step-by-step explanation:

According to the question,

20% chance of heads landing face up

Therefore, probability of getting a head, [tex]P(H) = \frac{20}{100} = \frac{1}{5}[/tex]

The probability of getting tail, [tex]P(T) = \frac{80}{100} = \frac{4}{5}[/tex]

Thus, the  probability that the coin will land with heads facing up both times

= [tex]\frac{1}{5}\times \frac{1}{5}[/tex]

=   [tex]\frac{1}{25}[/tex]

=   0.04 or 4 %

Thus the required probability is 4 %.

Related Questions

The table shows which school subjects are favored by a group of students. Predict the number of students out of 400 that would pick science as their favorite subject.
Subject Number Of Responses
Math 6
Science 3
English 4
History 7

Answers

First, add up all of the numbers.

6+4+7+3=20

3 out of the 20 students favour Science.

You need to find the total out of 400, so set up a proportion.

3/20 = x/400

To solve the proportion, you multiply 3 and 400 to get 1,200, then divide it by 20, which is 60.

So out of the 400 student, 60 favour Science.
60 should favor science

What is a line segment???

Answers

It's a part of a line that is bounded by two distinct points. Contains every point on the line between the endpoints

The most basic figure in geometry is called a point. For example, point A which can also represent as .A. If we have a point, we usually we usually label it with a capital letter. If we have two points such as points X and Y, we can introduce our next figure in geometry which is called a line segment. For example, segment XY. A line segment is defined as a figure that is composed of two points which are called the endpoints and all the points in between. Segment XY can be represented as XY with a segment drawn over it.

I need to learn how to do this

Answers

2x + 6 >-6

subtract 6 from both sides

2x > -12

divide both sides by 2

x > -6

recall that two angles are complementary if the sum of their measure is 90 degrees find the measure of the two complementary angles if one of the angle is twice the other

Answers

The two complimentary angles will be 60 degrees and 30 degrees

Jessie enjoys running everyday for excercise. On Monday, he ran 3.30 miles. On Tuesday, he ran 3.09 miles and on Wednesday he ran 2.98 miles. On what day did Jessie run the farthest?

Answers

He ran the farthest on Monday.
Final answer:

Jessie ran the farthest on Monday when he ran 3.30 miles.

Explanation:

To determine on which day Jessie ran the farthest, we need to compare the distances he ran on each day. Let's list the distances:

Monday: 3.30 milesTuesday: 3.09 milesWednesday: 2.98 miles

From the list, we can see that Jessie ran the farthest on Monday when he ran 3.30 miles.

Learn more about running distance here:

https://brainly.com/question/29012018

#SPJ2

The product of six minus a number and five equals sixty when divided by 2. Which equation represents the sentence? A) 6(x - 5) 2 = 60 Eliminate B) 5(x - 6) 2 = 60 C) 6(5 - x) 2 = 60 D) 5(6 - x) 2 = 60

Answers

i think D because  it looks like an answer that matches the question :)
D is the correct answer

If an angle measures 43°, then the angle is acute.
Are the statement and its inverse true?
Both the statement and its inverse are false.
The statement is false, but the inverse is true.
Both the statement and its inverse are true.
The statement is true, but the inverse is false.

Answers

The statement is true, but the inverse is false. 
Anything below 90° is a acute angle, so any degree between 1 and 90 is acute. Meaning if it inverse doesn't equal 43°, but can be 44° for example, it can be acute.

Answer:the answer is The statement is true, but the inverse is false.

Step-by-step explanation:

Someone pleaseee!!! I really need it thank u

Answers

3 is the chord.

 a chord lies inside a circle and does not continue outside of it.

A chord of a circle is a straight line segment whose endpoints both lie on the circle.

Hence, the answer is 3.

PLEASE HELP

Which is the graph of the linear function that is represented by the equation y=1/2x-2



Answers

To do this, lets identify the slope and the y-intercept.

y = mx + b
y = -1/2x - 2

The slope is -1/2 and -2 is the intercept.

So, it is the 3rd one.

Hope this helps!
It would be the 3rd answer. Linear functions take on the equation
y = mx + b , m is the slope and b is the y intercept. That means in the equation given
m = 1/2 (slope) and b = -2 (y intercept)
The slope is rise over run or y/x so since the slope is 1/2 for every 1 unit moved up, you move 2 across. The y intercept is where the graph crosses the y axis.

In a class, three students were running for president. Sara got 1/2 of the votes, Mike got 1/3 of the votes. What fraction of the votes did Imani get?

Answers

You need to give some sort of table or the number of the total vote, so I can know and help you out, I can't do this without a table or the total votes.

Order from least to greatest: 6.24, 6.08, 6.009, 0.6

Answers

0.6, 6.009, 6.08, 6.24

3n-(2 + n) what value makes this expression equal to 6?
A.5 B.6 C.3 D.4

Answers

The answer is D. If you substitute those values for n, you should be able to find that 4 makes the expression equal to 6.
3n-(2 + n) 
= 3n - 2 - n
= 2n - 2

if this 2n - 2 equal to 6 then

2n - 2 = 6
2n = 8
  n = 4

answer
D.4

1-3 write in simplest form.Does the first factor increase or decrease explain please

Answers

the top # * and the bottom # *
so for the first one, 1*2 =2 
3*5 =15
so we get 2/15

Write an integer for each situation identify its opposite and describes its meaning
Question: 5 strokes above par

Answers

5
Opposite -5
Above means positive
Par=0
Integer would be positive
Final answer:

The integer representation of '5 strokes above par' is '+5', while its opposite is '-5', representing '5 strokes under par'. The positive and negative signs indicate whether you are above or below the par in golf.

Explanation:

In the context of golf, '5 strokes above par' means that it took five more strokes than the par to complete a hole or course. We can express '5 strokes above par' as the integer +5. In this context, the positive sign in front of 5 indicates you are above par, which means it took you more swings to finish.

Conversely, the opposite of +5 is -5. This would mean '5 strokes under par,' suggesting that it took five fewer strokes than the par to finish the hole or course. Note that in golf, being under par is generally better as it means you needed fewer swings to complete the course.

Learn more about Integers here:

https://brainly.com/question/33503847

#SPJ2

I need help quick!
Which of the following algebraic expressions does NOT represent the word phrase, "a number times 5"?
A. k x 5
B. k5
C. 5 x k
D. 5k

Answers

This one is tricky....but I'll go for D cause your multiplying a number towards 5



solve a
a-20=b
a=



plzz help

Answers

In order to have the variable by itself you have to add 20 to both sides. So your answer would be a=b+20. I hope this helps love! :)

352 divided by 4 please answer I'm literally bad at division

Answers

88............................

88 is the answer  352 divided by 4

Find −115+(−35) Write your answer as a fraction in simplest form.

Answers

Final answer:

To find -115 + (-35), simply add the two numbers as if they were positive, then add a negative sign, resulting in -150. It can be written as a fraction in simplest form as -150/1.

Explanation:

The operation in this question is addition. You are adding two negative numbers.

To add two negative numbers, simply add the numbers as though they were positive, then add a negative sign to the result. So, in this case, you would add 115 and 35 to get 150, then add a negative sign to your answer, resulting in -150.

This can be written as a fraction in simplest form as -150/1. It's also important to note that any number over 1 is simply the number itself, so -150/1 is essentially just -150.

Learn more about Adding negative numbers here:

https://brainly.com/question/4342726

#SPJ2

To solve the expression −115 + (−35), combine the numbers to get −150. The answer in simplest fractional form is −150/1.

Solving the Expression: −115+(−35)

To solve the expression −115 + (−35), follow these steps:

Understand that adding a negative number is the same as subtracting that number: −115 + (−35) = −115 − 35.Combine the numbers: −115 − 35 = −150.Write the answer as a fraction in simplest form. Since −150 is an integer, it can be represented as −150/1.

The final answer is −150/1.

Susan claims: If a family has already got four boys, then the next baby is more likely to be a girl than a boy. Is she correct? Explain your answer fully.

Answers

no its 50/50 because the male sperm cell decideds

No. The probability of having a girl or a boy will always be 1/2 for either outcome, regardless of how many boys or girls they've had before

express 24 + 64 as a product of the GCF and another sum

Answers

8(3+8)
24= 2x2x2x3
64= 2x2x2x2x2x2
GCF=8
8x3 + 8x8 = 24+64 + 88

use the working backword method to find the solution of the equation
4y-1=7

Answers

You'd do plus 1 cause that the backward way then add one to seven also and you'll have 4y=8 then divide 4 to each side so y=2
4y-1=7

Basiclly, you need to add one to the other side and subtract one from the original side so there is just 4y there.

That leaves you with 4y=8

Then divide both sides by four so there is no number by y. 8/4 is 2.
y=2.   

And when you check your answer, 4(2)-1=7
                                                          8-1=7
                                                             7=7
                                                  The answer is true.

londynnorth londynnorth Middle School Mathematics 5+3 pts NEED HELP ASAP BRAINLEIST Solve and graph the absolute value inequality: |4x + 1| ≤ 5.
number line with closed dots on negative 1.5 and 1 with shading going in the opposite directions.

number line with open dots on negative 1.5 and 1 with shading in between.

number line with closed dots on negative 1 and 1 with shading in between.

number line with closed dots on negative 1.5 and 1 with shading in between.

Answers

number line with closed dots on negative 1.5 and 1 with shading in between.

number with closed dots on -1.5 and 1 with shading in between

Round 646,592 to the nearest ten thousand

Answers

the answer is 650,000

You and your friend rent a canoe. The canoe costs 10 dollars per half hour plus 5 dollars per day for each life vest. Life vests are required for each passenger. Canoes can only be rented after 8 a.m and must be returned by 6 p.m. What is the greatest range value for this situation

Answers

the greatest range....the range is ur y value, it will be the total cost...the x is gonna be the number of 1/2 hrs. And the 5 per life vest has to be multiplied by 2 because there is 2 people, making it 10
y = 10x + 10

the greatest range will be when u rent the canoe for the longest.
8 a.m to 6 p.m......thats 10 hrs....20 half hrs...so the greatest range is when u rent the canoe for 20 half hrs.

y = 10(20) + 10
y = 200 + 10
y = 210 <=== the greatest range

125 students have volunteered to be on the prom committee. 2 of those students will be randomly chosen to win free tickets to the prom. How many different ways can the winners be chosen?

Answers

Final answer:

There are 7,750 different ways the two winners can be chosen from the 125 students volunteering for the prom committee, calculated using the combination formula C(n, k) = n! / (k!(n-k)!).

Explanation:

To determine how many different ways the two winners can be chosen from the 125 students, we need to use the concept of combinations, because the order in which we choose the winners doesn't matter. The formula for combinations is given by:

C(n, k) = n! / (k!(n-k)!)

where:

n represents the total number of items,

k represents the number of items to choose.

For this situation:

n = 125 (total students),
k = 2 (winners to choose).

Therefore,

C(125, 2) = 125! / (2!(125-2)!)

= 125! / (2! * 123!)

= 125 * 124 / (2 * 1)

= 7750

So, there are 7,750 different ways the winners can be chosen to win free tickets to the prom.

Please help! Quick!

Problem:

Solve:
5z+7=32

Please SHOW ALL YOUR WORK! (P.S. please show your work clearly, because I will need it for other problems! Thanks!)

Answers

5z+7=32
5z+7-7=32-7
5z/5=25/5
z=5
5z + 7 = 32

1) You have to try to get z by itself, so that means isolating 7 and 5.

5z + 7 = 32
5z - 7   -  7
----------------
5z       = 25

2) Whatever you do to one side, you do to the other. So you subtracted 7 to 7 to isolate 7, and you would subtract 7 to 32 as well. And that will leave you with  5z = 25.

3) Whenever there are a number and a variable next to it, it symbolizes multiplication. (5 x z = 5z) So in order to isolate 5z without taking away your variable, you would have to divide 5 from 5, and also 25.

5z          = 25
__            ___
5                 5
____________
z            =  5

____________________________________________________________
So, the steps are to write the equation out.
Combine any like terms, if there is any. (Ex.  5x + 3 + 52x + 39 {you can combine 5x and 52x because they are like terms, meaning they are alike. Other words are simplifying. (57x) :)}[and you can combine 3 and 39 since they are alike too. (42)])
Then, you add/subtract ON BOTH SIDES!
And after that, you finish it off by multiplying/dividing ON BOTH SIDES.

And how you know if you subtract or add is that if it is positive or negative.
Ex. +5 ( you would subtract in order to get it to zero. So -5)
Ex. -5 ( you would add in order to get is to zero. so +5)

And how you know it's multiplication or division.
Ex. 5x (5 * x = 5x, so you would divide by 5 to get zero, and divide 5 ON BOTH SIDES)
Ex.  \frac{x}{5} [/tex] ( you would have to multiply 5 from top and bottom and ON BOTH SIDES)

I hoped this help with the question, and any other questions your confused about :)
     

Mark is planning a trip to see his grandmother. He will travel for three days. He plans to travel 1,390 miles, and his car gets 25 miles to a gallon of gasoline. He plans to pay $1.99 per gallon of gasoline. How much money should mark budget for gasoline for his trip?

Answers

1,390 ÷ 25 = 55.6
55.6 × 1.99 = 110.644
He should budget $110.7

What 2 partial products would you add to find 513x46?

Answers

The two partial products you would add are 252+378

Hailey has bottles that hold 678 pennies
each. About how many pennies does she
have if she has 6 bottles filled with pennies?

Answers

so, six bottles by 678 pennies:

6*678=6*(600+70+8)=3600+420+48=4020+48=4068

so she has 4068 pennies
one bottle = 678 pennies

6 bottles = x pennies

678 x 6 = amount of pennies in 6 bottles

4068 pennies is your answer

hope this helps

What do I do next?? Plz help?

Btw if u want to be put as brainiest I will

Answers

I don't see a photo.
for each color you will have to put a point on the paper where it says , so you will put a green point at(-4,-11) , a purple one at (-8,4), a yellow one at (-1,-1) because it just says -x and -y, a blur one at (-1,1),an orange one at (1.5,1.5) and for that one you just go in the middle between lines one and two, an you will put a pink one at (1,-1).

Other Questions
What document does colonel crafts, an army officer, read to a crowd assembled in front of the Boston state house? Why did intellectuals believe the formation of the united states carried out enlightenment thought? You and two friends pay $40 for tickets.The cost was divided 3 ways in the ratio1 : 3 : 6. How much did each person pay? please help ASAP Read the balance and use this data to determine the density of a sample. The sample displaced 65.6 mL of water. mass = g density = g/cm3 Create a static method called findlargest, which takes an array of integers as an input parameter and returns the array index of the largest integer in the array. if there are positions that are tied for largest, the method should return the first index with a largest value. During both the vernal and _____________ equinox, there is an equal amount of night & day. A) summer B) autumnal C) winter D) vernal What activity is the best example of the mastery hypothesis? A.a Royal Ballet dancer learning a new dance move B.an Olympic gymnast learning to play tennis C.a World Cup soccer player practicing kicking D.a Wimbledon tennis player practicing backhand swings How do you solve -5+-3? What could you do to determine whether the outliers in model 2 are authentic measurements? What role does heat have in plate tectonics?Question 4 options:It thins out oceanic crustIt causes gas to escape the core of the earthIt causes volcanic eruptionsIt moves crust plates around Twice the difference of a number and 5 is 2.Use the variable W for the unknown number What is 1507 million in standard form? Why is measuring blood glucose levels an indicator of someone's lactase activity Why do you suppose jefferson felt that it was not only the right but also the duty of a people to overthrow a despotic government? Suppose americans decide to save less of their incomes, reducing the ability of banks to lend to businesses. with less funds available to businesses, workers will haveless capital equipment with which to work. this leads toslower growth in productivity. The values of the expressions 2m-13 and m+3 are equal? Examining the process of socialization in societies reveals that one of the most distinctive features of human beings, compared with other animals, is Which would early civilizations most likely have cooperated about? select all that apply? I know you finished reading his book, which is about Jamestown.Which pronoun is a third-person personal pronoun? The student is told that one of the four solids tested is actually barium chloride ,bacl2. which of the solids could be bacl2? Steam Workshop Downloader