Assume the probability is 1/2 that a child born at any time is a boy and births are independent. What is the probability of the event that if a family has 4 children, they are all boys? Please help!!!!!!!!! :(

Answers

Answer 1

There are only 23=823=8 possible ways to arrange the genders boy/girl, with repetition. Since the probability of boy and girl are equal, the probability of each of these arrangements are also equal. We can therefore count the number of possible "good" answers, and divide by 8.

There are 3 possible ways to have 1 boy, that being "first/second/third child is boy", so the probability of exactly 1 boy is indeed 3838.

Having at most 2 girls is the opposite of having three girls, so since there are only one way of having three girls, there must be 8−1=78−1=7 ways of having at most two girls, so the probability of at most two girls is indeed 78


Related Questions

Which is true about the polynomial –8m3 + 11m?

It is a trinomial with a degree of 3.
It is a trinomial with a degree of 3.

It is a trinomial with a degree of 2.
It is a trinomial with a degree of 2.

It is a binomial with a degree of 3.
It is a binomial with a degree of 3.

It is a binomial with a degree of 2.

Answers

Answer:

Binomial with a degree of 3

Step-by-step explanation:

-8m^3 + 11m....notice that it has 2 terms....(-8m^3) and (11m). Having 2 terms makes it a binomial...if it would have had 3 terms, it would have been a trinomial. If it has only one variable, the degree is the highest exponent...so this has a degree of 3 since ^3 is the highest exponent.

so the answer is : binomial with a degree of 3

The correct answer is: "It is a binomial with a degree of 3."

What is a polynomial?

Polynomial is an equation written with terms of the form kx^n.

where k and n are positive integers.

There are quadratic polynomials and cubic polynomials.

Example:

2x³ + 4x² + 4x + 9 is a cubic polynomial.

4x² + 7x + 8 is a quadratic polynomial.

We have,

The polynomial -8m³ + 11m is a binomial with a degree of 3.

A polynomial is an expression consisting of variables and coefficients, where the variables are raised to non-negative integer powers and the coefficients are constants.

The degree of a polynomial is the highest power of the variable in the polynomial.

In this case,

The polynomial has two terms, or it is a binomial.

The highest power of "m" in the polynomial is 3, which means that the degree of the polynomial is 3.

Therefore,

The correct answer is: "It is a binomial with a degree of 3."

Learn more about polynomials here:

https://brainly.com/question/2284746

#SPJ7

4. The price of a sweater is $5 less than the price of the shirt. If four sweaters and
three shirts cost $200, find the cost of each shirt and sweater.

Answers

Answer:

Form an equation:

let x be the price of a shirt

Then, the price of a sweater would be x - 5

So you would have:

4(x - 5) + 3x = 200

simplify

4x - 20 + 3x = 200

7x - 20 = 200

add 20 to both sides

7x = 220

divide both sides by 7

x = about 31.43

That means the cost of the sweater would be 31.43 - 5 = 26.43

Let ​f(x)=x2 and ​g(x)=x−6. Find ​(f◦​g)(−1​).

Answers

Answer:

(f◦​g)(−1​) = -14

Step-by-step explanation:

First solve for g(x). g(x) = -1 - 6 = -7. Then plug -7 into f(x). f(x) = (-7)(2) = -14

g = cst (solve for s)

Answers

Step-by-step explanation:

Simplifying

g = cst

Solving

g = cst

Solving for variable 'g'.

Move all terms containing g to the left, all other terms to the right.

Simplifying

g = cst

Subtract 2x^2+ 6x - 5 from 7x^2+ 3x + 4.

Answers

Answer:

− 5[tex]x^{2}[/tex] + 13x −6

By subtracting "[tex]2x^2+ 6x - 5[/tex]" from "[tex]7x^2+ 3x + 4[/tex]" we get "[tex]5x^2-3x+9[/tex]". A further solution is below.

Given equations are:

→  [tex]2x^2+6x-5[/tex]...(equation 1)

→  [tex]7x^2+3x+4[/tex]...(equation 2)

By subtracting "equation 1" from "equation 2", we get

→ [tex](7x^2+ 3x + 4)-( 2x^2+ 6x - 5)[/tex]

→ [tex]7x^2+3x+4-2x^2-6x+5[/tex]

→ [tex]5x^2-3x+9[/tex]

Thus the above solution is the appropriate one.

Learn more about subtraction here:

https://brainly.com/question/2346316

what is laugh???????​

Answers

Answer:

Nevetni

Step-by-step explanation:

It meaning hungary : nevetni

Answer:

Expression of people when they are happy

Step-by-step explanation:

Hope it help

Mark brainliest

Thanks

Which point would you get when (3,-4) is reflected over the y axis?
O (-3, 4)
O (3, 4)
O (-3,-4)
O (3.-4)

Answers

I think it is the first one because when you reflect need to change the signs.


Answer: (-3,4)
Ans(-3,4)
It is correct and re check and mark as brainliest

divided 2) Ellie made $253 for 22 hours of work. She makes $11 per hour so Identify the error:​

Answers

Answer:

Ellie should have made 253$ in 23 hours in time. If she worked for 22 hours, then she made 242$.

Step-by-step explanation:

253$ / 11$= 23 hours

22 hours X 11$= 242 hours

PLEASE HURRY‼️‼️‼️
A Lime bike charges $2 for
a flat fee plus $0.50 a
minute. A different bike
charges $3.80 for a flat
fee plus $0.20 a minute.
After how many minutes
(x), will the price (y) be
the same for both bikes?

Answers

Answer:

5 minutes

Explanation:

.5x + 2 = y

.2x + 3.8 = y

.5x + 2 = .2x + 3.8

-.2x         -.2x          

.3x + 2 = 3.8

      -2      -2          

.3x = 1.8

.3     .3

x = 5

After 5 minutes, both bikes will be at the same price.

I dont understand this at all, I need the right anwser and Explanation please.

Answers

Answer:

a = 7; b = ⁷/2

Step-by-step explanation:

Recall the acronym, SOHCAHTOA

We would apply trigonometric ratio formula in finding a and b.

Reference angle [tex] (\theta) [/tex] = 60°

Opposite side to the reference angle = [tex] \frac{7\sqrt{3}}{2} [/tex]

Adjacent side = b

Hypotenuse = a

✔️To find a, we would apply SOH, which is:

[tex] sin (\theta) = \frac{opp}{hyp} [/tex]

Plug in the values

[tex] sin (60) = \frac{\frac{7\sqrt{3}{2}}{a} [/tex]

[tex] \frac{\sqrt{3}}{2} = \frac{\frac{7\sqrt{3}{2}}{a} [/tex] (sin 60 = √3/2)

[tex] \frac{\sqrt{3}}{2} = \frac{7\sqrt{3}{2}*\frac{1}{a} [/tex]

[tex] \frac{\sqrt{3}}{2} = \frac{7\sqrt{3}{2a} [/tex]

Cross multiply

[tex] \sqrt{3}*2a = 7\sqrt{3}*2 [/tex]

[tex] 2a\sqrt{3} = 14\sqrt{3} [/tex]

Side both sides by √3

[tex] 2a = 14 [/tex]

Divide both sides by 2

a = 14/2

a = 7

✔️To find b, apply TOA, which is:

[tex] tan (\theta) = \frac{opp}{adj} [/tex]

Plug in the values

[tex] tan (60) = \frac{\frac{7\sqrt{3}{2}}{b} [/tex]

[tex] \sqrt{3} = \frac{\frac{7\sqrt{3}{2}}{b} [/tex] (tan 60 = √3)

[tex] \sqrt{3} = \frac{7\sqrt{3}{2}*\frac{1}{a} [/tex]

[tex] \sqrt{3} = \frac{7\sqrt{3}{2b} [/tex]

Cross multiply

[tex] \sqrt{3}*2b = 7\sqrt{3} [/tex]

[tex] 2b\sqrt{3} = 7\sqrt{3} [/tex]

Divide both sides by √3

[tex] 2b = 7 [/tex]

Divide both sides by 2

b = 7/2

50 percent of blank is 30

Answers

60 hope it helps!!!!!!!!!

Answer:

50%of balnk is 30

the blank is 15 because

50x30/100 gives you what you don't have

so 50x30/100=15

The blank would be 15

Step-by-step explanation:

Mia used 1/7 of an ounce of nuts to make 1/5 of a cake. How many ounces of nuts are needed to make a whole cake?

Answers

Answer:

For this case we can apply the following proportional rule:

Step-by-step explanation:

1/7 nuts. x

------------ = ----------

1/5 cake. cake

and solving for x we got:

x = 1/7

------- = 5/7 nuts

1/5

then the answer for this case would be 5/7 nuts

your welcome

The slope of a line is 1, and the y-intercept is -1. What is the equation of the line written in slope-intercept form?

Answers

Answer:

Step-by-step explanation:

slope (m) = 1

y-intercept (c) = - 1

Writing in slope intercept form

y = mx + c

y =  x - 1

hope it helps :)

HELP PLSSSSSS!!! answer all pls

Answers

Answer:

See below.

Step-by-step explanation:

STEP 1:  If you write the given terms all with denominators of 16, they are 28/16, 25/16, 22/16, 19/16, __, ____, ____, 7/16, 4/16.

STEP 2: The terms decrease by 3/16 for each step.

RULE: Term 1 = 7/4 and term (n + 1) = term 'n' - 3/16

The operation for increasing by the same amount every step is addition.

The operation for decreasing by the same amount every step is subtraction.

STEP 3: The rule is that the terms decrease by 3/16 at each step.

So the next 3 terms after 19/16 will be 16/16, 13/16, and 10/16.

Reformat them and you have 1, 13/16, 5/8.

So now the completed sequence is 1&3/4, 1&9/16, 1&3/8, 1&3/16, 1, 13/16, 5/8, 7/16, 1/4.

What is 2074 as a percent?

Answers

Answer:

207400%

Step-by-step explanation:

Look at the decimal number 2074 as 2074 out of one. Furthermore, percent means per hundred. So the task is to convert 2074 out of one to 2074 out of one hundred.

The equation to solve the problem is displayed below where x is the 2074 as a percentage.

   

2074

/1

   =  

x

/100

 

Please mark brainliest if correct and have a blessed day!

   

We solve the equation for x above by first multiplying each side by one and then multiplying each side by one hundred. Thus, the answer to 2074 as a percentage is:

207400%

Answer:

the answer is 207400% I do believe

Find the value of cos(2.78°) to the nearest hundredth.

Answers

Answer:

cos 2.78 = 1

Step-by-step explanation:

Help. I need to take sticky tack off my shoe. What do I do?

Answers

Answer:

Got any Brillo Pads? If not, I suggest scrubbing hard with an abrasive sponge and dish soap, preferably Dawn. WHAT DID YOU DOOO? lol

Step-by-step explanation:

Answer:

hot water and use a butter knife and dig it off

Step-by-step explanation:

get really hot water pour it on the bottom of ur shoe and use the knife to dig it off

hope this works it works for me

have a great day :)

also use dish soap

how many solutions does the following system of equations have y=2x+2 & 2y=4x+4

Answers

Step-by-step explanation:

The answer is : Infinitely many solutions (because they lie in each other)

What is the discriminant of this equation?
3x2 + 8x = 0

Answers

If the 2 is an exponent, it should be marked as such.
“3x2” means 3x⋅2
“3x^2” means 3x²

3x²+8x = 0
Discriminant = 8²-4(3)(0) = 64

Multiply the following polynomials and write your final answer in standard form (x+3) (x^2-2x-1)

Answers

Answer:

The answer is 4x^2-8x-2

Step-by-step explanation:

Distribute 3 to all the numbers on the other parenthesis and the answer would be: 3x^2-6x-3

Now distribute x to that same parenthesis which would be like distributing one so it will be kept the same: x^2-2x-1

Now combine like terms:

3x^2-6x-3

x^2-2x-1

= 4x^2-8x-2

(hope this helps, sorry if I'm wrong)

A line that includes the point (10, 0) has a slope of
5
What is its equation in slope-intercept
form?
Write your answer using integers, proper fractions, and improper fractions in simplest form.
Submit
I need helppppppp !!!!!!! Due in 5 mins

Answers

9514 1404 393

Answer:

  y = 1/5x -2

Step-by-step explanation:

When a point and slope are given, sometimes it is easiest to start with the point-slope form of the equation. Then it can be rearranged to the desired form.

  y -k = m(x -h) . . . . . line with slope m through point (h, k)

  y -0 = 1/5(x -10) . . . . . line with slope 1/5 through point (10, 0)

  y = 1/5x -2 . . . . . . . eliminate parentheses to get slope-intercept form

_____

Note that the slope in the attached picture is 1/5, but your problem text says it is 5. Very different equations will result from these different slopes.

There are two routes Lucas can take to walk to school. Route A is 2 and StartFraction 1 over 8 EndFraction miles and is StartFraction 3 over 8 EndFraction mile longer than route B. The equation b + StartFraction 3 over 8 EndFraction = 2 and StartFraction 1 over 8 EndFraction can be used to represent this situation, where b is the length of route B. How many miles will Lucas walk if he takes route B?
1 and one-half miles
1 and three-fourths miles
2 and one-fourthmiles
2 and one-half miles

Answers

Answer:

I know im late, but it would be B!

Answer:

If Lucas walks through route B, the length of route B is 1 and 3/4 miles. Then the correct option is B.

What is Algebra?The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

There are two routes Lucas can take to walk to school.

Route A is 2 and 1/8 miles, and Route A is 3/8 mile longer than route B. The equation b + 3/8 = 2 + 1/8  can be used to represent this situation, where b is the length of route B.

rep viuen
Write two numbers that multiply to the value on top and add to the value on bottom.
-32
4

Answers

Answer:

8 and -4

Step-by-step explanation:

8*-4=-32

8+(-4)=4

OMG PLS— THIS IS DUE AT 8PM—

Answers

Answer:

so good

Step-by-step explanation:

so good

2. A new car depreciates as soon as you drive it out of the parking lot. A certain car depreciates to half its original value in 4 years. If you bought a car 8 years ago and it is now worth $5,000, how much did you pay for the car originally? *

Answers

Answer:

Step-by-step explanation:

Mary ordered dinner for 10 people.Three people ordered the 4.75 chicken dinner, two people ordered the 4.95 fish dinner and five had beef dinner at cost of 6.75 each. What was the average cost of each dinner at Mary's party

Answers

Answer: 5.79

Step-by-step explanation:

From the question,

3 people ordered the 4.75 chicken dinner. The cost will be:

= 4.75 × 3

= 14.25

2 people ordered the 4.95 fish dinner. The cost will be:

= 4.95 × 2

= 9.9

5 had beef dinner at cost of 6.75 each. This cost will be:

= 6.75 × 5

= 33.75

Total cost will be:

= 14.25 + 9.9 + 33.75

= 57.9

Therefore, the average cost of each dinner at Mary's party will be:

= Total cost / Number or people

= 57.9 / 10

= 5.79

3) Sarah has $350 in her bank account on Monday. On Tuesday, she deposits (puts
into the bank) $50. On Tuesday, she withdraws (takes out of the bank) $500. What
is her final balance (amount in the bank)?

Answers

Answer:

hello im sam and im going to help you answer your question.

Step-by-step explanation:

you to 350 and add 50 and you get 400

now you take 500 out and now u are in debt of -100$

if your monthly salary is $2,543, what is your annual salary

Answers

multiply your monthly by 12
2543 x 12 = 30,516

Which statement completes step 6 of the proof?


Coordinate plane with line f at y equals 3 times x plus 1 and line g at y equals negative one third times x plus 1. Triangle JKL is at J negative 1 comma negative 2, K 0 comma 1, and L 0 comma negative 2. Triangle J prime K L prime is at J prime negative 3 comma 2, K 0 comma 1, and L prime negative 3 comma 1.



Step 1 segment KL is parallel to the y-axis, and segment JL is parallel to the x-axis.

Step 2 ΔJKL was rotated 90° clockwise to create ΔJ'KL'. Point K did not change position, so it remains point K. Therefore, ΔJKL ≅ ΔJ'KL'.

Step 3 segment K L prime is perpendicular to the y-axis, and segment J prime L prime is perpendicular to the x-axis.

Step 4 segment JK lies on line f and has a slope of 3.

Step 5 segment J prime K lies on line g and has a slope of negative one third.

Step 6 ?

A. The product of the slopes of segment JK and segment J prime K is −1; therefore, lines f and g are perpendicular.

B. The slopes of segment JK and segment J prime K are congruent; therefore, lines f and g are parallel.

C. The product of the slopes of segment KL and segment K L prime is −1; therefore, lines f and g are perpendicular.

D. The slopes of segment KL and segment K L prime are congruent; therefore, lines f and g are parallel.

Answers

Answer:

a) the product of slopes of segment jk and segment j prime k is -1 therefore line f and g are perpendicular

Answer:

The product of the slopes of segment JK and segment J prime K is −1; therefore, lines f and g are perpendicular.

Step-by-step explanation:

Just took the test and its correct!! :)

4х — Зу = - 16 х+ бу = 25 ​

Answers

What’s your question about you doing ok with

Answer:

you cannot answer

Step-by-step explanation:

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