If a couple plans to have 9 children, what is the probability that there will be at least one girl? assume boys and girls are equally likely. is that probability high enough for the couple to be very confident that they will get at least one girl in 9 children?

Answers

Answer 1

Second question: maybe but nothing is certain when you're talking about anything between men and women. This is not part of the answer. It's just an observation.

Figure this question out first as though you don't get any females. They are all males. The total number of ways that you can distribute 9 children by gender is 2^9 = 512
There is only one way that you can get all males and that is M M M M M M M M M so the chances are 1 chance in 512 or 1/512
All males = 0.001953

So the chances of there being at least 1 female is
1 - 1/512 = 0.998

Which contrary to my opening remark is almost certainty.

Related Questions

what is the solution to -9×<63

Answers

Hey there! :D

I'm assuming that the multiplication sign is x.

When you are multiply something by x, you divide -9 on both sides. When you divide a negative number in an equality, you switch the signs.

x>-7 <== solution

I hope this helps!
~kaikers

△ABC is reflected to form △A′B′C′ . The vertices of △ABC are A(3, 1) , B(1, 5) , and C(6, 9) . The vertices of △A′B′C′ are A′(−1, −3) , B′(−5, −1) , and C′(−9, −6) . Which reflection results in the transformation of △ABC to △A′B′C′ ?

Answers

The reflection of the triangle across y = -x is the new triangle.

Answer:

that would be a reflection across the y axis resulting in a -x

Step-by-step explanation:

The sum between two numbers is 170 and their difference is 110, what is the larger of the two numbers

Answers

x + y = 170
x - y = 110 Add these two equations.
2x = 280 Divide by 2
x = 280/2
x = 140

Patrick ate 2/3 of a fruit bar write an equivalent fraction for the amount of fruit bar Patrick ate

Answers

To get an equivalent fraction, multiply the fraction by a whole number. For example, you can do 2/3 times 2 to both sides which is 4/6.

which is equivalent to (9y2 – 4x)(9y2 + 4x), and what type of special product is it?
81y4 – 16x2, a perfect square trinomial
81y4 – 16x2, the difference of squares
81y4 – 72xy2 – 16x2, a perfect square trinomial
81y4 – 72xy2 – 16x2, the difference of squares

Answers

81y4 -16x, the difference of squares.

Final answer:

The expression (9y2 – 4x)(9y2 + 4x) is equivalent to 81y4 – 16x2, a difference of squares in mathematical terms.

Explanation:

The expression you are asking about is equivalent to

81y4 – 16x2

, which is a special product known as

the difference of squares

. In mathematics, a difference of squares is a term that describes an expression of the form a^2 - b^2. It can be factored into the multiplication of two binomials: (a+b)(a-b). In your example, (9y2)^2 is 81y4 and (-2x)^2 is 16x2, so the final expression is 81y4 – 16x2.

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Solve 2x2 + x − 4 = 0. x2 + x + = 0

Answers

Answer:

1/2 and -2 are the first answers to the question

1/16 and 1/16 are the next answers

1/4 and 33/16 are the last ones

and for the multiple choice answer which is last is A

Step-by-step explanation:

Final answer:

To solve the quadratic equation 2x^2 + x - 4 = 0, we can use the quadratic formula: x = (-b ± √(b^2 - 4ac)) / (2a). Substituting the given values into the formula, we find two solutions: x = (-1 ± √33) / 4.

Explanation:

To solve the equation 2x2 + x - 4 = 0, we can use the quadratic formula. The quadratic formula states that for an equation of the form ax2 + bx + c = 0, the solutions for x can be found using the formula:

x = (-b ± √(b2 - 4ac)) / (2a)

For our equation, a = 2, b = 1, and c = -4. Substituting these values into the formula, we have:

x = (-1 ± √(1 - 4(2)(-4))) / (2(2))

Simplifying further, we get two solutions: x = (-1 ± √33) / 4.

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HELP ME PLEASE! How is the graph of mc027-1.jpg related to its parent function, mc027-2.jpg?

Answers

We will try to approach it generally. If we have a function y=f(x) and we have then y=f(2x), then the graph of the function will be horizontally compressed. If we take f(x/2), the graph of the function will be dilated. (To get horizontal shifts, we need f(x+a), which is not the case here; for example [tex] \sqrt{x+4} [/tex] is horizontally shifted relative to its parent function). If we consider -y=f(x), then the graph of this new function is the graph of the parent function flipped along the x-axis. If we consider y=f(-x) (which is the case here, since [tex] \sqrt{-x} = \sqrt{(-x)} [/tex]) we have that the graph of the new function is the same as the old graph, just flipped along the y-axis. Each of those transformations is independent; combining our observations we see that the last answer is the correct one.

The graph of [tex]y = \sqrt{-2x[/tex] relates to its parent function as a result of (d) horizontal compression by a factor of 2, and a reflection across the y-axis

What is a function transformation?

A function transformation involves changing the form or equation of a function to another through reflection, dilation, translation or rotation

How to determine the function transformation

The parent function is given as:

[tex]y = \sqrt x[/tex]

Compress the function horizontally by a factor of 2, using the following rule

[tex](x,y) \to (2x,y)[/tex]

So, we have:

[tex]y = \sqrt {2x[/tex]

Next, reflect the function over the y-axis, using the following rule

[tex](x,y) \to (-x,y)[/tex]

So, we have:

[tex]y = \sqrt {-2x[/tex]

Hence, the function transformation is (d)

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The perimeter of a is 35.54 inches longer than the perimeter of a square of side 6.75 Find the perimeter of the rectangle to the nearest inches. tenth of an inch

Answers

You can do this just reread it or asked a teacher about. Sorry i can’t help you because I am not confident in my answer.

Perimeter of square: 6.75 x 4 = 27 inches
Perimeter of rectangle: 27 + 35.54 = 62.54 inches

Identify the type of correlation shown in the scatter plot
A. Positive Correlation
B. Negative Correlation
C. No correlation.

Answers

I think it is no correlation because we can't exactly draw a line through this scatter plot

a kittens heartbeat can be as fast as 240 beats per minute . to find the number of times a kittens heart beats in 30 seconds , Aiden says divide 240 ny 30 . do you agree with him why or why not

Answers

I do not agree. If you divide 240 by 30, it would be 8 heartbeats, which is absurd. It's impossible for something to survive with 8 heartbeats per 30 seconds.
In order to get the CORRECT answer, divide 240 by 60 seconds.
This would give you 4 heartbeats per second.
Then, multiply it by 30 seconds, which would give you 120 heartbeats.

CORRECT answer: 120

how to solve -2x+y=7, 3y=6x+4

Answers

Consider, pls, this option.
To the additional, see the attached graph for this system.

Do you know the answer???????? Help!!!!!

Answers

To find the area of the shaded region we need to divide it into one triangle and two rectangles like you can see in the picture.
The area of a triangle is [tex]A _{t} = \frac{1}{2} (base)(height)[/tex], and we know from our figure that our triangle has base=10 feet and height=5 feet, so:
[tex]A_{t} = \frac{1}{2} (10feet)(5feet)[/tex]
[tex]A_{t} = 25feet^{2} [/tex]
The area of a rectangle is [tex]A_{r} =(length)(width)[/tex]. We have tow rectangles in our figure, so for our first one:
[tex]A _{r1} =(10feet)(1feet)[/tex]
[tex]A_{r1}=10feet^{2} [/tex]
for our second one:
[tex]A_{r2} =(8feet)(2feet)[/tex]
[tex]A_{r2} =16feet^{2} [/tex]

Now that we have the areas of all out figures, lets add them to find the area of the shaded region:
[tex]A _{total} =25feet^{2} +10feet^{2} +16feet^{2} [/tex]
[tex]A _{total} =51feet^{2} [/tex]

We can conclude that the area of the shaded region is 51 square feet.

A triangle has side lengths of 8 inches, 12 inches, and 16 inches Determine whether this is a right triangle

Answers

Answer:

No, because 8^2+12^2 doesn't equal 16^2

Step-by-step explanation:

The triangle ABC is not a right angle triangle

What is a Triangle?

A triangle is a plane figure or polygon with three sides and three angles.

A Triangle has three vertices and the sum of the interior angles add up to 180°

Let the Triangle be ΔABC , such that

∠A + ∠B + ∠C = 180°

The area of the triangle = ( 1/2 ) x Length x Base

For a right angle triangle

From the Pythagoras Theorem , The hypotenuse² = base² + height²

if a² + b² = c² , it is a right triangle

if a² + b² < c² , it is an obtuse triangle

if a² + b² > c² , it is an acute triangle

Given data ,

Let the triangle be represented as ΔABC

Now , the measure of sides of the triangle are

The measure of side AB = 8 inches

The measure of side BC = 12 inches

The measure of side AC = 16 inches

Now , For a right angle triangle

From the Pythagoras Theorem , The hypotenuse² = base² + height²

Substituting the values in the equation , we get

AC² = AB² + BC²

16² = 8² + 12²

256 ≠ 64 + 144

256 ≠ 208

Therefore , it does not satisfy Pythagoras relation

Hence , the triangle is not a right angle triangle

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What is the solution to 2log9(x)=log^9(8)+log9(x-2)

Answers

2log9(x)=log^9(8)+log9(x-2)

Log₉x² = log₉8 + log₉(x-2)

Log₉x² = log₉(8×(x-2))

Log₉x² = log₉8x-16

Log₉x² - log₉8x-16 = 0

Log₉(x²/(8x-16)) = 0

x²/(8x-16) = 9°

x² = 1 × 8x-16

x²-8x+16 = 0

x²-4x-4x+16 = 0

x(x-4)-4(x-4) = 0

(x-4)(x-4) =0

Therefore x = 4.....

Answer:

C. x=4

Step-by-step explanation:

Which statement best compares -1/2 and -2 1/2

Answers

From the Iready New York CCLS Question 18, The answer is B. If you count the spaces between -1 1/2 and -2 1/2 you get -2.

The Comparison between -1/2 and -2 1/2 is -1/2 is -2 more than -5/2.

What are fraction?

The fractional bar is a horizontal bar that divides the numerator and denominator of every fraction into these two halves.

The number of parts into which the whole has been divided is shown by the denominator. It is positioned in the fraction's lower portion, below the fractional bar.How many sections of the fraction are displayed or chosen is shown in the numerator. It is positioned above the fractional bar in the upper portion of the fraction.

Given:

-1/2 and -2 1/2

So, -1/2 and -5/2.

So, the quantity -1/2 > -5/2

Also, -1/2 is -2 more than -5/2.

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Tara is taller than Jeff. Jeff is 47 inches tall. Write an inequality that compares Tara's height in inches, t, to Jeff's height

Answers

Answer:

t > 47

Step-by-step explanation:

Tara is taller than Jeff. Jeff is 47 inches tall.

We need to write an inequality that compares Tara's height to Jeff's height

Let t be the height of Tara

and j be the height of Jeff

Tara is taller than Jeff, we use greater than symbol for taller

So inequality becomes t > j

Given Jeff is 47 inches tall, so replace 'j' with 47

Answer is t > 47

Final answer:

To compare Tara's height to Jeff's, the inequality used is t > 47, indicating Tara is taller than Jeff.

Explanation:

The question asks you to write an inequality that compares Tara's height, represented by t, to Jeff's height, which is 47 inches. To represent that Tara is taller than Jeff using an inequality, you use the 'greater than' symbol (>). Therefore, the correct inequality to show that Tara is taller than Jeff is t > 47. This inequality means that Tara's height in inches is greater than 47 inches.

Which is a disadvantage of withdrawing more money than is available in a checking account?

Answers

One disadvantage is most banks charge an overdraft fee once you take out more money than what is available.

A disadvantage of withdrawing more than you have in your account is you will be charged an overdraft fee.

What is an Overdraft Fee?

An overdraft fee can be described as the fee your bank charges you when you make a withdrawal from your account beyond what you have in it.

An overdraft fee is one of the disadvantages of withdrawing more money than you have in your account..

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Solve 4y - 8 -2y + 5 = 0

Answers

The answer to your problem is 3/2.

what is the square root of 4 multiplied by 16

Answers

it is 32, 2x2 is 4 so 2x16 is 32

the square root of 4 is 2, 2 x 16 is 32.

the answer is 32.

The diameter of the base of a cylinder cookies is 8 inches. The volume of the cookie jar is 160 cubic inches. What is the height of the cookie jar?

Answers

Hello!

To calculate the height of the cookie jar, we must use this formula.

FORMULA FOR HEIGHT:

H = V ÷ 3.14 × r × r

First, let's fine the radius. The radius of a circle is always half of the diameter. This means we must divide the diameter by 2.

r = d ÷ 2

r = 8 ÷ 2

r = 4 inches

The radius is 4 inches. Now, let's use the formula and find that height!

FORMULA:

H = V ÷ 3.14 × r × r

V = 160 cubic inches

Pi = 3.14

r = 4 inches

h = ?

First, square the radius.

160 = (3.14(4 × 4))h

160 = (3.14 (16))h

Now multiply that by pi.

160 = 50.24h

Finally, divide this by the volume:

160 ÷ 50.24 = 3.18 (Repeating Decimal)

Just round the repeating decimal to 3.2

A N S W E R:

The height of the cookie jar is about 3.2 inches.

What is 1/4 as a whole number?

Answers

the answer is 1÷4=0.25

i think the answer is = .25

Rearrange the formula A = P + Prt for t.

Answers

Given that:
A=P+Prt
Solving for t.
Factor out P from the right side of the equation.
A=P(1+rt)
Divide both sides by P.
A/P= 1+rt
Subtract 1 from both sides
A/P-1=rt
Divide both sides by r.
(A/P) / r - 1/r= t
or
t= (A/P) / r - 1/r
t= A/Pr - 1/r
t= (A-P)/r

Answer: t= (A-P)/rP

Divide both side by p+pr . And T should be t= A over p+pr

If f(x)=7+4x and g(x)=1/2x What is the value of (f/g)(5)?

Answers

If im not mistaken the answer is D 270

Answer:

[tex]\bigg(\displaystyle\frac{f}{g}\bigg)(5) = 270[/tex]

Step-by-step explanation:

We are given the following information in the question:

[tex]f(x) = 7 +4x\\\\g(x) = \displaystyle\frac{1}{2x}[/tex]

We have to find the values of [tex]\displaystyle\frac{f}{g}(x)[/tex]

[tex]\bigg(\displaystyle\frac{f}{g}\bigg)(x) = \frac{f(x)}{g(x)} = \frac{7 + 4x}{\frac{1}{2x}} = 2x(7+4x)[/tex]

Putting x = 5, we have:

[tex]\bigg(\displaystyle\frac{f}{g}\bigg)(x) = 2x(7+4x)\\\\\bigg(\displaystyle\frac{f}{g}\bigg)(5) = 2(5)(7+20)=270[/tex]

270 is the required value of [tex]\bigg(\displaystyle\frac{f}{g}\bigg)(5)[/tex].

Find the sum of the geometric series with a1 = -1, r = -2 And a10 = 512

Answers

Assuming you want the sum of the first [tex]n[/tex] terms:

[tex]S_n=a_1+a_2+\cdots+a_{n-1}+a_n[/tex]
[tex]S_n=a_1+ra_1+\cdots+r^{n-2}a_1+r^{n-1}a_1[/tex]
[tex]rS_n=ra_1+r^2a_1+\cdots+r^{n-1}a_1+r^na_1[/tex]

[tex]\implies S_n-rS_n=a_1-r^na_1\iff(1-r)S_n=(1-r^n)a_1\implies S_n=\dfrac{1-r^n}{1-r}a_1[/tex]

You're given that [tex]a_1=-1[/tex] and [tex]r=-2[/tex], so

[tex]S_n=\dfrac{1-(-2)^n}{1-(-2)}(-1)=-\dfrac{1-(-2)^n}3[/tex]

The fact that you're given [tex]a_{10}[/tex] makes me think you're supposed to find [tex]S_{10}[/tex], which is just a matter of setting [tex]n=10[/tex] in the formula above.

[tex]S_{10}=-\dfrac{1-(-2)^{10}}3=-\dfrac{1-1024}3=341[/tex]

Find the sum of the geometric series with a1 = 7, r = 2, And n = 14

Answers

Final answer:

The sum of the geometric series with a1 = 7, r = 2, and n = 14 is -327661.

Explanation:

The question is asking for the sum of a geometric series. In mathematics, the sum (S) of a geometric series is determined using the formula S = a1 * (1 - r^n) / (1 - r), where a1 is the first term, r is the common ratio, and n is the number of terms.

In the provided geometric series, a1 = 7, r = 2, and n = 14. Substituting these values into the formula gives us S = 7 * (1 - 2^14) / (1 - 2). After performing the calculations, the sum of the geometric series is -327661.

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Final answer:

The sum of the first 14 terms of the geometric series with the first term (a1) = 7, common ratio (r) = 2, is 114,691.

Explanation:

Given the first term of the geometric series (a1) = 7, the common ratio (r) = 2, and the number of terms (n) = 14, we would like to find the sum of this series. Using the formula for the sum of a geometric series, S = a1 * (1 - r^n) / (1 - r), substituting the given values, we get:

S = 7 * (1 - 2^14) / (1 - 2)

This simplifies to S = 7 * ( -16383) / -1, which results in S = 114,691. So, the sum of the first 14 terms of this geometric series is 114,691.

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A radar gun used to determine the speed of passing cars must be within 7 mph of the actual speed of a selected car. If a highway patrol officer reads a speed of 59 mph for a car, does he have irrefutable evidence that the car was speeding in a 55 mph zone?

Answers

No. if it has a 7mph range the highest and lowest possible values would be 66mph to 52mph. The radar gun would have to measure 63 to cover the 14mph range for accuracy to claim the person was speeding.

What is the total finance charge for a $4,250 loan at 13.25% interest compounded monthly for 24 months?
a. $25.47
b. $202.55
c. $611.20
d. $4,861.20

Answers

Answer: Option c. $ 611.20 will be correct.

Explanation:

Since, the total amount of finance charge is [tex]A=P\frac{r(1+r)^n}{(1+r)^n-1}[/tex]

Where P is the principle, r is the rate, n is the times of compound interest (monthly or quarterly etc.) .

Here P=$4250 r=13.25%, and n=24.

So according to the formula So, the finance charge= [tex]4250\frac{13.25(1+13.25)^{24}}{(1+13.25)^{24}-1}[/tex] = $ 611.20

The total finance charge for a $4,250 loan at 13.25% interest compounded monthly for 24 months is c) $611.20.

To calculate the total finance charge for a $4,250 loan at 13.25% interest compounded monthly for 24 months, we can use the following formula:

Total finance charge = Principal * (1 + Monthly interest rate)^Number of months - Principal

Where:

Principal is the amount of the loan ($4,250)

Monthly interest rate is the annual interest rate divided by 12 (13.25% / 12 = 1.1042%)

Number of months is the term of the loan in months (24)

Total finance charge = 4250 * (1 + 0.011042)^24 - 4250

Total finance charge = 611.20

Therefore, the answer is c. $611.20.

Note that this formula is for calculating the total finance charge over the entire term of the loan. If you want to calculate the monthly finance charge, you can simply divide the total finance charge by the number of months in the loan term. For example, the monthly finance charge for this loan would be $611.20 / 24 = $25.47.

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In matrix T, what is the value of element t13?

Answers

we know that
in the matrix T the element t(13) refers to the element in row 1 and column 3

therefore
the answer is 7

Answer:

[tex]t_{13} =7[/tex]

Step-by-step explanation:

[tex]t_{13}[/tex] here 1 represents that it is in 1st row whereas 3 represents that it is in 3rd column so the element placed in 1st row and 3rd column is 7

therefore answer is

[tex]t_{13} =7[/tex]

Suppose that with a budget of $100, Deborah spends $60 on sushi and $40 on bagels when sushi costs $2 per piece and bagels cost $2 per bagel. But then, the price of bagels falls to $1 per bagel.

Answers

60 divided by 2 = 30
40 divided by 2 =20
and thats all i got xD

60/2=30
40/2=20
with a new price of that bagel drop is 50%
(40/40+60=80
and 20$ is the money that Deborah income reducing

amy is building a house. the basement floor is at -15 feet. the roof of the house is above the ground 25 feet. write an inequality to compare the heights. explain the meaning of the inequality.

BONUS: what is an inequality.

Answers

An inequation is a mathematical expression that is used to make constraints given a problem.
For example, this is a problem of heights.
There is a minimum height and a maximum height.
We can use the following inequation to describe the problem:
Let
x = height in feet.
The inequation is:
-15 <= x <= 25
answer:
-15 <= x <= 25

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If a couple plans to have 9 ​children, what is the probability that there will be at least one girl​? assume boys and girls are equally likely. is that probability high enough for the couple to be very confident that they will get at least one girl in 9 ​children?

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If a couple plans to have 9 children, what is the probability that there will be at least one girl? assume boys and girls are equally likely. is that probability high enough for the couple to be very confident that they will get at least one girl in 9 children?