In Mr. Smith's 7th Hour
class there are 16 boys and
7 girls. What is the
probability of randomly
selecting a boy?

Answers

Answer 1

binomial(16 + 7, 16) 2^(-(16 + 7)) = ((16 + 7)!)/(16! 7! 2^(16 + 7)) = 245157/8388608 ≈ 0.02922 ≈ 1/34.22

(assuming children are independent and male and female are equally likely)

| probability

less than 16 boys | 0.9534

16 or less boys | 0.9827

more than 16 boys | 0.01734

16 or more boys | 0.04657

fraction of boys | 16/(16 + 7) ≈ 0.695652

fraction of girls | 7/(16 + 7) ≈ 0.304348

expected value | 11.5

standard deviation | 2.398

variance | 5.75

11.5


Related Questions

<1 and <2 are complementary angles. The measure of <1 is 54 degrees. The measure of <2 is 4x degrees. Find the value of x.

Answers

Answer:

9

Step-by-step explanation:

Complementary means they add up to 90 degrees.

54 + 4x = 90

4x = 36

x = 9

The manager of an ice cream shop is considering which ice cream flavor to offer as the special flavor next month. She asks 175 people whether they like mint or strawberry ice cream. The results are in the table below. The manager wants to increase sales, so she is deciding whether to offer mint or strawberry ice cream.

Answers

Answer:

strawberry-49%-51%

Step-by-step explanation:

The manager should offer strawberry ice

cream because 49% of the

customers surveyed like mint and 51%  of the customers like strawberry

I'm going to cry please explain if ur good at math
A triangular prism has a height of 5m, a length of 204cm, and a height of 1293 mm. Find its volume.
The answer is 1 x 10^something i can't really see what it is. Please explain how to do this.

Answers

Answer:

In the triangular prism calculator you can easily find out the volume of that solid. A general formula is volume = length * base_area; the one parameter you always need to have given is the prism length, and there are four ways to calculate the base - triangle area. Our triangular prism calculator has all of them implemented, isn't it awesome?

The specific formulas look as follows:

Length * Triangular base area given triangle base and height

It's this well-known formula mentioned before:

volume = length * 0.5 * b * h

Length * Triangular base area given three sides (SSS)

If you know the lengths of all sides, use the Heron's formula to find the area of triangular base:

volume = length * 0.25 * √( (a + b + c) * (-a + b + c) * (a - b + c) * (a + b - c) )

Length * Triangular base area given two sides and the angle between them (SAS)

You can calculate area of a triangle easily from trigonometry:

volume = length * 0.5 * a * b * sin(γ)

Length * Triangular base area given two angles and a side between them (ASA)

You can calculate that using trigonometry:

volume = = length * a² * sin(β) * sin(γ) / (2 * sin(β + γ))

Step-by-step explanation:

please help to solve the question​

Answers

[tex] \: \: \: \: \: \blue{\underline{\underline{ \large{ \tt{ \red{✧A \: N \: S \: W \: E \: R}}}}}}[/tex]

[tex] \large{ \tt{✽ Step - By - Step \:Explanation}} : [/tex]

[tex] \underline{ \underline{ \large{ \tt{G \: I\: V \: E \: N}}} }: [/tex]

C.P of two mobile set = Rs 55555Profit % on selling 1 mobile = 10%Loss % on selling another mobile = 10%

[tex] \underline{ \underline{ \large{ \tt{S\: O \: L \:V \:I \: N \: G}} }}....[/tex]

[tex]\begin{array}{ |c| c | } \tt{Case \: I}& \text{Case \: II} \\ \hline \hline \tt{CP = x} &  \tt{ CP = 55555 - x} \\ \tt{Profit\% =10 } & \tt{Loss\% = 10\%} \\\ \tt{SP_{1} = \frac{cp(100 + P\%)}{100} }\\ &  \tt{SP_{2} = \frac{cp(100 - L\%)}{100} }\\ = \tt{\frac{x(100 + 10)}{10} } &  = \tt{\frac{9 \cancel{0}(55555 - x)}{1 \cancel{00}}} \\ \\ = \frac{11}{10} x &  = \tt{\frac{499995 - 9x}{10}} \end{array}

[/tex]

[tex] \underline{ \large{ \tt{According \: To \:Question \: (ATQ)}} }: [/tex]

[tex] \large{ \tt{ SP_{1} = SP_{2}}}[/tex]

⤏ [tex] \large{ \tt{ \frac{11}{10} x = \frac{499995 - 9x}{10}}} [/tex]

⤏ [tex] \large{ \tt{110x = 4999950 - 90x}}[/tex]

⤏ [tex] \tt{110x + 90x = 4999950}[/tex]

⤏ [tex] \large{ \tt{200x = 4999950}}[/tex]

⤏ [tex] \large{ \tt{x = \frac{4999950}{200}}} [/tex]

⤏ [tex] \large{ \tt{x = 24999.97}}[/tex]

[tex] \large{ \tt{Replacing \: Value}} : [/tex]

⤏ [tex] \large{ \tt{ SP = 2( \frac{11}{10 } \times 24999.97) = \underline{Rs \: 54999.934}}} [/tex]

[tex] \large{ \tt{CP = Rs \: 55555}}[/tex]

Since SP < CP , he / she made a loss

[tex] \large{ \tt{Loss\% = \frac{CP- SP}{CP} \times 100\% }}[/tex]

⟶ [tex] \large \tt \: \frac{55555 - 54999.934}{55555} \times 100\%[/tex]

⟶ [tex] \large{ \tt{0.99\%}}[/tex]

⟶[tex] \boxed{ \large{ \tt{1\%}}}[/tex]

Hence , Loss percent = 1%

Hope I helped ! ♕

Have a wonderful day / night ! ツ

✏[tex] \underbrace{ \overbrace{ \mathfrak{Carry \: On \: Learning}}}[/tex] !!

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

Answer:

[tex]\begin{gathered}\begin{array}{ |c| c | } \tt{Case \: I}& \text{Case \: II} \\ \hline \hline \tt{CP = x} & \tt{ CP = 55555 - x} \\ \tt{Profit\% =10 } & \tt{Loss\% = 10\%} \\\ \tt{SP_{1} = \frac{cp(100 + P\%)}{100} }\\ & \tt{SP_{2} = \frac{cp(100 - L\%)}{100} }\\ = \tt{\frac{x(100 + 10)}{10} } & = \tt{\frac{9 \cancel{0}(55555 - x)}{1 \cancel{00}}} \\ \\ = \frac{11}{10} x & = \tt{\frac{499995 - 9x}{10}} \end{array} \end{gathered} [/tex]

Which of the following expressions is equivalent to (2x)3 ?

Answers

Answer:

No choices, but 3(2x) is simplified to 6x

Step-by-step explanation:

3(2x) = 3 × 2x = 6x

Answer: The expression that is equivalent to (2x)3 is 6

Step-by-step explanation: The answer is 6 because x is equal to 3 so 3*2=6

Write the number and the nature of the roots of the quadratic
equation whose discriminant is 24 – 4(3)(-2).

Answers

Answer:

two unequal real roots

Step-by-step explanation:

35 - 5(4)(-3) simplifies to 35 + 60, or 95.

Because the discriminant is positive, the quadratic has two unequal real roots.

Write the ratio as a fraction in simplest form: 18 minnows to 32 fish

Answers

Answer:

9/16

Step-by-step explanation:

Use the Part = 18, as the numerator and use the Whole = 32, as the denominator. The part-to-whole fraction is 18/32

Meaning:

The Part is 18/32 of the Whole

Reducing the fraction, it is also true that:

The Part = 9/16 of the whole

72 paper clips to 63 paper clips

find the change in percent

Answers

Answer:

The number of paperclips decreased by 12.5%

Step-by-step explanation:

72-63=9

9/72 = .125 or 12.5%

Answer:

Step-by-step explanation:

To get percentage change, we use the formula:

Percentage change =

Here,

the new value is the later value of 63 and the old value is the first value of 72

Plugging in the values in the formula gives us:

Percentage change =

The percent change is 12.5% (we can also say that it is a decrease of 12.5% since negative)

I could use some help! I do not get this at all. Rules: No links please :)

Answers

Answer:

the answer is 310

Step-by-step explanation:

Answer:

310

Step-by-step explanation:

HELP ASAP THIS IS DUE TODAY THANK YOU

Answers

615.75 m jaksjdnkeksjdjdjkd

Answer: 169π

Step-by-step explanation:

Area=πr^2

=π·13^2

=169π

Do these three segments make a right triangle? 14cm, 23cm, and 25cm

Answers

Answer:

This is not a right triangle(No)

Step-by-step explanation:

Answer:

No.

Step-by-step explanation:

If you use Pythagorean Theorem, you can determine whether or not these measurements make a right triangle. The hypotanuse is always the longest side, or c, in this equation.

a^2+b^2=c^2

14^2+23^2=25^2

196+529=625

725=625

Obviously, this set of measurements do not make a right triangle. Hope this helped!

can someone help me find the answer to (8x+4)+(-11x+5)

Answers

Answer:

x = 3

Step-by-step explanation:

(8x + 4) + (- 11x + 5)

= 8x + 4 - 11x + 5

= 8x - 11x + 5 + 4

= - 3x + 9

- 3x + 9 = 0

- 3x = - 9

x = - 9 ÷ - 3

x = 3

•°•°•°•°•°•°•°•°•°•°•°•°•°•

I'm literally about to give up on this

Answers

Answer:

The new shape will be like the one that i have drawn for you , i think .

add two ( to base* from both sides of it * )

delete one ( from hights )

Step-by-step explanation:

Hope it was useful ;)

Help me pls ........................
.............................

Answers

A simple sentence contains one independent clause. A compound sentence contains more than one! Put another way: a simple sentence contains a subject and a predicate, but a compound sentence contains more than one subject and more than one predicate.

Can someone please help me with this thank you

Answers

Answer:

A = 216.314

C = 52.124

Step-by-step explanation:

We know the radius so now we need to know the diameter. So multiple the radius by 2.

R = 8.3

D = 16.6

Let's find the area first

A = 3.14×r²

A = 3.14×68.89

A = 216.314

Now find the circumference

A = 3.14×d

A = 3.14×16.6

A = 52.124

Which of the following tables represents a proportional relationship?

Answers

It will be A. Not B. And the reason why is because A follows the same rule which is multiply by 3. Hope this helps! Mark brainly please!

TRUE
FALSE
1a. You would expect to roll a
4 three times.
TRUE
FALSE
TRUE
FALSE
1b. You would expect to roll an
even number 9 times.
1c. You would expect to roll a
2 or 3 ten times.
1d. The probability of rolling a
5 on one roll is
TRUE
FALSE

Answers

run me my points .

Step-by-step explanation:

find a possible value of b. 5x2 - bx - 8​

Answers

Answer:

Step-by-step explanation:

Without more input from you, it's hard to find an exact value for b.  However, b may take on a large range of values.  b = 10 and b = -3 (chosen arbitrarily) are acceptable choices.

Take a look at the quadratic formula.  The discriminant is b^2 - 4ac.  There is nothing about this equation that restricts or forbids the use of any value of b.

Which expressions are equivalent to
- 77 +(-4.5) +3.52 +3y-1.5?

Select all that apply.
A. Зу -6 -3.5z
B. -6 + 3y +3.52
C. -3.5z + 3y - 6
D. 16 + 3y +(-3.52)
E. 3y +(-3.5z) - 4.5

Answers

Answer:

[tex]\color{Blue}\huge\boxed{Answer} [/tex]

D. 16 + 3y +(-3.52)

what is the negative x-intercept of y=x^2-2x-3 PLEASE HELP!!​

Answers

Answer:

(-1,0)

Step-by-step explanation:

HELpPp asap I’ll mark you as brainlister

Answers

Answer:

40

Step-by-step explanation:

If you do 11 times 4 you get 44 and then you round

Please help me with this its due in 30 mins

Answers

Answer:

m/1   <   m/6

m/3 + m/5 < m/7 + m/8

Step-by-step explanation:

hope this helped!

Write the expression 14(x+8) one other way.

Answers

14x+112
Distributive property

Hii! Is this proportional or not?

Answers

Answer:

Yes, the Y value has a direct relationship with the x value.

y = 5x + 5

Step-by-step explanation:

Is the dilation an enlargement or a reduction base on the picture attached ?how can u tell ?
NEED HELP ASAP !

Answers

Answer:

Reduction

Step-by-step explanation:

Whenever you see a shape graphed where the points have ' after the letter, then that is the RESULT. So, the yellow parallelogram ABCD is the original, and the blue parallelogram A'B'C'D' is the result, which is obviously smaller than the original. So that means that it's a reduction.

I hope this made sense and helped! :)

Answer:

Step-by-step explanation:

The yellow rectangle is an enlargement of the blue one, and is a positive dilation.  The blue rectangle is shrunken from the yellow one and is a negative dilation.

GIVING BRAINLIEST TO THE CORRECT ANSWER!!

Marta's dog just had six puppies. Four are female (F), and two are male (M). One of the males is brown. Two of the females are brown. All puppies are either brown or white. If Marta randomly gives away puppies to her friends, what is the probability of a friend getting a puppy that is male, brown, or both?

4. What is the probability that a puppy Marta gives away is male, brown, or both? Explain.​

Answers

Answer:

male= 1/3 brown =1/2, both 1/6

Step-by-step explanation:

there is 2 males and 6 total, simplified is 1/3. there are 3 browns and 3 whites, so simplified is 1/2 instead of 3/6. There is only one brown male, so you cannot simplify it more than 1/6.

Brainliest PLZ PLZ PLZZZZZ

Answer:

[tex]\frac{2}{3}[/tex]

We are assuming that only one puppy is given away!

Step-by-step explanation:

6 puppies in total

4/6 are female 2/6 are male

2/6 female and brown 2/6 female and white 1/6 male and brown 1/6 male and white

We want all of the male population which is 2/6 and the 2/6 of the female population that are brown added together

[tex]\frac{2}{6} + \frac{2}{6} = \frac{4}{6} = \frac{2}{3}[/tex]

does “two radii” mean , 2+ radii because radii is the plural of radiuses ( sorry if this doesn’t make sense i’m confused )

Answers

Radii is the plural of radius so i guess that two radii means a radius and another radius

The designer wants to determine how much water is covered on the surface once the pond is filled up, she claims that the Area would be 160,000 square feet. Is she correct? Justify your answer showing work.

If you know the answer please help me

Answers

tain area can result in poor produc- tion, more ... Surface area calculation is an es- ... You may not need to measure ... distance more than once and aver- ... tangular pond is 75,000 square feet.

Do yall like chicken :3 also what is 2+2?

Answers

Answer:

Yes and no solution :)

Step-by-step explanation:

No explanation needed for the first part.

2 as a fraction is 2/1

So rewrite as 2/1 + 2/1

We can multiply the whole equation by lets say.... 428

Now we have 856/428 + 856/428

Now we can put 0 at the other side of the equation... because... yes

856/428+856/428 = 0

Now lets just move one of these to the other side of the equation :)

856/428 = -856/428

Now I dont know, how about we cancel out the denominators.

856=-856

now if we move the right side back to the left... we get

1712=0

This equation is not true therefor 2+2 has no solution

There are 42 girls and 56 boys who want to play a game each team will have both boys and girls on it the ratio of boys and girls has to be the same for each team everyone must participate in the game if the girls and boys form the greatest number of teams possible how many boys will be on each team

Answers

Answer:

7 boys will be on the team

Step-by-step explanation:

7x6=42

7x8=56

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