help please!!!(will mark brainliest)

Help Please!!!(will Mark Brainliest)

Answers

Answer 1

Step-by-step explanation:

remember, a probability is always desired cases over total possible cases.

the class has 10+15 = 25 students.

and 5 of them will be picked as representatives to the school board.

how many total possibilities do we have ?

since picked students can be picked only once, and the sequence of the 5 picked students in the group does not matter, we have a combination without repetition :

C(25, 5) = 25! / (5! × (25-5)!) = 25! / (5! × 20!) =

= 25×24×23×22×21 / (5×4×3×2) =

= 5×1×23×22×21 = 53,130 possible outcomes.

how many desired outcomes ?

that would be how many options we have to pick 2 out of 10 and 3 out of 15 :

C(10,2) × C(15,3) = 10! / (2 × 8!) × 15! / (3! × 12!) =

= 10×9/2 × 15×14×13/(3×2) =

= 5×9 × 5×7×13 = 20,475 desired outcomes

and the probability is

20475 / 53130 = 4095 / 10626 = 1365 / 3542 = 195 / 506

= 0.385375494... ≈ 0.39


Related Questions

What is expression is equivalent to 5x + 30

Answers

Hey there!

5x + 30

5(x + 6)

= 5(x) + 5(6)

= 5x + 30

5x + 30 = 5x + 30


Therefore, the answer should be:

5(x + 6)



Good luck on your assignment & enjoy your day!


~Amphitrite1040:)

What is the probability of the next elk caught in the park being unmarked? Write the probability as a fraction, a decimal number, and a percentage.


Animal Total in Park Number Marked
elk 5,625 225
wolf 928 232
cougar 865 173
bear 1,940 679
mountain goat 328 164
deer 350 105
moose 215 86


Q: What is the probability of the next elk caught in the park being unmarked? Write the probability as a fraction, a decimal number, and a percentage.

Answers

Answer:



Fraction:     5400/5625
Decimal Number:     0.96
Percentage:     96%                                

Explantion: There are a total of 5625 elks in the park. 225 of those are marked.

5625 - 225 = 5400

So, 5400 elks are not marked yet.

5400/5626 = 0.96 = 96%

0.96 is close to 1 so we could say that it is very likely that the next elk caught will be unmarked.


Answer:

Fraction:     5400/5625

Decimal Number:     0.96

Percentage:     96%        

Step-by-step explanation:

The volume of a sphere is 420.
What is the radius?

Answers

Answer:

r≈4.65

Step-by-step explanation:

Someone please help with this

Answers

Here you go! Hope this helps you.

what color is an apple

Answers

Answer:

purple

Step-by-step explanation:

if you take red and blue u get purple. the apple is red then add blue and boom.

Answer:

it is red,

Step-by-step explanation:

there are many types of apples, not all apples are red, some are red and green some have a mix of different colors on them

Stephanie put 40% of her t-shirts in her dresser. a) If she put 36 t-shirts in her dresser, how many t-shirts does Stephanie own? b) How many t-shirts are not in her dresser?

Answers

Answer:

a.90 b.54

Step-by-step explanation:

40%=0.4 number of t-shirt in her dresser

Total number of t-shirt is 100%

=1.0

let x be the total number of t-shirt

0.4=36

1.0= x

0.4x=36

dividing both sides by 0.4

x=90

b. 90-36=54 t-shirts

Write the equation in standard form for the circle with radius 9 centered at the origin.

Answers

The standard form of the equation of a circle of radius r, with (assuming centre h, k) is given as:

(X-h)^2 + (y-k)^2 = r^2

As we are required to write an equation in standard form for the circle with radius 9 centred at the origin.
Centre(h,k)=(0,0), r=9

Substituting these values into the standard form of the equation of a circle given above:

(X-0)^2 + (y-0)^2 = 9^2
X^2 + y^2 =81

The standard form is x^2 + y^2 =81

I’m pretty sure this is right

Please help me with this please actually help me please and thank you

Answers

Answer:

C.   (x, y) → (x, -y)

Step-by-step explanation:

The algebraic representation that correctly describes a reflection over the x-axis is (x, y) → (x, -y)

Here's an example to show understanding

Plot A is (4,6) and the reflection over the x-axis would be (4,-6)    

what is the value of 6 n=2 (n-1)!/2

Answers

Answer:

16 i think

Step-by-step explanation:

What is the axis of symmetry?

Answers

The axis of symmetry of the quadratic equation is [tex]x = \sqrt 6[/tex]

How to express the solution?

One of the root is given as:

[tex]x = -2 - \sqrt 6[/tex]

As a general rule, the solution to a quadratic equation is represented by:

[tex]x =\frac{-b \pm \sqrt{b^2 -4ac}}{2a}[/tex]

This means that the actual root of the given root is:

[tex]x = -2 \pm \sqrt 6[/tex]

So, the other root is:

[tex]x = -2 + \sqrt 6[/tex]

Subtract both roots and divide it by 2 to determine the axis of symmetry

[tex]x = \frac{|-2 - \sqrt 6 + 2 - \sqrt 6|}{2}[/tex]

Evaluate

[tex]x = \frac{|-2\sqrt 6|}{2}[/tex]

Remove the absolute sign

[tex]x = \frac{2\sqrt 6}{2}[/tex]

Divide

[tex]x = \sqrt 6[/tex]

Hence, the axis of symmetry of the equation is [tex]x = \sqrt 6[/tex]

Read more about quadratic equations at:

https://brainly.com/question/8649555

#SPJ1

The box plots below show the inches flown by two different model airplanes.
Airplane A
Airplane B
+
+
190
200
210
+ ++ +
220 230
+ ++
250 260
240
Length of Flight (in.)
Which has a greater median flight length? Complete the statement
Airplane Av has a greater median flight length.

Answers

Answer:

im passing this concept trust me the anser is airplane B

Step-by-step explanation:

40 x 125% step it out

Answers

Answer:

0.50 or 50%

Step-by-step explanation:

40 x 125 = X

1.25 as a decimal or 125%

40 x 1.25 = 0.50

0.50 --->50%

40 x 125% = 50%

The money required to start a business is referred to as

Answers

Answer:

Startup Capital

Step-by-step explanation:

The startup capital is the money raised by a new company in order to meet its initial costs. Entrepreneurs would need to form a solid business plan or create a prototype in an attempt to sell their concept, which would help them gain startup capital.

Find The Median, First quartile, third quartile, and interquartile range of the data.

the numbers are 20,18,6,4,11,22,0

Answers

Answer:

Median: 88, First Quartile: 84, Third Quartile: 92, IQR (interquartile range): 8

Step-by-step explanation:

1. Sort the numbers in numerical order (like 1, 2, 3, etc.)2. Find the number that is in the middle3. Find all the quartiles by finding the median of the lower and upper halves of the list4. Subtract Q1 (quartile 1) and Q3 (quartile 3) like this: Q3 - Q1 to get IQR

can you please help me solve for x

Answers

C I think !!!
Explanation
If 3x+9 was an Extended
Answer: A

Explanation: The way you would set it up is :

16 / 3x + 9 = 20 / 45

Then you can use the butterfly method and able to solve.

What is the value of X?
A. 55°
B. 1600
C. 200
D. 50°

Answers

Answer:

50

Step-by-step explanation:

180-105=75

180-(75+55)=50

Can anyone please help me out?:)

Answers

f(x) is our regular graph where the y value is determined by the x value that is plugged in.

f(x + 2) = horizontal shift to the left 2 units

---x, the horizontal axis, is what is being altered here because the change occurs within the parenthesis. We always do the opposite action/move the opposite way when the shift occurs within the parenthesis.

f(x) + 2 = vertical shift up 2 units

---y, the horizontal axis, is what is being altered here because the change occurs outside the parenthesis. We move the function as we would expect to when the shift occurs outside the parenthesis.

Hope this helps!

Express 7 square as the sum of two consecutive positive numbers.

Answers

Answer:

24 and 25

Step-by-step explanation:

From given, we have,

7 square = 49

Let the first positive number be = x

And the second consecutive positive number is = x+1

x + (x + 1) = 49

2x + 1 = 49

2x = 49 - 1

2x = 48

x = 24

the first number x = 24

the second consecutive number x+1  = 24 + 1 = 25

Thus, 7 square = 24 + 25 (the sum of two consecutive positive numbers.)

Alexandria wants to go hiking on Saturday. She will consider these conditions when she chooses which of several
parks to visit:
She wants to hike for 2 hours.
She wants LO spend no more than 6 hours away from home.
She can
average 50 miles per hour to and from the park.
Write and solve an inequality to find possible distances from Alexandria's home to a park that satisfies the conditions.

Answers

The inequality to find possible distances from Alexandria's home to a park that satisfies the conditions is: 2+D/50≤6 and the distance is 200 miles.

Inequality

Minimum distance=(50×2)

Minimum distance=100 miles

Time (T) required to cover the distance (D)

Time=D/50 hours

Inequality is 2+D/50≤6

Hence:

Let solve for Distance (D)

D/55≤6-2

D≤4×50

≤200

Therefore the inequality to find possible distances from Alexandria's home to a park that satisfies the conditions is: 2+D/50≤6 and the distance is 200 miles.

Learn more about inequality here:https://brainly.com/question/22857154

#SPJ1

A shape is shown. What is the area, in square inches, of the shape?
7 in

Answers

Answer:

104 square inches .............

What is the slope of the line tangent to the polar curve r=3theta

Answers

The slope of the line tangent to the polar curve [tex]\rm r =3sin\theta[/tex] is 1.79.

What is the slope?

A surface on which one end or side is at a higher level than another; a rising or falling surface.

The slope of the line tangent to the polar curve;

[tex]\rm r =3sin\theta[/tex]

The slope of the tangent is given by the following formula;

[tex]\rm \text{Slope of tangent line} = \dfrac{dy}{dx} =\dfrac{ (\dfrac{dr}{d\theta}sin\theta + cos\theta)}{(\dfrac{dr}{d\theta}cos\theta-rsin\theta)}[/tex]

Differentiate the given polar curve

[tex]\rm r =3sin\theta\\\\\dfrac{dr}{d\theta}=3cos\theta\\\\[/tex]

Substitute all the values in the formula

[tex]\rm \text{Slope of tangent line} = \dfrac{dy}{dx} =\dfrac{ (\dfrac{dr}{d\theta}sin\theta + rcos\theta)}{(\dfrac{dr}{d\theta}cos\theta-rsin\theta)}\\\\\rm \text{Slope of tangent line} = \dfrac{dy}{dx} =\dfrac{ (3cos\theta \times sin\theta +3 sin \theta \times cos\theta)}{(3cos\theta \times cos\theta-3 sin \theta \times sin\theta)}\\\\\rm \text{Slope of tangent line} = \dfrac{dy}{dx} =\dfrac{3 (cos\theta sin\theta + sin \theta cos\theta)}{3(cos\theta cos\theta- sin \theta sin\theta)}\\\\[/tex][tex]\rm \text{Slope of tangent line} = \dfrac{dy}{dx} =\dfrac{ 2sin\theta cos\theta}{(cos^2\theta -sin^2 \theta)}[/tex]

Substitute the value of [tex]\theta[/tex] in the equation

[tex]\rm \text{Slope of tangent line} = \dfrac{dy}{dx} =\dfrac{ 2sin \dfrac{\pi }{6} cos\dfrac{\pi }{6} }{(cos^2\dfrac{\pi }{6} -sin^2 \dfrac{\pi }{6} )}\\\\\text{Slope of tangent line} = \dfrac{dy}{dx} =\dfrac{2 \times 0.5 \times 0.86}{0.86^2 -0.5^2}\\\\\text{Slope of tangent line} = \dfrac{dy}{dx} =\dfrac{0.86}{0.73- 0.25}\\\\\text{Slope of tangent line} = \dfrac{dy}{dx} =\dfrac{0.86}{0.48}\\\\\text{Slope of tangent line} = \dfrac{dy}{dx} =1.79[/tex]

Hence, the slope of the line tangent to the polar curve [tex]\rm r =3sin\theta[/tex] is 1.79.

Learn more about slopes here;

https://brainly.com/question/1593553

#SPJ4

In a random sample survey of 80 students at Torreys middle school, 24 students said that math was their favorite subject. There are a total of 300 students at this middle school. Based on the survey, which value is the best estimate for the number of students who would say that math is their favorite subject?

A.244
B.90
C.150
D.72

Answers

Answer:

90

Step-by-step explanation:

I say 90 because 24 is just a little higher than 1/4 of 80 and since 1/4 of 300 is 75, 90 is the best estimate based off the sample survey. Hope this helps!

PLEASE HELP MEEE! Simplify 6! − 3!

6!(1 − 2!)
3!((6x5x4) − 1)
3!(2! − 1)
6!(1 − 0.5!)

Answers

The simplified form of the expression 6! − 3! when it is simplify using the properties of factorial is 3!((6x5x4) − 1).

What is the simplified form of a term?

Simplified form of a term is the simplest way of expression the term, which is obtained  by applying the required operations of mathematics.

Factorial is the way to write the product of the numbers from its phase value to 1 in decreasing order. Suppose, the number is 3!. Then it can be written as,

3!=3×2×1

The expression which has to be simplified is,

6! - 3!

It can be written as,

6! - 3!

(6×5×4×3!)-3!

3!((6×5×4)-1)

Thus, the simplified form of the expression 6! − 3! when it is simplify using the properties of factorial is 3!((6x5x4) − 1).

Learn more about the simplified form here;

https://brainly.com/question/1597694

#SPJ1

[tex]\huge\text{Hey there!}[/tex]


[tex]\mathsf{6! - 3!}\\\mathsf{\approx 6(5)(4)(3)(2)(1) - 3(2)(1)}\\\mathsf{\approx 30(4)(3)(2)(1)- 6(1)}\\\mathsf{\approx 120(3)(2)(1) - 6}\\\mathsf{\approx 360(2)(1) - 6}\\\mathsf{\approx 720(1) - 6}\\\mathsf{\approx 720 - 6}\\\mathsf{\approx 714}\\\mathsf{\approx 3!((6\times5\times4) - 1)}[/tex]


[tex]\huge\text{Answer: \boxed{\mathsf{3!((6\times5\times4) - 1)}}}\huge\checkmark[/tex]


[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]


~[tex]\frak{Amphitrite1040:)}[/tex]

twice the sum of a number and 5 is 22 what is the number

Answers

The answer will be x=8.5

Solve the expression. use order of operations. 8x3+70/7-7

Answers

Anything divided by zero is one so the answer is 1

A student must choose to participate in two different events during field day. There are four track events, two academic events, and six team sports events. What is the approximate probability that the student will choose to participate in two team sports? 0. 114 0. 227 0. 273 0. 545.

Answers

Answer: 0.227

Step-by-step explanation:

Answer:

B. 0.227

Step-by-step explanation:

Have a great day!


The function p(x) = x(x - 5)(x − 2)(x+3) has four zeros. What is the smallest zero?
=
X =
1
1
2

X
3

Answers

Answer: The smallest zero is -3.

Step-by-step explanation: Zeros of a function are the values of input for which the function gives 0 output.

Here, the given function is,

p(x) = x(x-5)(x-2)(x+3)

For finding the zeroes of p(x),

p(x) = 0

⇒ x(x-5)(x-2)(x+3) = 0,

⇒ x = 0 or x - 5 = 0 or x-2=0 or x+3=0

⇒ x = 0 or x = 5 or x = 2 or x = -3

Thus, the zeros of the given function are 0, 5, 2, -3

In which -3 is smallest.

Answer:

x = -3

Step-by-step explanation:

x(x-5)(x-2)(x+3) = 0    means at least one of these terms = 0

so  

                        x = 0       or

x-5 = 0     then x = 5        or

x-2 = 0     then x = 2       or

x+3 = 0     then x= -3

anyone knows the answer?!​

Answers

Answer:

x^2-10x+24

Step-by-step explanation:

We need to factor the equation

(x-4)(x-6)

-4x+-6x=-10x

Set it equal to 0

x-4=0

x=4

x-6=0

x=6

Write the Prime factors that 24 and 36 have in common By showing them multiplied together

Answers

The prime factors that the numbers 24 and 36 have in common are found out to be; 2 × 2 × 3

How to get prime factors?

A prime factor of a number is simply factor of that number that is a prime number. This means that any of the prime numbers that can be multiplied to give the original number.

Now, we have;

Prime factors of 36; 2 × 2 × 3 × 3

Prime factors of 24; 2 × 2 × 2 × 3

The prime factors that they have in common will be; 2 × 2 × 3

Read more about Prime factors at; https://brainly.com/question/1081523

#SPJ1

Use the equation y=3(1/2)^x to determine the value of y if x=−2. A)3 B)4/9 C)3/4 D)12

Answers

Step-by-step explanation:

remember the rules of exponents.

a "minus" sign means 1/...

like 2^-1 = 1/2

and 2^-3 = 2^(3(-1))

so, it is 1/2³ = 1/8.

so, now here in our case

y = 3×(1/2)^-2 = 3×(1/2)^(2(-1)) = 3×((1/2)²)^-1 = 3×(1/4)^-1 =

= 3× 1 / 1/4 = 3×4 = 12

Other Questions
Can you please help me with 12 please? I will give an brainlist LA PRINCESA ______ (TENER) 20 AOS CUANDO SE CAS.5- LUIS _____ (SER) EL EMPERADOR DE MEXICO.6- CUANDO MIS HERMANAS Y YO _____ (SER) NIAS, IBAMOS AL MERCADO TODOS LOS SBADOS. Please select the word from the list that best fits the definition authority that is based on the personal characteristics of the individual exercising the power. b) f(x) = 3 |x 41| + 5Domain:Range: Read this excerpt from The Golem.There is wild disorder as neighbors, children, birds, cart-peddlers, other livestock, all run into each other in the frenzy caused by the chickens.Suddenly, the people hear a loud roar, louder even than the noise they've been making. Everyone stops even the chickens and looks up the street to see the source of the sound.A deep flood races around a corner and down the street toward them, several feet high and carrying away everything in its path. People, carts, animals, birds, all go flying down the street, carried by the racing current.What do the characters actions and stage directions show?They have planned for a natural disaster.They are unprepared for this catastrophic event.The village has a large population of people.The village has many animals living in its perimeter.help please A government where the people control their own affairs is called a(n):democracymonarchyanarchyplutocracy Which of the triangles shown are obtuse triangles?A group of triangles. Triangle A has three equal angles. Triangle B has two acute angles and one obtuse angle. Triangle C has two acute angles and one ninety degree angle. Triangle d has two acute angles and one obtuse angle.Group of answer choicesTriangle A and Triangle BTriangle B and Triangle D If x + 1 and x-1 ghe factors of f (x) = x ^ 3 + 2ax + b calculate the valves of a and b. using theses values of and by factorise f(x) completely. In how many ways can a teacher arrange 5 students in the front row of a classroom if there are 20 students in the class who was president of the United States at the end of world war 1A. William Taft B. Teddy RooseveltC. Woodrow WillsonD. Calvin Coolidge least to greatest:1.11, 1 1/10, the square root of 3, 1.73, 1 2/5 how much larger is 8 x 10^8 than 2 x 10^5 Please give me a direct answer. 06.08 Prove Your PointUsing the ideas you previously wrote in your Argument Organizer, your introduction, and body paragraphs, you will write the conclusion of your argument.Important note: You will submit your entire argument for this assignment, including the Works Cited page.View the grading rubric as you complete your work. This is your guide to a super submission.You have previously written the introduction and body paragraphs of your argument. Now you will write the conclusion to complete this argument.Be sure to use the information you previously collected in your Argument Organizer and your writing.In your conclusion, remember to:Use a conclusion transition phrase at the beginning of your paragraphRestate your claim in a new wayEnd with a conditional clincherWrite 100 or more wordsWrite in the formal style using the third person point of view.Use correct grammar, punctuation, and spelling.Add your introduction and body to the conclusion. Also include your Works Cited page.Save your work to your computer or drive.Submit your work in 06.08 Prove Your Point. Review the steps of the proof of the identityAt which step was an error made?sin (A-3) - COSA.= A.step 1step 23sinstep 3step 4Step 1: = sinAcos3 2-COSAsinn ()Step 2: = (sinA)(0) + COSA( - 1)Step 3: = (sinA)(0) + (1) (COSA)Step 4: = 0 + COSAStep 5: Cos A Have your own bedroom or your own bathroom?Also my choice would be to have my own bedroom.Please write 8 or 9 sentences.Thank you.Its because I need to color code the l sentences later.Thank you again! solve the equation 3x^2-x-3=0 to the nearest tenth According to the chart, the total amount earned by a child working in a factory was per week (working six days per week).According to the chart, the total amount earned by an adult laborer working in a factory was per week (working six days per week). Which of the following statements about religion and the two world wars is correct? I need some help with this question. What is the product of 1/3 and 4/7?