Answer:
If I am correct, the answer should be C
Step-by-step explanation:
The expected value of the red marker will be selected is 420. Then the correct option is C.
How to find that a given condition can be modeled by binomial distribution?Binomial distributions consist of n independent Bernoulli trials.
Bernoulli trials are those trials that end up randomly either on success (with probability p) or on failures( with probability 1- p = q (say))
Suppose we have random variable X pertaining to a binomial distribution with parameters n and p, then it is written as
[tex]\rm X \sim B(n,p)[/tex]
The probability that out of n trials, there'd be x successes is given by
[tex]\rm P(X =x) = \: ^nC_xp^x(1-p)^{n-x}[/tex]
The expected value of X is:
[tex]\rm E(X) = np\\[/tex]
A bag contains 6 red markers, 5 blue markers, and 4 green markers.
A marker is randomly selected, its color is recorded, and it is returned to the bag.
This is repeated 1050 times.
n = 1050
Then the value of p will be
[tex]p=\dfrac{^6C_1}{^{15}C_1} = \dfrac{6}{15} = 0.4[/tex]
Then the expected value will be
[tex]\rm E(X) = np\\\\\rm E(X) = 1050 \times 0.4 \\\\\rm E(X) = 420[/tex]
Learn more about binomial distribution here:
https://brainly.com/question/13609688
PLZZ HELP IM CONFUSED I NEED HELP ASAP!!!!!!! Fred and his parents are having a movie night. His parents told him he could choose one snack and one movie. The following table lists the movies and snacks he can choose.
Snacks Movies
licorice Across the Line
popcorn Frantic
sour sticks Maxed Out
Which of the following diagrams correctly shows all of Fred's choices of combinations?
Answer:
I think the answer might be C.
by converting the percentage to a fraction find 29% of 3950 kg
Answer:
I think it's 16
Step-by-step explanation:
Answer:
145.5 kilograms
Step-by-step explanation:
i have no idea how to explain it but i hope this helps.
Geometry help :) will give brainliest
Answer:
Step-by-step explanation:
2.1/4.1 = h/16.4
34.44 = 4.1h
8.4 = h
Answer:8.4
Step-by-step explanation:
Question content area top
Part 1
Last month you spent 20 $ on clothing. This month you spent 180% of what you spent last month. Set up a proportion to model this situation. How much did you spend this month?
Answer:
The answer is $56
Step-by-step explanation:
100% is 20, and 80% of 20 is 16. So you just have to add 16+20=36.That was this month.Then you add 20 +36 to combine the months.Therefore getting your answer.
For the proportion you write 80/100+x/20
find the absolute value
Answer:
0
Step-by-step explanation:
3-3 = 0
The absloute value of 0 = 0
Hope that helps
Answer:
I am pretty sure it is 0
Step-by-step explanation:
The reson is because if you subtract 3-3 you get 0 and the absolute value to 0 is 0
WHOEVER ANSWERS CORRECTLY W STEP BY STEP GETS BRAINLIEST
Find the area and the circumference of the circle. Round your answers to the nearest hundredth. PLEASE SHOW WORK
27/2=13.5(radius)
area: pi*r*r=
pi*13.5*13.5=
572.55526
rounded, 572.56
circumference: 2*pi*r(which is basically diameter times pi)
27pi=84.823
rounded, 84.82
Can you pls help me?
Answer:
B. 24 is 4 times as many as 6
Step-by-step explanation:
6 x 4 = 24
Additionally, the model shows 4 groups of 6 being equal to 24.
Therefor, 24 is 4 times as many as 6.
Please mark as brainliest ;)
Answer:
The answer is B) 24 is 4 times as many as 6.
Explanation:
24 ÷ 4 = 6
Hope this really helps your quiz/test!!
btw... Can you please give me brainlist??
one family spends $134 on 2 adult tickets and 3 youth tickets at an amusement park. Another family spends $146 on 3 adult tickets and 2 youth tickets at the same park. What is the price of a youth ticket?
Step-by-step explanation:
let
adult ticket = x
youth ticket = y
1). 2x+3y = 134
2). 3x+2y = 146
*then multiply line 1). by the first number of line 2).
*then multiply line 2). by the first number of line 1).
1). (2x+3y = 134 ) x 3 = (6x + 9y = 402)
2). (3x+2y = 146) x 2 = (6x + 4y = 292)
*subtract new line 2). from new line 1).
5y = 110
y = 110/5 = $22
This is the value for youth ticket.
If another question asks for adult you do as follows:
*put this value for y in either original equation, I'll chose line 1).
2x+3y = 134
2x + (3x22) = 134
2x + 66 = 134
2x = 68
X = 68/2 = $34.
Hope the explanation helps, let me know if you need any further explanation
Which system of equations have the same solutions?
A. L and M
B. L and N
C. M and N
D. L, M, and N
Susan has a 6 3/5m of ribbon and her sister has 1/3 of a 10m ribbon. How much more ribbon does Susan have than her sister
Answer
49/15
Step-by-step explanation:
because 1/3 of a 10m is 10/3 which is about 3.3 repeating
and 6 3/5 minus 10/3 is 49/15 which is also 3 4/15.
I need help fast pls
Answer:
1. no
2. no
3. no
4.yes
Step-by-step explanation:
1. if you solve this you will get -11/120 and you want 3/7
2. no because you will get 5/16 and you want 5/8
3. no because you will get 3/8 and you want 5/8
4. yes because you will get 5/8
Mark graphed points on the coordinate plane below to represent the locations of his school and a bank. Mark wants to add the location of the library on the coordinate plane. The distance from the library to the school is the same as the distance from the bank to the school. Which ordered pair could be the coordinates of the library?
which set of equations would have infinite solutions?
BRAINLIEST TO THE ONE WHO WILL ANSWER ME FIRST.
find the volume of the composite figure.
Answer:
216 in³Step-by-step explanation:
Take the composite figure, with the base, made up of the rectangle with dimensions 4 in x 6 in and the triangle with base of 6 in and height of 4 in, and the height of the figure is 6 in.
Find the volume:
V = base x heightV = (4*6 + 4*6/2)*6 = (24 + 12)*6 = 36*6 = 216 in³A standard number cube, numbered 1 through 6 on each side, is rolled 3 times. What is the probability of rolling a 2 on all three rolls? Enter the answer as a fraction
Answer:
1/(6^3)
Step-by-step explanation:
Each roll of the die constitutes a separate event.
These three events are independent.
The probability of rolling a 2 on the first throw is 1/6, since there is only one '2' among the six numbers on the die.
Because each roll is independent of the others, the probability of rolling a
2 1
on all three rolls is (1/6)(1/6)(1/6), or -----------
6^3
Jenna bought four composition notebooks in three pocket folders from the bookstore and paid $9.85. If the cost of a pocket folder is $1.15 less than the cost of a notebook, find the cost for a notebook.
Answer:
9.85 - 1.15 = 8.70
Step-by-step explanation:
you jus subtract :)
Answer:
$1.90
Step-by-step explanation:
Let n represent the cost of a notebook. Jenna's purchase is ...
4n +3(n -1.15) = 9.85
7n - 3.45 = 9.85 . . . . . simplify
7n = 13.30 . . . . . . . . . . add 3.45
n = 1.90 . . . . . . . . . . . . divide by 7
The cost of a notebook is $1.90.
_____
Additional comment
The cost of a folder is 1.90 -1.15 = 0.75. The total purchase is ...
4(1.90) +3(0.75) = 7.60 +2.25 = 9.85
Write and Solve an equation for the situation (Choose your own Variable):
To join the movie club it costs $10. If you’re in the club, movie tickets cost $5 each. Jon spent a total of $70 on the movie club and movie tickets.
How many movies did he see?
A mom is 7 times older than her daughter. In five years,she will be 4 times older than her daughter. Find there ages now. I am timed so asap please
Answer:
Mom === 10.25
Daughter === 3.25
Step-by-step explanation:
Let’s the mom age be 7+x and the daughters age be x. Put it in a linear equation 7+x=5(4+x).
open the bracket which will give you 7+x=20+5x.
collect like terms which will give you 5x-x=20–7 and you will get 4x=13 where x is 3.25 the mom is 10.25 and the daughters age is 3.25
Answer:Answer:mom 10.25
kid 3.25
Step-by-step explanation:multiplication
Which of the following should you multiply by to find 7% of a total?
1) 7/10
2) 0.7
3) 0.07
4) 7
Answer:
3
Step-by-step explanation:
7% written in decimal is 0.07.
Hope this helps!
An employee compiled sales data for a company once each month. The scatter plot below shows the sales (in multiples of $1000) for the company over time (in months). The equation represents the linear model for this data.
y = 0.94x + 12.5
According to the model, how much do the company's sales increase per month?
$940
$1250
$5000
$9400
$12,500
A graph measuring sales in relation to time. A line indicates that sales increase as time increases
Answer:
Im pretty sure its 5000
Step-by-step explanation:
i hope this helps im a bit rusty
What is the slope of the line that passes through (-1.5, -3)
Answer:
1/2 if it is linear
Step-by-step explanation:
Hope this helps!
pleaseeee help me - look at pic
Answer:
a = 105 dollars and c = 60 dollars.
Step-by-step explanation:
multiply 105 by 60 to get 6,300
divide 6300 by 105 for a. its 60.
Reversing for children or c, its 105.
In this case, 6300 tickets were sold total. that's just total though.
Marissa compared coffeepot prices at three different stores. One of the stores advertised a discount, one was an online store that charged shipping, and one just showed a regular price. The prices are shown below:
Name Price Discount
American Discounters $149.49 30%
The Coffee Hut $91.99 15% of the cost of the item
The Bean $106.49
Part A:
What is the least expensive place to purchase the coffeepot? (Round your answers to the nearest cent.)
Part B:
Sales tax for all 3 retailers is 7.5%. What is the cost to purchase the cheapest coffeepot?
Answer:
Part A: The Coffee Hut | Part B: 104.25
Step-by-step explanation:
Part A: the coffee hut is the cheapest rounded or not rounded
Part B: 91.99 ÷ 7.5 = 12.26 + 91.99 = 104.25
Answer: Part A is the American Discounters at $104.64 Part B is $112.49
Step-by-step explanation:
Am. Disc. = 149.49 minus 30% = 149.49 -44.85 = 104.64.
Coffee Hut = 91.99 plus shipping (15% ) or $13.80 = $105.79.
The Bean = $106.49
Am. Discounters is cheapest.
Add in the tax = 7.5% of 104.64 = 7.85 for a total of 112.49
50 POINTS TO WHOEVER SOLVES ALL OF THESE!!!!!!! PERCENTAGES
Original Price:100% Discount Amount: 20% New Price: Pay 80% Expression:
100
50
28
14.50
x
100 50 28 14.5 i don't know anyone else who know this
Can someone please help me?
Answer: pi is 3.14
and it would be 3.1
Step-by-step explanation:
Answer:
1:28.26
2:28.30
Step-by-step explanation:
since Pi ([tex]\pi[/tex]) is 3.14 and the radius is 9 in we multiply:
[tex]\pi[/tex]
x 9
28.26 and then we have too round for question 2 so we use the "5 or more go up 4 or less go down" rule and since theres a decimal were rounding the 0.26, so we take away the 0.2, now we have 0.06, and since 6 is 5 or more we round up turning it to 0.1, Now we bring back the 0.2 and add them to make 0.3 or 0.30, lets not forget about the 28 and 28 + 0.30 = 28.30 or 28.3 since there is no need for a zero to be there.
The Smart Blues and the Royal Reds are playing a football game. The Smart Blues' first play goes for -2 yards. How much did the Smart Blues gain or lose?
Answer:
They lose 2 yards
Step-by-step explanation:
Negative or anything with a negative sign means you lose or decrease an amount. If you said they lost -2 yards, then that would be a positive. It's like saying a "no" to a "no."
Change mixed fraction to improper fraction.
Answer:
2 3/4 = 11 /4
8 2/3 = 26/3
2 1/2 = 5/2
Answer:
11/4 26/3 5/2
Step-by-step explanation:
The____of the number of____an event occurs to the total number of trials.
Answer:
The ratio of the number of times an event occurs to the total number of trials.
Step-by-step explanation:
Answer:
The ratio of the number of time
HELPPPP PLZZ ND THANK YOU SOO MUCH
Answer:
50, 40, 30, 250, 350
Step-by-step explanation:
1/2 = 0.5, 0.5 x 100 = 50 (0.5 -> 5 -> 50)
2/5 = 0.4 (10 / 5 [the denominator] = 2, 0.2 x 2 [the numerator] = 0.4), 0.4 x 100 = 40 (0.4 -> 4 -> 40)
3/10 = (10 / 10 [the denominator] = 1, 0.1 x 3 [the numerator] = 0.3), 0.3 x 100 = 30 (0.3 -> 3 -> 30)
5/2 = 2.5 (2 1/2), 2.5 x 100 = 250 (2.5 -> 25 -> 250)
7/2 = 3.5 (3 1/2), 3.5 x 100 = 350 (3.5 -> 35 -> 350)
Note: I'm not sure if I understand the question completely, but I changed the fraction into a decimal and multiplied it by 100. Not sure what it means by "Divide fraction".
Answer:
According to the question , firstly we have to divide the fraction and then convert them into percentage
So , let's do it :-
1/2 = 0.5 = 50 %2/5 = 0.4 = 40 %3/10 = 0.3 = 30%5/2 = 2.5 = 250%7/2 = 3.5 = 350%