Kindly note that the question says 4; maybe the final question was intended to be the probability that he gets exactly 2 of the 4 correct. However. If it is the other way round. This a e procedure used in the solution should also be followed.
Answer:
0.21
Step-by-step explanation:
Number of options = 4
One correct answer per option ; hence, the probability of success, p = 1/4 = 0.25
Using the binomial probability relation :
P(x =x) = nCx * p^x * (1 - p)^(n - x)
x = 2 ; n = 4
p = 0.25 ; 1 - p = 0.75
P(x = 2) = 4C2 * 0.25^2 * 0.75^2
P(x = 2) = 6 * 0.0625 * 0.5625
P(x = 2) = 0.2109375
P(x = 2) = 0.21 (2 decimal places)
Note : if the question was 3, then put, n = 3 instead of 4
The personnel department of a large corporation wants to estimate the family dental expenses of its employees to determine the feasibility of providing a dental insurance plan. A random sample of 12 employees in 2004 reveals the following family dental expenses (in dollars): 115, 370, 250, 93, 540, 225, 177, 425, 318, 182, 275, and 228. The sample mean is
Answer:
The answer is "266.5".
Step-by-step explanation:
Given value:
[tex]115, 370, 250, 93, 540, 225, 177, 425, 318, 182, 275, and\ 228.[/tex]
find:
Sample mean=?
[tex]=\frac{\text{total dental expenses}}{number \ of \ employees}[/tex]
[tex]=\frac{115+370+250+93+540+ 225+ 177+ 425+ 318+ 182+ 275+228}{12}\\\\=\frac{3,198}{12}\\\\=266.5\\\\[/tex]
What is the Place value of 3.35
Answer:
3.35 = (3 * 100) + (3 * 1/101) + (5 * 1/102)
3.35 = (3 * 1) + (3 * 1/10) + (5 * 1/100)
3.35 = 3 + 3/10 + 5/100
3.35 = 3 + 0.3 + 0.05
Rewrite the polynomial 2x2 + x + +-7x + 1 in standard form.
Answer:
x-7x+5
Step-by-step explanation:
4+x-7x+1
x-7x+5
Lucy buys a greeting card for $4.50 She then buys 5 postcards that all cost the same amount. The total cost is $7.00 How much is each postcard?
solve rational function
Without using your calculator work out 1 7/12 + 13/20. Give answer in its simplest from
Answer:
31/15
Step-by-step explanation:
First, find the common multiplier of 20 and 12 (the lowest number that both fractions can be increased to). This is 60 (12 x 5 = 60, 20 x 3 = 60) and adjust the numerators accordingly: multiply 17 by five to get 85, and multiply 13 by three to get 39. Add them up to get 124/60, and then simplify - the answer will be 31/15! Hope this helps! Sorry if this was tough to understand, typing off my phone, so feel free to ask any questions :)
Answer:
0.720833
Step-by-step explanation:
First find the LCM of the two fractions
Then add the numerators together
form a single fraction
Lastly cancel the numerator and denominator if possible
I am doing this test and I need questions questions ASAP I will give brainiest to whoever answers it correctly
Answer:
The correct answer there is the first option
27. Justice has $3.35 in her wallet. Which
fraction is equivalent to the amount of money in
her wallet?
Allen buys the same number of baseball cards each month to add to a card collection he was given. Use the table to determine how many baseball cards he was given and how many he buys each month.
Answer:
H.
Step-by-step explanation:
I believe this is the answer because when you look at the problem and see the rate of change pattern months go +2 , +3, +2, and +3. Then when you look at the cards rate of change 80-44=36, so +36 then 104-80=24, so +24. as you can see when you subtract the rates if change between the cards (36-24), you get 12. Therefore y=12x. next you go along with the pattern and find the y-intercept by doing 44-24=20. Sorry it is kinda hard to explain, but hope this helps!
Allen was given 20 cards , and he buys 12 cards each month
What is an Equation of a line?The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept
And y - y₁ = m ( x - x₁ )
y = y-coordinate of second point
y₁ = y-coordinate of point one
m = slope
x = x-coordinate of second point
x₁ = x-coordinate of point one
The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )
Given data ,
Let the equation of line be represented as A
Let the number of cards be y
Let the number of months be x
Let the first point be P ( 5 , 80 )
Let the second point be Q ( 7 , 104 )
Now , the slope of the line is m = ( y₂ - y₁ ) / ( x₂ - x₁ )
Substituting the values in the equation , we get
Slope m = ( 104 - 80 ) / ( 7 - 5 )
m = 24 / 2
m = 12 cards per month
So , the equation of line is y - y₁ = m ( x - x₁ )
y - 80 = 12 ( x - 5 )
Adding 80 on both sides , we get
y = 12x + 20
So , when x = 0
y = 20 cards in the initial month
Hence , the equation of line is y = 12x + 20 and Allen has 20 cards in his initial month
To learn more about equation of line click :
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Franklin the fly starts at the point $(0,0)$ in the coordinate plane. At each point, Franklin takes a step to the right, left, up, or down. After $10$ steps, how many different points could Franklin end up at?
Answer:
80 different points.
Step-by-step explanation:
right, left, up, or down = 4 possibilities x 2 since there is a coordinate with 2 numbers so,
8 possibilities.
8 x 10 = 80 possibilities.
Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. After $10 steps, the number of different points that could Franklin ends up at 1048576.
What is multiplication?Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. For example, 3 × 4 means 3 is added to itself 4 times, and vice versa for the other number.
Given that Franklin can move in 4 direction after each step, therefore, the number of choices that Franklin have is,
Number of points = 4×4×4×4×4×4×4×4×4×4 = 4¹⁰ = 1048576
Hence, After $10 steps, the number of different points that could Franklin ends up at 1048576.
Learn more about Multiplication:
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Please help me!! It’s a test!!
A carbon filter is used by a scientist to filter out small particles of soil and rocks from
a water sample taken from a stream. The exponential function F(x) = 500(0.35) can
be used to model the function. Which of the following could be represented by the
value 500 in the function rule?
Answer:
The number of particles of soil and rock particles found in the water.
Step-by-step explanation:
Since we are filtering out small particles of soil and rocks, then we can assume that they are being reduced greatly with each filter. So we can assume that since the 500 is being reduced by 65%, then the 500 is the only other thig being reduced, which in this case is the particles of soil and rocks.
Please Help i need this done
Answer:
i think u add 2.5 everytime
Step-by-step explanation:
for example start with(0, 2.5) 0n the graph then add 2.5 to 2.5 then keep adding if im wrong srry
what is the volume of the sphere?
Answer:
The formula for the volume of a sphere is V = 4/3 πr³.
Step-by-step explanation:
Surface area of sphere = 4πr2
Volume of a sphere = 4/3 πr3
You only need to know the radius to figure both the volume and surface area of a sphere.
Answers for surface area problems should always be in square units.
Answers for volume problems should always be in cubic units.
-4x+3x<4 what is the awenswer to this equation
Answer:
X > -4
Step-by-step explanation:
Collect the like terms which literally leaves you with -x<4
Then just changes the signs, hence the answer.
Please mark brainliest!
3 An expression is shown below
3 +8+4x2 - 12
Place the parenthesis in the expression
so that it has a value of 18.
55 times 4 and time 3 equals what?
Answer:
55 times 4 =220
220 times 3 =660
6²_4+2
Please helpppppppppppppppppppppppppppp
Answer:
6². is 64
4 + 2 is 6
64 - 6
is 58
Answer:
6² - 4 + 2 = 34Steps:
6² - 4 + 2 = 36 - 4 + 2 (exponents first 6²=36)
(subtraction and addition have the same degree! so we do whichever one comes first! "order")
6² - 4 + 2 = 32 + 2
6² - 4 + 2 = 34
Please help, only if you know though thank you
Determine the length of side QS
Question 14 options:
A)
2.4
B)
5.7
C)
3.4
D)
1.9
Answer:
Use the Pythagorean therm. the answer is D
Step-by-step explanation:
the square root of 1.2(squared) + 1.4(squared) = 1.84 so if you were to determine the side length it would be D
(-4,9) on the coordinates plane
Answer is below n attachment
Oriole Rental Company provided the following information to its auditors. For the year ended March 31, 2017, the company had revenues of $876,223, general and administrative expenses of $352,479, depreciation expenses of $131,455, leasing expenses of $108,195, and interest expenses equal to $78,122. If the company's average tax rate is 34 percent, what is the cash flow from operating activity for Oriole Rental? (Round intermediate calculations and final answer to the nearest whole dollar, e.g. 5,275.) Cash flow from operation
Answer:
the cash flow from operation is $267,397
Step-by-step explanation:
Given that
Revenues be $876,223
General and admin expense $352,479
Depreciation expense $131,455
Leasing expense $108,195
Interest expense $78,122
Tax rate is 34%
We need to find out the cash flow from operation
As we know that
Cash flow from operation = (Revenue - general & admin expense - depreciation - leasing - interest) × (1 - tax rate) + depreciation
= ($876,223 - $352,479 - $131,455 - $108,195 - $78,122) × (1 - 0.34) + $131,455
= $205,972 × (1 - 0.34) + $131,455
= $267,397
Hence, the cash flow from operation is $267,397
2 A line passes through the point (9,-8) and has a slope of 3 ving Write an equation in point-slope form for this line.
Answer:
y=3x-35
Step-by-step explanation:
y=ax+c
a=slope=3; x and y are given, 9 and -8. put into the formula and solve for c.
-8=9*3+c
-35=c
y=3x-35
Yesterday, there were 30 problems assigned for math homework. Nancy did 10% of them correctly. How many problems did Nancy get wrong?
1.) 5
2.) 10
3.) 20
4.)27
Answer:
i dont know if this is right but im pretty sure its 5
Step-by-step explanation:
Answer:
4.) 27
Step-by-step explanation:
Just take 30 and - 10% = 27
Because you are looking for the wrong one so you always have to see how many it was before and how many it was after. Sometimes you can minus the number and then that's the answer you get from minusing
1/2 as an epuivalent fraction,decimal or percent
Answer:
50% OR 0.50 OR 5/10 6/12
Step-by-step explanation:
LN = x and MP = 3x-8
Answer:
The result can be shown in multiple forms.
Exact Form:
x
=
e
4
3
x
=
e
4
3
Decimal Form:
x
=
18.19938334
…
Step-by-step explanation:
Select ALL the correct answers.
Which shapes have the same volume as the given rectangular prism?
8 cm
15cm
base area = 50 cm
Answers
A.) 15cm 5cm height base area 50 cm
B.) 8cm 5cm height base area 50 cm
C.) 24 cm height base area 50 cm
D.) 18 cm 15 cm height base area 50 cm
Answer: I think it’s A the cylinder
Step-by-step explanation:
For PLATO users, the answers are the cylinder and the cone, NOT EITHER OF THE PYRAMIDS!!! Your welcome....
Peele is interested in the average price of an entree at a French restaurant, but only has a random sample of 9 prices (prices are not listed on the menu). Using this random sample, Key calculates that a 90% confidence interval for the true mean is given by (65, 88). (You can assume the prices follow a normal distribution). Use this information to do the following:
a) Calculate 7. (Hint, what does a confidence interval look like?)
b) Calculate s.
c) Construct a 95% confidence interval for the true mean price of all the entrees, f.
Answer:
Xbar = 76.5
s = 24.70
(61.19 ; 91.81)
Step-by-step explanation:
Given that :
Confidence interval = (65, 88)
Recall:
Confidence interval = xbar ± margin of error
Margin of Error = (upper boundary - lower boundary) / 2
Margin of Error = (88 - 65) /2 = 11.5
Taking the lower boundary :
Lower boundary = xbar - margin of error
xbar = lower boundary + margin of error
Xbar = 65 + 11.5
Xbar = 76.5
Margin of Error = Tcritical * s/sqrt(n)
s = sample standard deviation
Tcritical at 90% confidence, df = 9-1= 8 = 1.397
11.5 = 1.397 * s/sqrt(9)
11.5 = 1.397 * s/3
34.5 = 1.397s
s = 34.5 / 1.397
s = 24.695
s = 24.70
C.) 95% confidence interval :
Tcritical at 95%, df = 8 = 1.860
Margin of Error = 1.860 * 24.70/sqrt(9) = 15.311
Confidence interval :
Lower boundary = 76.5 - 15.311
Upper boundary = 76.5 + 15.311
(61.19 ; 91.81)
Daryl had a $33 credit on his phone bill. He was then
charged $39 for this month's usage. What is his new
balance?
Answer:
6
Step-by-step explanation:
Plato
I git dune wif this in 3 minits
782+821=___
2x2=___
Answer:
♡♡♡♡♡♡♡♡♡♡♡♡
Step-by-step explanation:
782 + 821 = 1,603
2 x 2 = 4
1
Write the equation of a circle whose center is at (-11,–8) and whose radius is 4.
Answer:
Step-by-step explanation:
[tex](x_c,y_c)=(-11,-8) \quad r=4\\(x-x_c)^2+(y-y_c)^2=r^2 \quad (x+11)^2+(y+8)^2=4^2[/tex]