Answer:
"p," the probability of success, is the chance of winning a prize. This is equal to 50% (1/2).
1 - p, the probability of failure, is the chance of not winning or losing a prize. This is equal to 50$ (1 - 0.5).
Step-by-step explanation:
When an outcome is obtained from two events, the probability of the outcome happening is 50% (1/2).
On the other hand, the probability of the intended outcome not happening is the difference between 1 and the probability of obtaining the outcome from the two events. This is statistically expressed as 1 - p.
The probability of getting heads is 1/2 or 0.5 and the probability of failure is 0.5 or 50%.
What is probability?It is defined as the ratio of the number of favourable outcomes to the total number of outcomes, in other words, the probability is the number that shows the happening of the event.
We have:
Win a prize if it comes up heads.
p(getting heads) = win prize
Number of outcomes = {H, T}
Total number of outcomes = 2
Favourable outcomes = {H}
Number of favourable outcomes = 1
p(getting heads) = 1/2 = 0.5
The complement probability of the above event:
= 1 - p
= 1 - 0.5
= 0.5 or 50%
The above probability represents the chances not getting head or probability of failure.
Thus, the probability of getting heads is 1/2 or 0.5 and the probability of failure is 0.5 or 50%.
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Lucy buys 7kg of nuts to sell.
She pays £10 for the nuts.
Lucy puts all the nuts into bags.
She puts 350g of nuts into each bag.
She then sells each bag of nuts for 75p.
Lucy sells all the bags of nuts.
Work out her percentage profit.
Answer:
Lucy's percentage profit = 33.33% based on Sales Value
and 50% based on Cost.
Step-by-step explanation:
a) Calculations:
7kg = 7,000g of nuts
Cost of 7,000g = £10
350g = 20 bags (7,000/350)
Sales value = £15 (20 x 75p)
Profit = Sales value minus Cost
Profit = £5 (£15 - £10)
Profit percentage based on sales = Profit/Sales x 100 = 5/15 x 100 = 33.33%
Profit percentage based on cost = Profit/Cost x 100 = 5/10 x 100 = 50%
b) Profit is the excess of sales over cost. There are two ways to express it in percentages. Profit can be expressed as a percentage of the cost (Markup). It can also be expressed as the percentage of the sales value (Margin).
Which equation represents the slope-intercept form of the line below?
6+
y-intercept = (0, 3)
slope = 4
Answer:
y = 4x+ 3
Step-by-step explanation:
The slope intercept form of a line is
y = mx+b where m is the slope and b is the y intercept
y = 4x+ 3
Which triangle’s area would be calculated using the trigonometric area formula?
Triangle E F D is shown. The length of E F is 10, the length of D F is 7, and the length of D E is 12.
Triangle Q R P is shown. The length of Q R is 5 and the length of R P is 6. Angle Q R P is 40 degrees.
Triangle A B C is shown. The length of A B is 4 and the length of B C is 5. Angle B C A is 25 degrees.
Triangle X Y Z is shown. The length of Y Z is 4. Angle Z X Y is 29 degrees and angle X Y Z is 110 degrees.
Answer:
Triangle Q R P is shown. The length of Q R is 5 and the length of R P is 6. Angle Q R P is 40 degrees.
Step-by-step explanation:
The trigonometric formula refers the two sides length of the triangle and it also consists of included angle to find out the area
A = [tex]\frac{1}{2}[/tex] ab sin C
QPR contains two sides and the included angle
XYZ has one side and the two angles
DEF has only three sides
And, the ABC contains two sides but does not have the included angle
Based on the explanation above, the correct option is B
Answer: the second option aka B
Step-by-step explanation: The other person explained it and I'm just here to tell you they gave the correct and answer for edge 2020.
If a variable has a distribution that is bell-shaped with mean 16 and standard deviation 6, then according to the Empirical Rule, 99.7% of the data will lie between which values? g
Answer:
99,7 % of all values will be in the interval ( -2 ; 34)
Step-by-step explanation:
Empirical Rule for the normal distribution with mean X, implies that the intervals :
X ± σ will contain 68 % of all values
X ± 2σ will contain 95 % of all values
X ± 3σ will contain 99,7 % of all values
Therefore in the interval X - 3σ ; X + 3σ
X - 3*6 = X -18 = 16 - 18 = -2
And
X + 3*6 = X + 18 = 16 + 18 = 34
99,7 % of all values will be in the interval ( -2 ; 34)
Please help guys thank u
Answer:
a. 1/3 or about 33.33%
b. 5/6 or about 83.33%
Step-by-step explanation:
Answer:
the possibility of a red one is 33.4%
The possibility of a non yellow one is 83.3
Step-by-step explanation:
What’s the correct answer for this question?
Answer: choice D 1/2
Step-by-step explanation:
Events A and B are independent if the equation P(A∩B) = P(A) · P(B) holds true.
so
1/6=1/3*p(A)
p(A)=1/2
8. 3/4 is expressed as a percentage is
Answer:
75%
Step-by-step explanation:
Divide 3 by 4 to get 0.75. Round to 75%.
Answer:
75%
Step-by-step explanation:
Divide 3 by 4 to get 0.75 and multiply by 100 to convert from a decimal to a percentage. The answer will be 75%.
Hope this helps!!! PLZ MARK BRAINLIEST!!!
148 is 37% of what amount
Answer:
400
Step-by-step explanation:
Answer: 148 is 37% of What Number? 37% of 400 is 148. 100% of 400 is 400, therefore 37 percent of 400 equals 148.
Brainlest would be appreciated.
In a 30 degree, 60 degree, 90 degree triangle shortest side is 9. Find the lengths of the other sides
Answer:
To find the second-shortest side we'll multiply 9 by √3 which is 9√3 and for the hypotenuse we'll do 9 * 2 = 18.
The random variable x is the number of vehicles that pass through an intersection in a 30-minute interval. It can be assumed that the probability of an occurrence is the same in any two time intervals of an equal length. It is known that the mean number of occurrences in 30 minutes is 9. What is the expected value of the random variable x?
Answer:
9 is the correct answer to the given question .
Step-by-step explanation:
AS mention in the question the random variable x is the number of vehicles that passing through the intersection in the 30-minute .So we concluded that it is normal distribution because in the normal distribution the variable values are divided .
In the Normal distribution
[tex]Mean \ number\ =\ Expected\ value\ \\Here Mean number\ =\ 9[/tex]
Therefore the Expected value =9.
I need help asaap!!!!
Answer:
Answer choice 3
Step-by-step explanation:
Option 3 is correct one
∠TQS ≅ ∠RSQ
⇒ ΔTQS ≅ ΔRSQ
⇒ QR≅ST and QT≅RS
QRST is parallelogram by definition
Answer:
Option 3
Step-by-step explanation:
Angle TQS is congruent to angle RSQ and can be proved by alternating interior angle theorem.
Triangle TQS is congruent to triangle RSQ.
Line QR is congruent to line ST.
Line QT is congruent to line RS.
The two-way frequency table below shows the preferred communication method of employees at a company, based on years of employment with the company. Text Message Instant Message Phone Call Email Total 0 to 7 years 36 49 8 21 114 8 or more years 12 22 19 43 96 Total 48 71 27 64 210 What percentage of employees with 8 or more years at the company reported that email is their preferred method of communication? A. 44.79% B. 20.48% C. 48.84% D. 67.19%
Answer:
The percentage of employees with 8 or more years at the company that reported that email is their preferred method of communication is 30.48%. I suppose there was a small typing mistake in option B.
Step-by-step explanation:
The proportion is the number of desired outcomes divided by the number of total outcomes.
The percentage is the proportion multiplied by 100.
In this question:
210 employees with 8 of more year.
Of those, 64 have the email as their preferred method of communication.
64/210 = 0.3048
0.3048*100 = 30.48%
The percentage of employees with 8 or more years at the company that reported that email is their preferred method of communication is 30.48%. I suppose there was a small typing mistake in option B.
In this exercise we have to use the percentage knowledge to calculate the number of employees of the company over the years, in this way we find that this corresponds to:
The percentage of employees with 8 or more years at the company that reported that email is their preferred method of communication is 67,9%. Is D.
They are using the data informed in the text, we have:
210 employees with 8 of more year. Of those, 64 have the email as their preferred method of communication.
So doing the percentage calculation we have that;
[tex]210-64=146\\(146*100)/210=67,19\%[/tex]
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A culture started with 5,000 bacteria. After 7
hours, it grew to 6,500 bacteria. Predict how
many bacteria will be present after 19 hours.
Round your answer to the nearest whole
number
Answer:
~9071
Step-by-step explanation:
A culture started with 5,000 bacteria.
After 7 hours, it grew to 6,500 bacteria.
=> The number of bacteria that grew after 7 hours: 6500 - 5000 = 1500
=> The number of bacteria that will grow after 19 hours: 1500 x 19/7 = ~4071
=> The number of bacteria that will present after 19 hours:
N = 5000 + 4071 = ~9071
Hope this helps!
Answer:
10,200
Step-by-step explanation:
Mary can make a costume twice as fast as Sam can can. If they both work together, they can make it in 6 hours. How long will it take Mary to make the costume if she works alone?
Answer:
2 hours
Step-by-step explanation:
Mary=x
Sam=2x
Mary+Sam=3x=6hours
x=2hours
Please answer this question for me thank you !! 20 Points !! Will give brainliest !!
Answer:
b
Step-by-step explanation:
In a parralel graph, the slopes would always be the same. The intercept in the answer is 2, showing that the coordinate points are (0,2)
Hope this helps!:)
Answer:
B) y = 2x + 2
Step-by-step explanation:
Firstly, you have to know that parallel lines have congruent slopes. That means that the slope of this line will be 2.
Next, make a point slope form of the equation:
y - y1 = m(x - x1)
y - 2 = 2(x - 0)
y - 2 = 2x - 0
Now, we can make it into slope intercept form.
y - 2 = 2x
y = 2x + 2
Hope this helps :)
What is 25percent of 60
answer: 15
----------------
Answer:
15
Step-by-step explanation:
60 divide by4
The table shows the heights of the winners and runners-up of 8
presidential elections. Find the line of regression that predicts the
runner-up's height given the winner's height. Determine if the
regression line is a good predictor of heights for the winners and
runner-ups of presidential elections.
Winner
69.5
73
73
74
74.5
74.5
71
71
Runner-Up
72
69.5
70
68
74
74
73
76
Answer:
The table shows the heights of the winners and runner-ups of 8 presidential elections. Find the line of regression that predicts the runner-up's height given the winner's height. Determine if the regression line is a good predictor of heights for the winners and runner-ups of presidential elections.
Winner: 69.5; 73; 73; 74; 74.5; 74.5; 71; 71
Runner-Up: 72; 69.5; 70; 68; 74; 74; 73; 76
a. y = 95.4 - 0.321x; no, because the r-value is low.***
b. y = -0.321 + 95.4x; no, because the r-value is low.
The regression line is NOT a good predictor of heights for the winners and runner-ups of presidential elections because the r-value is low
Calculations and Parameters:Given that:
The data given for the winners are:
69.5; 73; 73; 74; 74.5; 74.5; 71; 71
The runners up are:
72; 69.5; 70; 68; 74; 74; 73; 76
With this, we can see that a. y = 95.4 - 0.321x; no, because the r-value is low.
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Consider the system:
y = 3x + 5
y = ax + b
What values for a and b make the system
inconsistent? What values for a and b make the
system consistent and dependent? Explain.
Answer:
Step-by-step explanation:
In this problem, we have the following linear equations:
y=3x+5
y=ax+b
We know that a linear equation is an equation for a line. In a system of linear equations, two or more equations work together.
1. What values for a and b make the system inconsistent?
A system is inconsistent if and only if the lines are parallel in which case the system has no solution. This is illustrated in the first Figure bellow. Two lines are parallel if they share the same slope. So, the system is inconsistent for:
a=3
for any value of b
2. What values for a and b make the system consistent and dependent?
A system is consistent if and only if the lines are the same in which case the system has infinitely many solutions. This is illustrated in the second Figure bellow. So, the system is consistent and dependent for:
a=3 and b=5
Answer:
When a = 3 and b ≠ 5, the system will be inconsistent because the lines will be parallel. When a = 3 and b = 5, the system will be consistent and dependent because they represent the same line.
Step-by-step explanation:
How do I set up this problem. I'm lost
Answer:
the answer is 64 .
Step-by-step explanation:
basically i just divided 48 by 2.4 and got 20 .. so that means that 20 has to be the multiplied factor so i just multiplied 3.2 by 20 and got 64.
Suppose f (x )right arrow 250 and g (x )right arrow 0 with g(x)greater than0 as x right arrow 5. Determine ModifyingBelow lim With x right arrow 5 StartFraction f (x )Over g (x )EndFraction .
Answer:
The limit is [tex]\lim_{x \to 5} \frac{250}{0} = \infty[/tex]
Step-by-step explanation:
The equation given are
[tex]f(x) \to 250[/tex]
and [tex]g(x) \to 0[/tex]
with [tex]g(x) > 0 \ as\ x ---> 5[/tex]
The objective is to obtain
[tex]\lim_{x \to 5} \frac{f(x)}{g(x)}[/tex]
This mathematically evaluated as
[tex]\lim_{x \to 5} \frac{250}{0}[/tex]
[tex]= \lim_{x \to 5} \frac{250}{0} = \infty[/tex]
Simplify this equation x2-5x-36
Answer:
[tex]=\left(x+4\right)\left(x-9\right)[/tex]
Step-by-step explanation:
[tex]x^2-5x-36\\\mathrm{Break\:the\:expression\:into\:groups}\\=\left(x^2+4x\right)+\left(-9x-36\right)\\\mathrm{Factor\:out\:}x\mathrm{\:from\:}x^2+4x\mathrm{:\quad }x\left(x+4\right)\\\mathrm{Factor\:out\:}-9\mathrm{\:from\:}-9x-36\mathrm{:\quad }-9\left(x+4\right)\\=x\left(x+4\right)-9\left(x+4\right)\\\mathrm{Factor\:out\:common\:term\:}x+4\\=\left(x+4\right)\left(x-9\right)[/tex]
what equation is in quadratic form
Answer:
Any equation in the form ax 2 + bx + c = 0 is said to be in quadratic form. This equation then can be solved by using the quadratic formula, by completing the square, or by factoring if it is factorable.
Step-by-step explanation:
Hope it helps
Find an equation of the line that has a slope of 2 and a y intercept of 9. Write your answer in the form y=mx+b
Answer:
y = 2x +9
Step-by-step explanation:
The slope-intercept form of the equation of a line is ...
y = mx +b
where m is the slope and b is the y-intercept.
The problem statement tells you m=2 and y=9. Putting these values into the equation form gives ...
y = 2x +9
3.
QR
find the arc length
02.83
021.99
O 12.57
0 34.56
Find the circumference and the area of a circle with diameter 7 cm.
Use the value 3.14 for n, and do not round your answers. Be sure to include the correct units in your answers.
Circumference: 0
cm
7 cm
Area:
X
Answer:
21.98 is the circumference because is it 7 pi 7 times 3.14. For the area though it is 38.48 because you need to get the radius of the circle and you divided 7 by 2 which is 3.5 and here is the work A=πr2=π·3.52≈38.48451
Step-by-step explanation:
Hope this helped and you understood if you want it would help a lot if you put it brainliest.
What is the solution to the equation a+5-2/3=9
Answer:
a= [tex]\frac{14}{3}[/tex]
a≈4.6
Step-by-step explanation:
a+5- [tex]\frac{2}{3}[/tex] =9
a+ [tex]\frac{15}{3} -\frac{2}{3}[/tex] =9
a+ [tex]\frac{13}{3}[/tex] =9
Subtract [tex]\frac{13}{3}[/tex] from both sides
a=[tex]\frac{14}{3}[/tex]
a≈4.6
Answer:
a
Step-by-step explanation:
(Please hurry)
Explain how to find the value of x
Answer:
96
Step-by-step explanation:
Exterior angles add up to 360
360 - 134-130 = 96
x = 96
Simplify the expression. (-3 + 6i)(-3 + 5i)
Answer:
When we expand we get -9 - 33i + 30i². Since i² = -1 we can write this as -9 - 33i + 30 * (-1) = -9 - 33i - 30 = -33i - 39.
Answer:
-21-33i
Step-by-step explanation:
(-3+6i)(-3+5i)=9-15i-18i+30i²=9-33i+30(-1)=-21-33i
8 cm
10 cm
The surface area of the above figure is
A. 816.8 cm2
B. 879.6 cm2
C. 565.5 cm2
D. 1131.0 cm
Hi there u have not given us the figure please correct the answer and I will send my answer.Is it a cylinder cuboid cube or?
If right triangle ABC below was rotated around side AB, which solid would be produced?
Answer: Option 3.
Step-by-step explanation:
A rotation around the side AB, means that the side AB remains fixed in the place, and we rotate the vertex C creating in this way a solid figure.
Now, this figure will Create a cone with height AB, and where the radius of the base will be BC. (Where AB is the length of the side AB in the original triangle, and BC is the length of the side BC on the original triangle)
The correct option is option 3.