Answer:
2n-1
Step-by-step explanation:
Not sure what you needed but here is the nth term.
Mrs. Anderson has a bag of marbles. The first bag
contains 6 red marbles, 5 blue marbles, and 4 green
marbles. Mrs. Anderson will select 1 marble at random.
What is the probability that Mrs. Anderson will NOT
select a blue marble?
A. 1/3 B. 1/2 C. 1/10 D. 2/3
Answer:
[tex]P(Not\ Blue) = \frac{2}{3}[/tex]
Step-by-step explanation:
Given
[tex]Red = 6[/tex]
[tex]Blue =5[/tex]
[tex]Green = 4[/tex]
Required
The probability of not selecting blue.
This means that any of the other colors is selected.
So, we have:
[tex]P(Not\ Blue) = P(Red) + P(Green)[/tex]
[tex]P(Not\ Blue) = \frac{Red}{Total} + \frac{Green}{Total}[/tex]
[tex]P(Not\ Blue) = \frac{6}{15} + \frac{4}{15}[/tex]
Take LCM
[tex]P(Not\ Blue) = \frac{6+4}{15}[/tex]
[tex]P(Not\ Blue) = \frac{10}{15}[/tex]
Divide by 5/5
[tex]P(Not\ Blue) = \frac{2}{3}[/tex]
can anyone explain this thank you
Answer:
89.8ft
Step-by-step explanation:
678-672=6, the value for line ZW
Using Pythagoras theorem, then t²+6²=90²
t²=90²-6²
t²=8100-36
√t²=√8064
t=89.8ft
Tessa is training for a marathon she runs 13 km a day for 3 days
nice
i think there's supposed to be more to the problem lol
???
No question but I gonna answer anyway.
The total number of km she ran in 3 days = 13 x 3=39.
Need answer asap, correct answer will get brainliest.
Answer: Where is question?
Step-by-step explanation:
In any year, the weather can inflict storm damage to a home. From year to year, the damage is random. Let Y denote the dollar value of damage in any given year. Suppose that in 95% of the years Y = $0, but in 5% of the years Y = $20,000.
A. The mean of the damage in any year is $__. nothing. The standard deviation of the damage in any year is $____.
B. Consider an "insurance pool" of 100 people whose homes are sufficiently dispersed so that, in any year, the damage to different homes can be viewed as independently distributed random variables. Let barY denote the average damage to these 100 homes in a year. The expected value of the average damage barY, is $____. The probability that exceeds $is____.
Answer:
a. mean = 1000
standard deviation = 4358.9
b. expected value of average damage bar Y = 1000
probability bar y exceeds 2000 = 0.011
Step-by-step explanation:
we have p1 = 95%, y1 = 0, p2 = 5%, y2 = 20000
Mean = (0.95 * 0) + (0.05 * 20000)
= 1000
var(y) = E(y²) - E(Y)²
= we solve for E(y)²
= 0²*0.95 + 20000²*0.05
= 0 + 20000000
then the variance of y = 20000000 - 1000²
=20000000-1000000
= $19000000
standard deviation is the square root of variance
= √19000000
= 4358.9
2.
a. Expected value of average is also the mean = 1000
b. we are to find probability that barY exceeds 2000
[tex]z=\frac{2000-1000}{\sqrt{19000000/100} }[/tex]
= 1000/435.889
= 2.29
1-p(z≤2.29)
= 1 - 0.989
= 0.011
so the probability that barY exceeds 2000 is 0.011
solving proportions
Answers:
2/4 = 12/24
15/10=3/2
11/44=3/12
How we solved this: First, we need to find a denominator or numerator, when simplified, gives us the same value on the other side of the equation.
Hope this helps!
--Applepi101
Find the slope of the line passing through the points (-7,8) and (5,-7).
Which of the following theorems verifies that ABC ~ STU?
Answer:
B. AA
Step-by-step explanation:
The diagram given shows that two angles in ∆ABC are congruent to two corresponding angles in ∆STU.
Invariably, the third unknown angle of both triangles would also be equal going by the third angle theorem.
Thus, based on the AA Similarity Theorem which says that two triangles are similar to each other if two corresponding angles of one is congruent to two angles in the other, ∆ABC ~ ∆STU.
Aşağıda verilen balik kılçığı diyagramını tamamlayalım.
Answer:
Let's complete the fishbone diagram given below
thats what they said
Step-by-step explanation:
Amanda and Ndiba are selling flower bulbs for a school fundraiser. Customers can buy packages of tulip bulbs and bags of daffodil bulbs. Amanda sold 6 packages of tulip bulbs and 12 bags of daffodil bulbs for a total of $198. Ndiba sold 7 packages of tulip bulbs and 6 bags of daffodil bulbs for a total of $127. Find the cost each of one package of tulips bulbs and one bag of daffodil bulbs.
Answer:
daffodil = $13 Tulip = $7
Step-by-step explanation:
6t + 12d = 198
7t + 6d = 127
6t = 198 - 12d
t = 33 -2d
substitute
7(33-2d) + 6d = 127
231 -14d +6d = 127
- 8d = -104
d =13
6t + 12(13) = 198
6t +156 = 198
6t = 42
t = 7
A biologist studying trees constructed the confidence interval (0.14, 0.20) to estimate the proportion of trees in a large forest that are dead but still standing. Using the same confidence level, the interval was later revised because the sample proportion had been miscalculated. The correct sample proportion was 0.27. Which of the following statements about the revised interval based on the correct sample proportion is true?
A) The revised interval is narrower than the original interval because the correct sample proportion is farther from 0.5 than the calculated proportion is
B) The revised interval is narrower than the original interval because the correct sample proportion is closer to 0.5 than the mis-calculated proportion is
C) The revised interval is wider than the original interval because the correct sample proportion is farther from 0.5 than the mis-calculated proportion is
D) The revised interval is wider than the original interval because the corect sample proportion is closer to 0.5 than the mis-calculated proportion is.
E) The revised interval has the same width as the original interval.
Answer:
D) The revised interval is wider than the original interval because the corect sample proportion is closer to 0.5 than the mis-calculated proportion is.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
The margin of error is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
The larger the closer to 0.5 the value of [tex]\pi[/tex], the larger the margin of error and the wider the interval is.
A biologist studying trees constructed the confidence interval (0.14, 0.20)
This means that the estimate used was of:
[tex]\pi = \frac{0.14 + 0.2}{2} = \frac{0.34}{2} = 0.17[/tex]
The correct sample proportion was 0.27.
With [tex]\pi = 0.27[/tex], the margin of error is larger as 0.27 is closer to 0.5 than 0.17. Thus, the revised interval will be wider, and the correct answer is given by option D.
Suppose that are Yi.....Yn are i.i.d random variables with a Nâ(âμY, Ï^2Y â) distribution. How would the probability density of ȳ change as the sample size n âincreases? â
a. As the sample sizeâ increases, the variance of decreases.â So, the distribution of becomes less concentrated around.
b. As the sample sizeâ increases, the variance of decreases.â So, the distribution of becomes highly concentrated around.
c. As the sample sizeâ increases, the variance of increases.â So, the distribution of becomes highly concentrated around.
d. As the sample sizeâ increases, the variance of increases.â So, the distribution of becomes less concentrated around.
Answer:
b. As the sample size â increases, the variance of decreases. â So, the distribution of becomes highly concentrated around.
Step-by-step explanation:
Let : Yi,.... Yn are = i.i.d are random variables. The probability density of the distribution varies along with the sample size. When the sample size changes, the probability density of [tex]$E^3$[/tex] also changes.
The probability distribution may be defined as the statistical expression which defines the likelihood of any outcome for the discrete random variable and it can be opposed to the continuous random variable.
In the context, when the size of the sample of the distribution size increases, it causes a decrease in the variance and so the distribution becomes highly concentrated around.
Can someone help me? it would be the world if u helped me and tysm for the people who helped me! <3
Answer:
54
Step-by-step explanation:
48 / 8 = 6
48 + 6 = 54
Answer:
They have 54 coins together.
Step-by-step explanation:
if you divide 48 by 8, then you get 6. you then add 6 to 48 and you get 54.
help me on this pls!!!
Answer:
20 ft
Step-by-step explanation:
By visual inspection, determine the best-fitting regression model for the
scatterplot.
10
-10
A. Linear
B. No pattern
so
ОООО
C. Quadratic
D. Exponential
Answer:
Option A linear is your answer ☺️☺️
The best-fitting regression model for the scatterplot is,
⇒ Linear
What is Equation of line?The equation of line in point-slope form passing through the points
(x₁ , y₁) and (x₂, y₂) with slope m is defined as;
⇒ y - y₁ = m (x - x₁)
Where, m = (y₂ - y₁) / (x₂ - x₁)
Given that;
Scatter plot is shown in image.
Now, We can see by the scatterplot,
The best-fitting regression model for the scatterplot is,
⇒ Linear
Thus, The best-fitting regression model for the scatterplot is,
⇒ Linear
Learn more about the equation of line visit:
https://brainly.com/question/18831322
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Function f is defined by f (x) = 1.5º. Function g is defined by g(x) = 500:c² + 3452
a. Which function is quadratic? Which one is exponential?
Fill in each blank with the correct choice.
The quadratic formula gives which roots for the equation 2x^2 + x - 6 = 0?
Answer:
The roots are [tex]x = (\frac{3}{2}, -2)[/tex], which is given by option C.
Step-by-step explanation:
Solving a quadratic equation:
Given a second order polynomial expressed by the following equation:
[tex]ax^{2} + bx + c, a\neq0[/tex].
This polynomial has roots [tex]x_{1}, x_{2}[/tex] such that [tex]ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})[/tex], given by the following formulas:
[tex]x_{1} = \frac{-b + \sqrt{\Delta}}{2*a}[/tex]
[tex]x_{2} = \frac{-b - \sqrt{\Delta}}{2*a}[/tex]
[tex]\Delta = b^{2} - 4ac[/tex]
In this question, we have that:
[tex]2x^2 + x - 6 = 0[/tex]
Which is a quadratic equation with [tex]a = 2, b = 1, c = -6[/tex]. So
[tex]\Delta = 1^{2} - 4*2(-6) = 1 + 48 = 49[/tex]
[tex]x_{1} = \frac{-1 + \sqrt{49}}{2*2} = \frac{6}{4} = \frac{3}{2}[/tex]
[tex]x_{2} = \frac{-1 - \sqrt{49}}{2*2} = \frac{-8}{4} = -2[/tex]
So the roots are [tex]x = (\frac{3}{2}, -2)[/tex], which is given by option C.
Which expression represents the average of three test scores?
Answer:
C) is the correct answer
Step-by-step explanation:
In order to find an average, you need to add x, y, and z and then divide them by 3 because there are 3 test scores, and x, y, and z represent the grades for each test. This is why C) x+y+z/3 is correct.
5х +3y — — 7
— 2 — 3 — 19
Answer:
Step-by-step explanation:
10. What value of x and y will make the polygon a
parallelogram?
Answer:
Step-by-step explanation:
20 = 5y
4=y
x+3y = 2(x+y-1)
x+3y = 2x +2y -2
x+3(4) = 2x + 2(4) -2
x +12 = 2x +8 -2
12-8+2 = 2x -x
6 =x
The values of x and y that makes the polygon a parallelogram is 6 and 4 respectively.
What is a parallelogram?A parallelogram is a special type of quadrilateral that has both pairs of opposite sides parallel and equal, and opposite angles equal.
Given is a polygon,
We know opposite sides of a parallelogram are equal,
Therefore,
5y = 20
y = 20/5
y = 4
And,
Putting y = 4, in x+3y = 2(x+y-1)
x+12 = 2(x+3)
x+12 = 2x+6
x = 12-6
x = 6
Hence, The values of x and y that makes the polygon a parallelogram is 6 and 4 respectively.
For more references on parallelograms, click;
https://brainly.com/question/19187448
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Which statement best describes the effects on the graph of f(x)=3x when f(x) is replaced by −3f(x+7)−2?
Answer: to move a graph up c units, add c to the whole function
so basicaly what you did is you subtraced 3 from the whole function
the whole graph shifts 3 units down
B is answer
Step-by-step explanation:
what is 10 times 500
who wants to speak
Answer: 5,000
Step-by-step explanation:
find the surface area of a square pyramid if the base area is 25 square inches and the area of each triangular side is 36 square inches
9514 1404 393
Answer:
169 square inches
Step-by-step explanation:
The surface consists of one square base and four triangles. So, the total surface area is ...
base area + 4 × triangle area = 25 in² + 4×36 in² = 169 in²
Which of the following is a Pythagorean triple?
A. (5, 5, 10)
O B. (3,4,6)
C. (6, 8, 10)
D. (10, 12, 15)
Answer:
its c
Step-by-step explanation:
1-2 (2x + 1) = 1 -(x-1 )
Answer:
1-4x-2=1-x+11-2-2=4x-x-3/3=3x/3x= -1Answer: X is equal to -1
Step-by-step explanation:
1-2(2X+1)=1-(X-1)
1-4X-2=1-X+1
-1-4X=2-X
-4X+X=2+1
-3X=3
X=-1
P.S. Could you please give me 'brainliest')))
A special truck cleans the surface of the ice rink shown. The figure is composed of a square and two semicircles.
85 ft
85 ft
D
If the truck cleans the entire surface, how many square feet of ice will the truck clean?
Use 3. 14 for 2. Round your answer to the nearest tenth.
The truck wil clean about
square feet of ice.
Answer:
12897 square feet
Step-by-step explanation:
So first find the area of the square:
85 * 85 = 7225
Then, the two semi circles together is a full circle. Use the circle area formula,
A = πr^2
The radius (r) would be half the diameter of the circle. The diameter of the circle would be 85. So half of that is 42.5. The radius is 42.5
Now:
A = π(42.5)^2
A = 3.14(42.5)^2
A = 3.14(1806.25)
A = 5671.625
Lastly, add the two areas up for the square and circle:
7225 + 5671.625 = 12896.625
Round to nearest tenth: 12897
For Brainliest please help Solve |x-5|=3
Step-by-step explanation:
x = 2 and 8
hope this helps
(−5g5h6)2(g4h2)4
i need the simplified answer asap plz
Answer:
-40g^{9}h^{8}
Step-by-step explanation:
Do the ratios 9/10 and 2/4 form a proportion?
Answer:
Do the ratios 9/10 and 2/4 form a proportion?anation:
Step-by-step expl
Answer:
no bestie
Step-by-step explanation:
I will give extra points please help
Answer:
You can use x as the variable. x≤1
Step-by-step explanation: