The expected value for the given experiment is:
E = -0.5
How to get the expected value?For an experiment with the possible events {x₁, x₂, ..., xₙ}, each with the correspondent probability {p₁, p₂, ..., pₙ}, the expected value is defined as:
E = x₁*p₁ + ... + xₙ*pₙ
In this case, all the probabilities are equal to 1/6 (assuming that the dice is fair), then we have:
E = (1/6)*(1 - 2 + 3 - 4 + 5 - 6) = (1/6)*(-3) = -0.5
We conclude that the expected value for the experiment is -0.5
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Answer:
B) -0.5
Step-by-step explanation:
What is the inverse of the function f(x) = x 3? h(x) = one-thirdx 3 h(x) = one-thirdx – 3 h(x) = x – 3 h(x) = x 3
The inverse of the function f(x) = [tex]x^{3}[/tex] is : [tex]\sqrt[3]{x}[/tex]
What is the inverse of a function?The inverse of a function is that function that acts to undo a given function.
Analysis:
if f(x) = x^{3}, then let y = [tex]x^{3}[/tex]
[tex]\sqrt[3]{y}[/tex] = [tex]\sqrt[3]{x^{3} }[/tex]
x = [tex]\sqrt[3]{y}[/tex]
Replace y with x
h(x) = [tex]\sqrt[3]{x}[/tex]
in conclusion, the inverse of h(x) = [tex]\sqrt[3]{x}[/tex]
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what is the opposite of -26? how many units away from 0 is its location on a horizontal number line,and in which direction ?
Find the length of XV for Rectangle WXYZ.
PLEASE HELP!!!!
Answer: 20.5
Step-by-step explanation:
What expression has a value of 13?
Answer:
The answer is A) 5^2 + (2 x 1) - 14
Step-by-step explanation:
Use PEMDAS ( Parentheses, Exponent, Multiply or Divide, Add or Subtract)
5^2 + (2 x 1) - 14
5^2 + 2 - 14 Do what's in the parentheses
25 + 2 - 14 Then you will do the exponent
27 - 14 Then you subtract
13
In an archery competition, each archer shoots 3 arrows at a target. An archer’s score is calculated by measuring each arrow’s distance from the center of the target and finding the mean. One archer has a mean distance of 1.6 inches and a MAD of 1.3 inches in the first round. In the second round, this same archer’s arrows are farther from the center but more consistent. What values for the mean and MAD would fit this description for the second round?
Answer:
Mean: 3 Mad: 1/3
Step-by-step explanation:
First we need to find out the numbers, so to get a mean of 3 we have to get to 9 ebcause there are 3 arrows.
We have to make sure that the arrows are not too close to the centerYou can have decimals2nd: Once you find the numbers which are 2.5, 3, and 3.5 you add them together and divide it by 3 to get 3 the mean
3rd: Find the MAD but adding .5 and .5 to get 1 then divide it by 3 and you get 1/3 as the MAD.
Hope this helps!
The archer's mean distance in the second round is 1.6 inches and the MAD is 0.83 inches.
What is a mean?It is the average value of the set given.
It is calculated as:
Mean = Sum of all the values of the set given / Number of values in the set
We have,
Let's first recall that MAD stands for Mean Absolute Deviation, which is a measure of the variability of a set of data.
The MAD is calculated by taking the absolute value of the difference between each data point and the mean, and then finding the average of those absolute values.
Let the mean distance of the archer's arrows in the second round be m, and let the MAD be d.
In the first round, the archer's mean distance was 1.6 inches and the MAD was 1.3 inches.
This means that the absolute difference between each arrow's distance from the mean was, on average, 1.3 inches.
In the second round, the archer's arrows were farther from the center, so we expect the mean distance to be larger than 1.6 inches.
However, the arrows were more consistent, so we expect the MAD to be smaller than 1.3 inches.
To find the new value for the mean distance, we can use the fact that the sum of the distances from the mean is equal to zero. This means that:
3(m - mean) = 0
Solving for m, we get:
m = mean
Therefore, the mean distance in the second round is equal to the mean distance in the first round, which is 1.6 inches.
To find the new value for the MAD, we can use the fact that the variance (the square of the standard deviation) is equal to the average of the squared differences between each data point and the mean.
This means that:
Var = (1/3)(d²)
Since the arrows in the second round are more consistent, we expect the variance to be smaller than in the first round.
Therefore, we can set the new variance to be some fraction f of the old variance, and solve for the new value of d:
f(Var) = (1/3)(d²)
d² = 3f(Var)
d = √(3f(Var))
We don't know the exact value of f, but we do know that it is less than 1 since the variance is decreasing.
Let's assume that f = 0.5 for simplicity.
Using this value of f and the given values for the mean and MAD in the first round, we get:
Var = (1/3)(1.3³) = 0.56
d = sqrt(30.50.56) = 0.83
Therefore,
The archer's mean distance in the second round is 1.6 inches and the MAD is 0.83 inches.
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what is 123456x123456
Answer:
Well if you really want to know, it's 15241383936.
Hope this helps
Hairs was asked to evaluate the algebraic expression-3x + 6 when x=-7. 5
Answer:
28.5
Step-by-step explanation:
substitute x = - 7.5 into the expression
- 3(- 7.5) + 6 = 22.5 + 6 = 28.5
Different formulas are used to find the areas of different types of triangles.
True
or
False
Answer:
true
Step-by-step explanation:
Answer:
True
Step-by-step explanation:
Depending on the angles, the size, and the form of the triangle the formula can change.
See your levels
A string of lights 4 yards long costs $9.48. What is the price per foot?
Hint: There are 3 feet in 1 yard.
$
Submit
Answer:
$0.79
Step-by-step explanation:
4 x 3 = 12
9.48/12 = 0.79
Hope this helppsssssssssssssssssssssssssssssssssssssssssssssss
(Help me pls as soon as possible this is due today!!!)
1. There are 20 goldfish and 30 minnows in the pond. What is the ratio of minnows to goldfish?
2. There are 15 quarters and 10 dimes in the jar. What is the ratio of quarters to dimes?
3. There are 50 stamps and 60 envelopes. What is the ratio of envelopes to stamps?
4. The store has 60 goggles and 20 flippers. What is the ratio of flippers to goggles?
5. The scale of a dinosaur mural is 1 foot for every 30 feet. If you want to draw a 90-foot dinosaur, how many feet long must it be?
6. Larry answered 8 out of every 10 questions on a test correctly. The test had 70 questions. How many correct answers did Larry give?
1) 3:2
2) 3:2
3) 6:5
4)1:3
5) 3 feet
6) 56 correct answers
Find the equation of the line that passes through the points (12, 9) and (2,7)
Answer:
see photo below for analysis
Step-by-step explanation:
A bucket can hold a total of 5 gallons. If the bucket is 45% full, how much water is in the bucket?
The question is an illustration of volume, and the amount of water in the bucket at 45% full is 2.25 gallons
How to determine the amount of water?The capacity of the bucket is given as:
Bucket = 5 gallons
At 45% full, we have:
Capacity = 45% * 5 gallons
Evaluate the product
Capacity = 2.25 gallons
Hence, the amount of water in the bucket at 45% full is 2.25 gallons
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Given F(-7,8), G(-4,6), H(1,3), and
I(x,9). Find x such that FG I HI.
Answer:
(8,-4), (3,X)
Step-by-step explanation:
in 1965, the population of country A was 2 714 000. in 2015 the population was 3 663 900. write the population in 2015 correct to 3 significant figures?
BEST ANSWER :
(iv) a) 3.66 × 10^6
b) 2.714 × 10^6
(iii) 35%.
by question known :
(i) a) 3663900 = 3.6639 × 10^6
= 3.66 × 10^6
{ keep three significant digit }
b) 2714000 = 2.714 × 10^6
(iii) (3663900 - 2714000) ÷ 2714000 × 100%
= 949900 = 2714000 × 100%
= 0.35 × 100%
=35%
.°. the percentage increase in the population from 1965 to 2015 is 35%
i need helpppppp!!!!
Answer:
The first one
Step-by-step explanation:
neritic zone, shallow marine environment extending from mean low water down to 200-metre (660-foot) depths, generally corresponding to the continental shelf. Neritic waters are penetrated by varying amounts of sunlight, which permits photosynthesis by both planktonic and bottom-dwelling organisms.
Rewrite the expression with rational exponents as a radical expression.
7 times x to the two thirds power
Answer:
[tex]7 \sqrt[3]{2} [/tex]
1. You want to buy one drink and some tacos. A drink
costs $2.25 and tacos cost $1.75. You have $10. Write
an inequality. How many tacos can you buy?
2
is
N/2+5=3
Two step equations solve step by step
Solving the equation:-
[tex] \frac{N}{2} + 5 = 3 \\ \frac{N}{2} = 3 - 5 \\ \frac{N}{2} = ( - 2) \\ N = - 2 \times 2 \\ N = ( - 4) [/tex]
White the equation of the circle with center -7,4 and diameter 12
Answer: (x -4)^2 +(y -7)^2 = 36
Step-by-step explanation: The equation of a circle with radius r and center at (h, k) is ...
(x -h)^2 +(y -k)^2 = r^2
When the diameter is 12, the radius is 6 (half the diameter). Then for your center point, the equation is ...
(x -4)^2 +(y -7)^2 = 36
The measure of AB is 126º. What is the measure of ABC, the tangent- chord angle?
Ans: B 63 degree
Step-by-step explanation:
Chord
to find the chord
1/2 or either 0.5
0.5 x 126 = 63
Mark me as Brainliest
Ty , hope it helped
Answer:
B
Step-by-step explanation:
is is correct 63 degrees , Hope this helps !!
A game has a spinner with 8 equal- sized sections. The results of 450 spins are shown in the table. Part Frequency 1 58 2 52 3 39 4 77 5 50 6 43 7 60 8 71
For which number is the experimental probability closest to the theoretical probability
Using it's concept, it is found that the experimental probability is closest to the theoretical probability for number 1.
What is a probability?A probability is given by the number of desired outcomes divided by the number of total outcomes.
The theoretical probability is calculated before any experiments, while the experimental probability is calculated after experiments.
Considering that the sections are equal-sized, the expected frequency for each section is given by:
Ef = 450/8 = 56.25.
The closest frequency to 56.25 is of 58, associated with number 1, which is the one that has the closest probabilities.
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Evaluate. 33 + ( 2 3 )2 A) 9 4 9 B) 9 2 3 C) 27 2 3 D) 27 4 9
Answer:
B
Step-by-step explanation:
9 2 3
What is the value of X?
the figure is a triangle
given angle: 52º
missing angle 1: (15x + 3)º
missing angle 2: (3x - 1) º
Answer:
just know total angle sum is 180°
Step-by-step explanation:
[tex]52 + (15x + 3) + (3x - 1) = 180 \\ 52 + 3 - 1 + 15x + 3x = 180 \\ 54 + 18x = 180 \\ 18x = 180 - 54 \\ 18x = 126 \\ x = 7[/tex]
but give me a brainliest
Answer:
x = 7
Step-by-step explanation:
→ Find the sum of the angles
52 + 15x + 3 + 3x - 1 = 18x + 54
→ Wquate the expression to 180
18x + 54 = 180
→ Solve for x
x = 7
Ally rolls an octahedron-shaped (8-sided) die with the number 1, 2, 3, 4, 5, 6, 7, or 8 on each face. What is the probability of getting either a 1 or 8?
25%
50%
75%
45%
Answer:
25%
Step-by-step explanation:
Help me with this please giving brainlist
Answer: 6 pounds is the mode
Step-by-step explanation: 6 is the most common number
please help!! hurry! thank you
Answer:
108 degrees
Hope this helps!!
Help please!!
I can’t figure this out
Check the picture below.
so the prism is a "right square" prism, namely it has only right-angles and two of its faces are a square, namely the front and back. We know it has a surface are of 220 cm², so let's check what the width "w" is first.
[tex]\stackrel{\textit{\huge surface area}}{\stackrel{\textit{front and back}}{2(5)(5)}~~ + ~~\stackrel{\textit{left and right}}{2(5)(w)}~~ + ~~\stackrel{\textit{top and bottom}}{2(5)(w)}}~~ = ~~\stackrel{cm^2}{\textit{\Large 220}} \\\\\\ 50~~ + ~~10w~~ + ~~10w~~ = ~~220\implies 50+20w=220\implies 20w=170 \\\\\\ w=\cfrac{170}{20}\implies w=\cfrac{17}{2} \\\\[-0.35em] ~\dotfill[/tex]
[tex]\stackrel{\textit{\huge volume}}{\stackrel{length}{(5)}~~\stackrel{height}{(5)}~~\stackrel{width}{\left( \cfrac{17}{2}\right)}}\implies \cfrac{425}{2}\implies 212.5[/tex]
Barry ran a total of 40 miles over the course of 5 track practices. how many track practices would it take for barry to run 48 miles?
Whats 793861 x 672540 =
Help pls
Answer:
533903276940
Step-by-step explanation:
easy
Answer:
533,903,276,940
Step-by-step explanation:
Have a nice day/night!
HELP ME PLS IM THIS CLOSE TO LOOSING ALL OF MY SANITY
Answer:
INSPIRING
Step-by-step explanation:
If the sum of the squares of the two shorter sides of a triangle is greater than the square of the longest side, the triangle is acute. However, if the sum of the squares of the two shorter sides of a triangle is smaller than the square of the longest side, the triangle is obtuse. And if the sides satisfy the Pythagorean theorem, it is a right triangle.
