D.0.125
What is probability?
Probability refers to potential. A random event's occurrence is the subject of this area of mathematics. The range of the value is 0 to 1.
Mathematics has incorporated probability to forecast the likelihood of various events. The degree to which something is likely to happen is basically what probability means.
You will understand the potential outcomes for a random experiment using this fundamental theory of probability, which is also applied to the probability distribution. Knowing the total number of outcomes is necessary before we can calculate the likelihood that a specific event will occur.
Step by Step Exlaination:
A spinner is divided into 8 parts.
Numbered as 9 to 16.
S={9,10,11,12,13,14,15,16}
n(S)=8.
A:probability of getting reater than 15.
A={16}
m(A)=1
p(A)=m(A)/n(S).
= 1/8.
=0.125
p(A)=0.125
Probability of getting greater than 15 is 0.125
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2x + 3y= 7
-2x+4y=14
Answer: (- 1, 3 )
Step-by-step explanation:
Kristen's dry cleaning fee was $32.75 for 5 pairs of pants.
What is the unit price?
$0.65 per pair of pants
$5.00 per pair of pants
$6.55 per pair of pants
$32.75 per pair of pants
The unit price is $6.55 per pair of pants
How to calculate the unit price of the pants?
Kristen's dry cleaning charge a fee of $32.75 for 5 pairs of pants
The unit price of the pants can be calculated as follows
32.75= 5
x= 1
Cross multiply both sides
5x= 32.75
x= 32.75/5
x= 6.55
Hence the unit price of the pants is $6.55
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The unit price for the cleaning fee is $6.55 per pair of pants
What is an equation?An equation shows the relationship between numbers and variables in an expression.
Unit rate is the ratio of two quantities. The denominator of a unit rate is always equal to one.
Kristen's dry cleaning fee was $32.75 for 5 pairs of pants. Hence:
Unit price = total cleaning fee / number of pants
Substituting values gives:
Unit price = $32.75/5 pairs of pants = $6.55 per pair of pants
The Unit price is $6.55 per pair of pants
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Students in a school are asked to pick either football, rugby or tennis to play in their lesson. The number of students who picked football and rugby are in the ratio of 3:2 The number of students who picked rugby and tennis are in the ratio of 8:17 51 students picked tennis. Work out how many students picked football
The number of students who chose football exists 38.5.
What is meant by ratios?A ratio is a tool for comparing like-kind quantities or illustrating relationships between them. To compare similar items, we employ ratios.
It's crucial to keep in mind that the ratio of one value to another is the same as the real value in relation to the other when calculating values using supplied ratios.
The percentage of students that chose rugby and tennis is listed as 8:17, which means that out of every 25 students (8 + 17), 8 chose rugby and 17 chose tennis. The ratio of 17 would now be replaced by the value 51 as the total number of students who picked tennis was 51. Although we do not yet know the total number of people that choose rugby, we can draw down an equation as shown below;
17/25 = t/x
Where t is the number of tennis players as represented by ratio 17 and x is the total number of both tennis and rugby players as represented by 25.
By cross multiplication we now have
17 × x = 25 × 51
x = (25 × 51)/17
Simplifying the above equation, we get
17x = 1275
x = 75
If 84 students participate in both rugby and tennis, but only 57 of them play tennis, the number of rugby players is calculated as follows.
Let the equation be r = x - t
simplifying the equation, we get
r = 75 - 51
r = 24
Given that 25 students participated in rugby and that the proportion of football players to rugby players is 3:2, the relationship can be mathematically stated as follows;
3/5 = r/y
Where r is the total number of rugby players and y is the total number of both football and rugby players
2/5 = 25/y
By cross multiplication you now have
y = 62.5
If the total number of football and rugby players is 63 and out of these 27 play rugby only, then the number of football players is derived as;
f = y - r
f = 62.5 - 24
f = 38.5
Therefore the number of students who chose football is 38.5.
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Rebekah and Mohammad have $125 saved up already with their clothing business. For every shirt they sell, they make $12 and for every hat they make $9. How many of each did they sell if they sold 22 pieces of clothing and their total saved at the end of the day is $350, including the savings they started with?
Rebecca and Mohammed sold 16 shirts and 6 hats.
How to evaluate for each number of shirt and hats soldTo solve this problem, we can write an equation on the information provided. Let x be the number of shirts sold and y be the number of hats sold. Such that:
x + y = 22 {the total number of pieces sold}
12x + 9y = 350 - 125 {the total profit, including the savings they started with}
We can solve for one variable in terms of the other using the first equation:
x = 22 - y
Then we can substitute this expression into the second equation:
12(22 - y) + 9y = 350 - 125
Simplifying this equation:
264 - 12y + 9y = 350 - 125
y = 6
Therefore, Rebecca and Mohammed sold 6 hats and 16 shirts
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What is the function f/x )= x2 called?
The function f(x) = x² is called as the quadratic function.
In math the term function is called as the relation between a set of inputs and a set of permissible outputs with the property that each input is related to exactly one output.
Here we need to identify the function type of the given function f(x) = x².
As we all know that the polynomial function with one or more variables in which the highest exponent of the variable is two is known as quadratic function.
The general form of the quadratic function is written as,
=> f(x) = ax² + bx + c
where the value of a ≠ 0.
Based on the general form we have identified that the given function
=> f(x) = x²
is known as the quadratic function.
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F(x) = - square root of x—5+10
To find the domain of the function F(x) = - √x—5 +10, we need to find the set of x-values for which the expression inside the square root is defined. The expression inside the square root is x - 5. For the square root of a real number to be defined, that number must be non-negative, so x - 5 ≥ 0, or x ≥ 5. Therefore, the domain of the function is x ≥ 5.
What is an example of a domain and range?
Think about the relationship (0,7,0,8,(1,7,(1,8,(1,9),(2,10)). The relation is shown in this case as a set of sorted pairs. The set of x -coordinates, 0, 1, and 2, and the set of y -coordinates, 7, 8, 9, and 10, define the domain and range, respectively.
To find the range of the function F(x) = - √x—5 +10, we need to find the set of y-values that the function can output. The function starts with the square root of x-5, which is always non-negative, and then subtracts it from -5 and adds 10. Therefore, the range of the function is all real numbers y, such that y ≥ 10.
So the domain of the function F(x) = - √x—5 +10 is x ≥ 5 and the range of the function is y ≥ 10.
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Identify the graph that displays the altitude of a skydiver as he is taken up in a plane and then jumps. a. A graph has time on the x-axis and altitude on the y-axis. A line increases, is horizontal, and then decreases. c. A graph has time on the x-axis and altitude on the y-axis. A line increases slowly and then decreases rapidly. b. A graph has time on the x-axis and altitude on the y-axis. A line is horizontal and then decreases. d. A graph has time on the x-axis and altitude on the y-axis. A line increases, is horizontal, increases, and then decreases rapidly.
The graph that displays the altitude of a skydiver as he is taken up in a plane and then jumps:
A graph has time on the x-axis and altitude on the y-axis.
The correct option is A.
What is graph?In mathematics, a graph is a visual representation or diagram that shows facts or values in an ordered way.
The relationships between two or more items are frequently represented by the points on a graph.
Given:
We have a graph.
The graph is given in the attached image.
From the graph;
A graph has time on the x-axis and altitude on the y-axis.
Therefore, x-axis shows the time and y-axis shows altitude.
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Help please will mark brainlist
Answer:
60, pi/2, 2pi
Step-by-step explanation:
Q4: pi/3 * 180/pi = 180/3 = 60 degrees
Q5: 90/1 * pi/180 = pi/2 = 1.5708
Q6: The formula of the central angle is theta = S/r
so it is 2pi.
Describe the parts of this algebraic expression using the lesson’s vocabulary and simplfy
Negative x + 10.2 minus one-half x + y
Answer:
In this algebraic expression, "Negative x" represents a term with a coefficient of -1, and "x" represents a variable. "10.2" represents a constant term. The "+" sign represents addition.
Step-by-step explanation:
"minus one-half x" represents a term with a coefficient of -0.5 and variable "x". "+ y" represents a term with variable "y" and a coefficient of 1.
Simplifying the expression by combining like terms:
-x - 0.5x = -1.5x
Negative x + 10.2 - one-half x + y = 10.2 - 1.5x + y
HELP SOLVE I AM BEING TIMED
The conclusion sum of the measures of the angles 4, 5 and 11 is equal to 180 degrees not be accurate to the drawing.
What is Triangle?A triangle is a three-sided polygon that consists of three edges and three vertices.
Supplementary angles are those angles that sum up to 180 degrees
so angle 1 and 4 are supplementary angles.
Congruent angles are two or more angles that are identical to each other
so angles 10 and 1 are congruent.
angles 5 and 7 are congruent.
The three interior angles of a triangle will always have a sum of 180°.
The sum of the measures of the angles 4, 5 and 10 is equal to 180 degrees.
The sum of the measures of the angles 4, 5 and 11 is not equal to 180 degrees.
Hence, the conclusion sum of the measures of the angles 4, 5 and 11 is equal to 180 degrees not be accurate to the drawing.
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Which of the following is the value of k,if one root of the quadratic equation X2+kx-8=0 is-4?
The value of k if one root of the quadratic equation x²+kx-8=0 is-4 is 2.
The equation x^2+kx-8=0 is a quadratic equation and of the form
ax^2 + bx + c ;where a =1 , b=k and c= -8.
Now, we know that the sum of the roots of a quadratic equation = -b/a
and the product of the roots is = c/a.
Now, let the other root of this equation be y.
Then , by above properties,
(-4) + y = -k/1 =-k ..... (1)
And, (-4)y = -8/1=-8....(2)
From 2, we get y = 2.
Putting this value in (1), we get -
(-4) + 2=-k
So, k = 2.
Thus, if one of the roots of this equation -4 , then the other root must be 2 and so , the value of k is 2.
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The complete question is:
Which of the following is the value of k,if one root of the quadratic equation X2+kx-8=0 is-4? a) 0 b) 4 c) 0 or 4 b) 2
) 10 labeled balls are placed into 20 labeled bins (with each placement equally likely). what is the probability that bin 1 contains exactly 3 balls?
The probability that bin 1 contains exactly 3 balls would be 0.015. Probabilities can be expressed as fractions, decimals, or percentages, and they can be used to make predictions or to quantify uncertainty.
Probability is a measure of the likelihood of an event occurring. It is a number between 0 and 1, with 0 indicating that an event is impossible and 1 indicating that an event is certain. For example, if the probability of it raining tomorrow is 0.3, it means that there is a 30% chance of it raining tomorrow. In addition, probability theory is a branch of mathematics that studies the probability of events, and it plays an important role in many areas such as statistics, finance, and science.
The probability that bin 1 contains exactly 3 balls out of the 10 balls placed is given by the binomial probability mass function with parameters n = 10 and k = 3, and probability of success p = 1/20. Therefore, the probability is given by:
(10 choose 3) * [tex](1/20)^3[/tex] * [tex](19/20)^7[/tex] = 120 * (1/8000) * [tex](19/20)^7[/tex] = 120/8000 = 0.015
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what is the answer?
4x+3y=19
-3x+y=2
The solution set for the given system of equations is (1, 5).
What is a system of equations?In mathematics, a set of simultaneous equations, also known as a system of equations or an equation system, is a finite set of equations for which common solutions are soughtIn mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.Given is the system of equations as -
4x + 3y = 19
- 3x + y =2
The given system of equations is -
4x + 3y = 19
- 3x + y =2
Now, we can write -
- 3x + y = 2
y = 2 + 3x
Then, the equation 4x + 3y = 19, will become -
4x + 3(2 + 3x) = 19
4x + 6 + 9x = 19
13x = 13
x = 1
Then, the value of {y} will be -
y =2 + 3
y = 5
Therefore, the solution set for the given system of equations is (1, 5).
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the widget store owner tells you that 200 customers arrive and purchase a widget from the store each day. assuming you must sell 30 of your widgets to cover the transportation costs, and given the probability you calculated in question 1, use a binomial distribution to estimate the probability of at least covering the transportation costs (that is, the probability of selling at least 30 widgets). write your answer as a probability (not a percent) rounded to 4 decimals.
The probability of selling at least 30 widgets is 0.0468.
The problem is asking us to use a binomial distribution to estimate the probability of selling at least 30 widgets given the information provided.
A binomial distribution is a probability distribution of the number of successes in a fixed number of trials.
Where n = 200 (number of customers arriving and purchasing a widget from the store each day) and
p = 0.1667 ( probability of a customer buying a widget)
We are looking for the probability of selling at least 30 widgets, which is equivalent to finding the probability of selling 30 or more widgets.
This can be calculated using the cumulative probability formula for a binomial distribution:
P(X >= 30) = 1 - P(X < 30) = 1 - Σ (nCx)(p^x)(1-p)^(n-x) from x=0 to 29
We can use a calculator or a software to calculate this probability. The result is 0.0468 rounded to 4 decimals.
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1. Find the values of x and y.
a.
b.
(3x + 18)°
(5y+68)°
(3y+96)°
x = 8, y = 2
x = 20, y = 2
(5x+2)°
fal
C. x = 8, y = 14
x = 20, y = 14
d.
Answer:
c
Step-by-step explanation:
(5x + 2) and (3x + 18) are vertically opposite angles and are congruent, so
5x + 2 = 3x + 18 ( subtract 3x from both sides )
2x + 2 = 18 ( subtract 2 from both sides )
2x = 16 ( divide both sides by 2 )
x = 8
Similarly
(5y + 68) and (3y + 96) are vertically opposite angles and are congruent, so
5y + 68 = 3y + 96 ( subtract 3y from both sides )
2y + 68 = 96 ( subtract 68 from both sides )
2y = 28 ( divide both sides by 2 )
y = 14
Solving for x: 6x + 12 = 2y
Answer: (y-6)/3
Step-by-step explanation:
6x = 2y - 12
x = (2y - 12)/6 = (y-6)/3
(I can only put x in terms of y because you only provided one equation)
Please help its finals
The number of students who liked cake batter frozen yogurt is 135.
What is the percentage?A percentage is a value per hundredth. Percentages can be converted into decimals and fractions by dividing the percentage value by a hundred.
From the given diagram the sum of all the percentages except the Cake batter is (28.5 + 21.5 + 13 + 10)% = 73%.
Therefore, The percentage of students who liked Cake batter is,
= (100 - 73)%.
= 27%.
So, The number of students who liked cake batter is,
(27/100)×500.
= 27×5.
= 135.
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Sam and harry are family. Sam is currently three times harry's age. Sam's age is also 10 more than twice harry's age. The following system of equations models this scenario: x = 3y x = 10 + 2y what are their current ages?.
The current age of Sam is 30 years and Harry is 10 years.
Equations are mathematical statements containing two algebraic expressions on both sides of an 'equal to (=)' sign. It shows the relationship of equality between the expression written on the left side with the expression written on the right side. In every equation in math, we have, L.H.S = R.H.S (left hand side = right hand side). Equations can be solved to find the value of an unknown variable representing an unknown quantity. If there is no 'equal to' symbol in the statement, it means it is not an equation. It will be considered as an expression.
Let Sam's age be y years and Harry's age be x years.
Sam is currently three times harry's age.
The equation formed: y = 3x
Sam's age is also 10 more than twice harry's age.
The equation formed: y = 2x + 10
Substitute the value of y from first equation in second equation:
3x = 2x + 10
x = 10
Put the value of x in first equation:
y = 3x = 3*10 = 30
Thus, the current age of Sam is 30 years and Harry is 10 years.
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Determine which is the better buy.
9 straps for $20.25 or 30 straps for $66.00. Please help
Answer: 30 straps for 66 is better
Step-by-step explanation:
If its 9 straps for 20.25, then one strap costs 2.25
If its 30 traps for 66, one strap costs 2.2
Therefore, if you buy 30 straps for 66, its a better buy.
Answer:
1. 2.25
2. 2.20
3. 1.02
4. 30 straps
Step-by-step explanation:
1. Divide 20.25 by 9
2. Divide 66 by 30
3. Divide 2.25 by 2.20
A triangle has an angle that measures 85°. The other two angles are in a ratio of 3:16. What are the measures of those two angles?
Answer:
15, 80
Step-by-step explanation:
Angle of triangle=180 degrees
180-85=95
3x+16x=95
19x=95
x=95/19
x=5
3x=15
16x=80
Determine whether the underlined value is a parameter or a statistic.:
Following the election comma Modifying 18 % with underline of the governors of all 50 areas of a country were female. nothing nothing nothing
Is the value a parameter or a statistic?
A.The value is a parameter because the governors of all 50 area of a country nothingare a population.
B.The value is a statistic because the governors of all 50 area of a country nothingare a population.
C.The value is a statistic because the governors of all 50 area of a country nothingare a sample.
D. The value is a parameter because the governors of all 50 area of a country nothingare a sample.
The election comma Modifying 18 % with underline of the governors of all 50 areas of a country were female.
Based on this, thr correct answer is A. The value is a parameter because the governors of all 50 area of a country nothing are a population.
Parameters definitionParameter is a term that comes from the Greek, namely para which means beside, and metron which means size. In general, a parameter is any characteristic that can help in defining and classifying a particular system (an event, project, object, situation, etc.). This means, parameters are system elements that are useful or critical, when identifying a system, or when evaluating its performance, status, condition, etc.
Parameter is a term that refers to a size or benchmark. parameter is the size of the entire population in the study which must be estimated from that contained in the sample. Parameter is a benchmark for a value with conditions that are expected to be achieved and can be one of the conditions for achieving goals.
As previously mentioned, parameters have more specific meanings in various disciplines, such as mathematics, computer programming, engineering, statistics, logic, linguistics, to electronic music composition. Apart from being used in technical uses, there are also extended uses, especially in non-scientific contexts, where the term is used to mean a characteristic or limitation, as in the phrases 'test parameters' or 'game parameters'.
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QUICK NEED WITH WITHIN 5 MINUTES BRAINLIEST WILL BE GIVEN
simplify: cube root of 8x^6 y^12
Answer: C
Step-by-step explanation:
cube root of 8x^6y^12
equals 2x^2y^4
Forming Triangles with Different Side Lengths
Explore forming triangles with different combinations of side lengths.
✓ 1. Try to form a triangle by dragging
points A and D. Is it possible to form a
triangle with side lengths 1, 5, and 3
units? no
see picture for the rest
Yes, it is possible to form a triangle with side lengths 3, 4 and 5 units and we can form a right triangle.
What is a triangle?A triangle is a three-sided polygon, which has three vertices. The three sides are connected with each other end to end at a point, which forms the angles of the triangle. The sum of all three angles of the triangle is equal to 180 degrees.
Given that, a triangle with side lengths 1, 5 and 3 units
The properties of the triangle are:
The sum of the length of the two sides of a triangle is greater than the length of the third side.In the same way, the difference between the two sides of a triangle is less than the length of the third side.1) Here, 5-1>3
No, we can not form a triangle with 1, 5 and 3.
2) A triangle with side lengths 3, 4 and 5 units
Here, 5-3<4
It is possible to form a triangle.
Now, c²=a²+b²
5²=3²+4²
25+25
With side lengths 3, 4 and 5 units right angle triangle can be formed.
Yes, it is possible to form a triangle with side lengths 3, 4 and 5 units and we can form a right triangle.
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what is the value of X??
will mark brainliest
Answer: The value of x is 43 degrees
select the statement(s) that highlight the key difference(s) between bagging and random forest a) bagging considers all the features to decide the best split while random forest generally selects only a subset of features. b) bagging can have any number of estimators while random forest can not have any number of estimators. c) bagging can take logistic regression as its base estimator while random forest can only have a decision tree as its base estimator. d) bagging selects only a subset of features to decide the best split while random forest considers all the features to decide the best split.
An ensemble approach called bagging combines the predictions from all models after fitting each one to a distinct portion of a training dataset.
what is standard deviation ?When the standard deviation is low, the data tend to cluster around the mean; when it is large, the data are more spread. Calculated using the standard deviation, the data's divergence from the mean value is determined. It is useful for contrasting data sets with possibly the same mean but a distinct range. For instance, the mean of the two following numbers is the same: 15, 15, 15, 14, 16 and 2, 7, 14, 22, 30. But it's clear that the second is more diffused. The standard deviation shows how erratic the data is. It conveys the difference between each observed value and its mean.
given
An variation of bagging called random forest additionally randomly chooses the subsets of features that are applied to each data sample.
With the addition of splitting on a random subset of characteristics, random forest outperforms bagging by decorrelating the trees.
As a result, the model only takes into account a small subset of its properties at each branch in the tree rather than all of them.
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Choose the expression that is equivalent to
(9^-3/3^-2x9^2)^3
-3^6/-9^15
-3^2/-9^5
3^6/9^15
3^2/9^5
The equivalent expression to the given expression is 3⁶/9¹⁵.
Equivalent Expressions:A mathematical expression made up of variables, coefficients, constants, and operations like addition, subtraction, multiplication, and division is called an algebraic expression.
Equivalent expressions in mathematics are those that hold true even when they appear to be different. However, both forms provide the same outcome when the values are entered into the formula.
Here we have
=> [tex][ \frac{9^{-3} }{ 3^{-2} 9^{2} } ]^{3}[/tex]
We can solve the above expression as follows
=> [tex][ {9^{-3} \times3^{2} \times 9^{-2} ]^{3}[/tex]
=> [tex][ {9^{-5} \times3^{2} ]^{3}[/tex]
=> [tex][ {9^{-15} \times3^{6} ][/tex]
=> [tex]\frac{ 3^{6}}{9^{15} }[/tex]
Therefore,
The equivalent expression to the given expression is 3⁶/9¹⁵.
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Probability selecting a number divisible by a 1000
the first term of a geometric sequence is 15, and the 5th term of the sequence is 243125. what are the geometric means between these terms? enter your
Answer:
The geometric sequence is 15, 9, 27/5, 81/25, 243/125
Step-by-step explanation:
After renovations in the gym were finished, Coach Murphy decided to paint the school colors on the wall behind the bleachers. The wall is 120 feet wide, and he plans to paint stripes that are 1.5 feet wide.
Let s represent how many stripes Coach Murphy will paint. Which equation models the problem?
The equation that models the problem is given as follows:
s = 120/1.5.
What is a proportional relationship?A proportional relationship is defined as follows:
y = kx.
In which k is the constant of proportionality.
For this problem, the variables are given as follows:
y = 120 = total width of the wall.k = 1.5 = length of each stripe painted.x = s = number of stripes painted.Hence the equation used to obtain the number of stripes that Murphy will paint is given as follows:
1.5s = 120
s = 120/1.5
s = 80. (solution).
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sinx - cosx = 1 ; solve the equation on the interval [tex]0\leq x\ \textless \ 2\pi[/tex]
Please show all work.
The solution of the equation in the interval [0, 2π] is π or 180.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
A mathematical equation is a statement with two equal sides and an equal sign in between. An equation is, for instance, 4 + 6 = 10. Both 4 + 6 and 10 can be seen on the left and right sides of the equal sign, respectively.
Given the equation;
Sinx = cosx + 1
Then Square both sides of the equation;
Sin²x = (cos x + 1)²
Sin²x = cos²x + 2cos x + 1
Since Sin²x = 1 - cos²x
1 - cos²x = cos²x + 2cos x + 1
Collect like terms;
1-1-cos²x-cos²x-2cos x = 0
-2cos²x-2cos x = 0
-2cos²x = 2cos x
-cosx = 1
cos x = -1
x = 180 degrees
Hence, the value of x = π
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