The first possible date on which she will complete 25 hours of exercise for the year is on March 1.
How to calculate date?In general, dates can refer to a specific day on the calendar, such as January 1 or December 31. Dates can also refer to a specific point in time, such as a specific hour, minute, or second. In some cases, dates can also refer to a specific period of time, such as a year, month, or week.
Since Nora plans to do a 45-minute workout four times a week,
she will exercise for a total of 4 * 45 minutes = 180 minutes per week.
This means that each week, she will exercise for a total of 180 / 60 = 3 hours.
To complete 25 hours of exercise for the year,
Nora will need to exercise for a total of 25 / 3 = 8.3 weeks.
The first possible date on which she will complete 25 hours of exercise is therefore 8.3 weeks after Jan 1,
Which is approximately 8.3 * 7 = 58 days after Jan 1.
Therefore, the first possible date on which Nora will complete 25 hours of exercise is 58 days after Jan 1, which is on March 1.
Overall, if Nora sticks to her New Year's resolution to exercise four times a week, the first possible date on which she will complete 25 hours of exercise for the year is on March 1.
To learn more about time refer :
brainly.com/question/1933707
#SPJ1
Q2) A company is evaluating the extension of credit to a new group of customers.
Although these customers will provide $180,000 in additional credit sales, 12% are likely
to be uncollectible. The company will also incur $16,200 in additional collection
expense. Production and marketing costs represent 72% of sales. The firm is in a 34% tax
bracket and has a receivables turnover of four times. No other asset buildup will be
required to service the new customers. The firm has a 10% desired return.
has a
a. Calculate the incremental income after taxes and the return on incremental
investment. Should the company extend credit to these customers?
b. Based on the income level determined in (a), should credit be extended if an
additional investment in inventory is considered? Assume an inventory turnover
of 1.6 times.
Answer:
Step-by-step explanation:
a. To calculate the incremental income after taxes, we need to determine the incremental costs and revenues associated with extending credit to the new customers. The additional credit sales will generate $180,000 in revenue, but we need to subtract the expected uncollectible amount of 12% * $180,000 = $21,600. The net additional credit sales will be $180,000 - $21,600 = $158,400.
The production and marketing costs will be 72% * $180,000 = $129,600. The total incremental costs will be $129,600 + $16,200 (collection expense) = $145,800.
The incremental income before taxes will be $158,400 - $145,800 = $12,600. The income tax will be 34% * $12,600 = $4,284. The incremental income after taxes will be $12,600 - $4,284 = $8,316.
To calculate the return on incremental investment, we need to determine the incremental investment required to extend credit to the new customers. Since no additional investment in assets is required, the incremental investment will be equal to the incremental costs of $145,800. The return on incremental investment will be $8,316 / $145,800 = 5.7%.
Based on the return on incremental investment of 5.7%, the company should not extend credit to the new customers, as it is below the desired return of 10%.
b. If an additional investment in inventory is required to extend credit to the new customers, we will need to recalculate the incremental income after taking into account the additional investment. If the additional investment in inventory is $x, the incremental investment will be $145,800 + $x. The incremental income before taxes will be $158,400 - ($129,600 + $16,200 + $x) = $12,600 - $x. The income tax will be 34% * ($12,600 - $x) = $4,284 - $x * 0.34. The incremental income after taxes will be ($12,600 - $x) - ($4,284 - $x * 0.34) = $8,316 - $x * 0.34.
To determine whether credit should be extended, we need to compare the return on incremental investment to the desired return of 10%. The return on incremental investment will be ($8,316 - $x * 0.34) / ($145,800 + $x). Setting this equal to the desired return of 10% and solving for x, we find that the additional investment in inventory cannot exceed $24,764 for the company to meet its desired return. If the additional investment in inventory is less than or equal to $24,764, the company should extend credit to the new customers. If it is greater than $24,764, the company should not extend credit to the new customers.
A local little league has a total of 70 players, of whom 40% are right-handed. How many
right-handed players are there? HELP
The number of right-handed players in the local little league given its percentage is 28
How many right-handed players are there?Based on the given task content; the number of right-handed players there can be determined by solving the percentage of right-handed players.
Total number of players in the local little league = 70Percentage of right-handed players = 40%Number of right-handed players = Percentage of right-handed players × Total number of players in the local little league
= 40% × 70
= 40/100 × 70
= 0.4 × 70
= 28
In conclusion, the total number of right-handed players is 28
Read more on Percentage:
https://brainly.com/question/843074
#SPJ1
Help!!! It doesn’t give the isosceles congruent angles??
Answer: y = 11 , x =3
Step-by-step explanation:
Since its an isosceles triangle , two angles or two side are equal.
So lets take 5y - 3 as one of the equal angles, so
5y-3+ 5y-3 + 76 = 180 (angles in a triangles should add up to 180)
10y - 6 + 76 = 180
10y = 180 - 70
10y =110
y = 110/10
y = 11
Now, since we found y we need to find x.
Lets us take 8x and 13x - 15 as the equal sides.
8x = 13x - 15
8x - 13x = -15
-5x = -15
x = -15 / -5
x = 3
so we found the values of x and y !
Answer:
x = 3y = 11Step-by-step explanation:
You want the values of x and y, given an isosceles triangle with congruent sides JK=8x and KL=13x-15, angle K=76°, and angle J=(5y-3)°.
Congruent sidesJK = KL
8x = 13x -15
15 = 5x . . . . . . add 15-8x
3 = x . . . . . divide by 5
Sum of anglesThe sum of the angles in the triangle is 180°.
2(∠J) +∠K = 180°
2(5y -3) +76 = 180 . . . . substitute known values, divide by °
10y +70 = 180 . . . . . . simplify
y +7 = 18 . . . . . . . . divide by 10
y = 11 . . . . . . . . . subtract 7
The values of x and y are 3 and 11, respectively.
which of the following best describes why you might want to add both l1 and l2 regularizers to an ordinary least squares linear regression model
L1 (Ridge Regression) regularization is better than L2( Lasso regression). A regularization term two general types of regularization L1 and L2 regularization is added to solve the overfitting problem.
Let's use a linear regression formula for this explanation, y = mx + c
This is the simplest formula, so if there is only one feature, this is the formula. But in the real world, we rarely deal with just one feature. Most of the time we have multiple functions.
y = m₁ x₁ + m₂x₂ + ----+ mₙxₙ
To create simpler (sparse) models when the dataset has a large number of features, here are some of the regularization techniques used to correct overfitting and feature selection. A regression model that uses the L1 regularization method is called a Lasso regression. Lasso regression (least absolute shrinkage and selection operator) is Add "absolute size".
∑(Yᵢ ) - ∑Xᵢβⱼ)² + λ ∑|βⱼ|
Models using L2 are called ridge regression Ridge Regression adds the "squared magnitude" of the coefficients as a penalty term to the loss function. where the highlighted part represents the L2 regularization factor and the cost function
∑(Yᵢ - ∑Xᵢβⱼ )² + λ ∑β²
The L1 regularization is more robust than the L2 regularization for fairly obvious reasons. Since we take the weights squared, the cost of outliers present in the data increases exponentially. L1 regularization takes the absolute value of the weights, so the cost increases only linearly. Both L1 and L2 can add cost penalties depending on the complexity of the model, so when calculating the cost using the loss function, an auxiliary component called the regularization term adds complexity to the model. Added for segmentation.
To learn more about linear regression model, refer:
https://brainly.com/question/25987747
#SPJ4
find the distance between the points (-9.3 , 6.7) and (-9.3, -5.5)
Answer:
0, -12
Step-by-step explanation:
Solve The Problem
There are 54 children at a park. They want to make teams with 7
children on each team. Three of the children go home. How many
complete teams can they make? Explain
Answer:
7
Step-by-step explanation:
54 - 3 = 51
51 divided by 7 is 7 with 2 left over
A recent study of the lifetimes of cell phones found the average is 24.3 months. The standard deviation is 2.6 months. If a company provides its 33 employees with a cell phone, find the probability that the mean lifetime of these phones will be less than 23.8 months
An ordinary bend is a ringer molded bend that gives probabilities of irregular factors taken in a nonstop conveyance. The z score formula is used to standardize the random variables into a z score.
Using the z score formula and the z table, standardize the value of x and use it to denote the cellphone's lifetime in months.
For what reason is likelihood region under typical bend?The area under the probability density function curve in a given range is the probability that a continuous random variable fall within a given range. Because the value of a random variable must be in the sample space, the total area under the curve for any pdf is always 1.
What is the absolute likelihood under the ordinary circulation bend?A continuous probability distribution is the normal distribution. Probability is affected in multiple ways by this. 1 is the total area under the normal curve. A normal random variable X has a 0 chance of matching any given value.
To learn more about probability here
https://brainly.com/question/11234923
#SPJ4
Full Question = A recent study of the lifetimes of cell phones found the average is 24.3 months. The standard deviation is 2.6 months. If a company provides its employees with a cell phone, find the probability that the mean lifetime of these phones will be less than 23.8 months. Assume cell phone life is a normally distributed variable.
A researcher performs six independent hypothesis tests each at the 5% significance level. Determine the probability of observing at most two Type Errors. (Round your final answer to the nearest hundredth of a percent, e.g., 12.63% Rounding counts
At the 5% significance level, a researcher conducts six separate hypothesis tests. the likelihood of finding two or fewer Type Errors.
What is the 5 step process in statistics?Declare your null and alternate hypotheses in Step 1. Data collection is step two. Perform a statistical test in step three. In step four, you must choose whether to reject or not to reject your null hypothesis. Deliver your results in Step 5. Five steps make up the statistical process: design the study, assemble the data, Analyze the data, draw conclusions, and take action. In a planned experiment, the variables are under the researchers' control.
Utilizing sample data, hypothesis testing is a method used to determine whether a hypothesis is tenable. The test offers proof that, given the available data, the hypothesis is plausible. By measuring and reviewing a representative sample of the population under study, statistical analysts can evaluate a theory.Procedures for testing hypotheses Identifying the null hypothesis is the first step.
To learn more about hypothesis refer to :
https://brainly.com/question/24756209
#SPJ4
NO LINKS!! Find a formula for the nth term of the geometric sequence:
7, -21, 63, . . .
a_n =
To find the formula for the nth term of a geometric sequence, we can use the formula:
a_n = a_1 * r^(n-1)
where a_1 is the first term of the sequence, r is the common ratio, and n is the position of the term.
In this case, the first term of the sequence is a_1 = 7 and the common ratio is r = (-21)/7 = -3. Plugging these values into the formula, we get:
a_n = 7 * (-3)^(n-1)
Therefore, the formula for the nth term of the geometric sequence is:
a_n = 7 * (-3)^(n-1)
Answer:
[tex]a_n=7\left(-3\right)^{n-1}[/tex]
Step-by-step explanation:
[tex]\boxed{\begin{minipage}{5.5 cm}\underline{Geometric sequence}\\\\$a_n=ar^{n-1}$\\\\where:\\\phantom{ww}$\bullet$ $a$ is the first term. \\\phantom{ww}$\bullet$ $r$ is the common ratio.\\\phantom{ww}$\bullet$ $a_n$ is the $n$th term.\\\phantom{ww}$\bullet$ $n$ is the position of the term.\\\end{minipage}}[/tex]
Given geometric sequence:
7, -21, 63, ...To find the common ratio, divide a term by the previous term:
[tex]\implies r=\dfrac{a_3}{a_2}=\dfrac{63}{-21}=-3[/tex]
Substitute the found common ratio and given first term into the formula to create an equation for the nth term:
[tex]a_n=7\left(-3\right)^{n-1}[/tex]
Select the correct answer from each drop-down menu. Consider the equation below. − 2 ( 5 x + 8 ) = 14 + 6 x The equation was solved using the following steps. Step 1: − 10 x − 16 = 14 + 6 x Step 2: − 16 x − 16 = 14 Step 3: − 16 x = 30 Step 4: x = 30 − 16 Step 5: x = − 15 8 Complete the statements below with the process used to achieve steps 1-4. Step 1: -2 to 5x and 8. Step 2: 6x. Step 3: 16. Step 4: -16.
Answer:
x = -1.875
Step-by-step explanation:
-2 (5x + 8) = 14 + 6x
-10x - 16 = 14 + 6x
-16x = 30
x = 30/-16
x = -1.875
given a program with an instruction count of 105 instructions divided into classes as follows: a: 20%, b: 30%, c: 20%, d: 30%
The program can be broken down into four classes, each with a different percentage of instructions.
What is program?Program in math is a set of instructions or steps that are used to solve a problem. It is a systematic approach to problem-solving, using algorithms and data structures to store and manipulate data. Program in math can be used to solve a variety of problems, from simple arithmetic operations to complex calculations such as solving equations or finding the optimal solution for a game. Program in math helps us to make decisions, find patterns, and solve problems in an efficient and organized way.
Class A consists of 20% of the instructions,
Class B consists of 30%,
Class C consists of 20%
Class D consists of 30%.
This breakdown allows for a better understanding of the program, making it easier to analyze and determine what needs to be done to improve it.
To know more about program click-
https://brainly.com/question/24877689
#SPJ4
The program can be broken down into four classes, each with a different percentage of instructions.
What is program?Program in math is a set of instructions or steps that are used to solve a problem. It is a systematic approach to problem-solving, using algorithms and data structures to store and manipulate data. Program in math can be used to solve a variety of problems, from simple arithmetic operations to complex calculations such as solving equations or finding the optimal solution for a game. Program in math helps us to make decisions, find patterns, and solve problems in an efficient and organized way.
Class A consists of 20% of the instructions,
Class B consists of 30%,
Class C consists of 20%
Class D consists of 30%.
This breakdown allows for a better understanding of the program, making it easier to analyze and determine what needs to be done to improve it.
To know more about program visit:
brainly.com/question/27983499
#SPJ4
pls help it’s due today
The average rate of change between interval 5 to 11 is 4.5.
Define average rate of change.It is the average amount by which the function changed per unit throughout that time period. It is calculated using the slope of the line linking the interval's ends on the graph of the function. The average rate at which one quantity changes in relation to another's change is referred to as the average rate of change function. A method that determines the amount of change in one item divided by the corresponding amount of change in another is known as an average rate of change function.
Given
Average rate of change
= Change in output/ Change in input
= 45 - 18/ 11 -5
= 27/6
4.5
The average rate of change between interval 5 to 11 is 4.5.
To learn more about average rate of change, visit:
https://brainly.com/question/28744270
#SPJ1
Evaluating Linear Piecewise Functions
Consider the function:
f(x) =
7/2+ 2x, x≤-1
-5+3x/2, -1
1/4x, x≥3
< -5_-4_-3_-2_-1_0_1_2_3_4_5 >
What are these values?
f(-3) =[-19/2]ᵒʳ[-5/2]ᵒʳ[-3/4]ᵒʳ[5/2]
f(-1) =[-13/2]ᵒʳ[-3/2]ᵒʳ[-1/4]ᵒʳ[-3/2]
f(3) =[-7/4]ᵒʳ[-1/2]ᵒʳ[3/4]ᵒʳ[19/2]
PLEASE HELP ME ON A SERIOUS TIME CRUNCH!!
I need help with this.
Answer:
8/17
Step-by-step explanation:
You want the ratio of 32 mm to 6.8 cm, compared in mm.
RatioThe ratio of interest is ...
(32 mm)/(6.8 cm) = (32 mm)/(68 mm) = (4·8)/(4·17) . . . . . mm cancels
= 8/17
The ratio of ball diameters is 8/17.
Here is an equation: 2x+4 y-31=123
1. Solve for x.
x=
2. Solve for y.
y=
X=77
y=77by 2
answer is complete
Find the standard form of the equation of the line through (8,-3) that is parallel to the line 3y=4x+8
The standard form of the equation of the line passing through (8,-3) that is parallel to the line 3y=4x+8 is 4x - 3y = 41
How to represent equation in standard form?The equation of the line in standard form can be represented as follows:
Ax + By = C
where
A, B and C are constantTherefore, the standard form of the equation of the line through (8,-3) that is parallel to the line 3y = 4x + 8 is a s follows;
Parallel lines have the same slope.
Hence,
3y = 4x + 8
y = 4 / 3 x + 8 / 3
The slope of the line is 4 / 3. Hence, the line passes through (8, -3). let's find the y-intercept.
y = 4 / 3 x + b
-3 = 4 / 3 (8) + b
b = -3 - 32 / 3
b = -9 - 32/ 3
b = -41 / 3
Hence,
y = 4 / 3 x - 41 / 3
multiply through by 3
3y = 4x - 41
Therefore, the standard form is 4x - 3y = 41
learn more on standard form here: https://brainly.com/question/11479371
#SPJ1
Please find what the rent per unit needs to be to have a Net Operating Income (NOI) of $100,000.
Assumptions
Please use the following assumptions below:
Rent per unit (per month)
Vacancy Rate (% of Potential Gross Income) 5%
Operating Expenses (% of Effective Gross Income) 30%
Number of Units 18
*Please fill out the blue area Rent per unit (per month)
Vacancy Rate (% of Potential Gross Income)
Operating Expenses (% of Effective Gross Income)
Number of Units
The rent per unit will be $8,354.22 to have a Net Operating Income (NOI) of $100,000.
What is the net operating income?The net operating income (NOI) is the difference between the gross operating income and the operating expenses.
The net operating income excludes some fixed or period expenses.
Total
Rent per unit (per month) = $696.19 ($8,354.22/12) $150,376
Vacancy Rate (5% of Potential Gross Income) 7,519
Effective Gross Income $142,857
Operating Expenses (30% of Effective Gross Income) 42,857
Net Operating Income (NOI) $100,000
Number of Units 18
Working Backwards:Gross operating income = net operating income + operating expenses
Operating expenses = 30% of effective gross income
Net operating income = 70% of effective gross income (100 - 30%)
= $100,000
Effective Gross Income (100%) = $142,857 ($100,000 ÷ 70%)
Vacancy rate = 5% of potential gross income
Effective Gross Income = 95% (100 - 5)
Potential gross income = $150,376 ($142,857 ÷ 95%)
Number of units = 18
Rent per unit = $8,354.22 ($150,376/18)
Rent per month = $696.19 ($8,354.22 ÷ 12)
Thus, a rent of $8,354.22 per unit can generate a Net operating income of $100,000.
Learn more about the net operating income at https://brainly.com/question/26206936
#SPJ1
Natalie drives from London to Sheffield.
Natalie leaves London at 9.15am.
Natalie drives for 2 hours before stopping for a break.
The break lasts for 20 minutes.
Natalie then takes another 85 minutes to reach Sheffield.
What time does Natalie arrive in Sheffield?
Answer:
Natalie arrives is Sheffield at 1:00 pm
Step-by-step explanation:
Rx: 325 mL of 30% NaCl Soln. Your Pharmacy stocks 22% and 40% NaCl Soln. How may mL of 22% NaCl Soln would you need to formulate the prescription? (Round to the nearest mL with no units!)
Part B
Complete the proof of the vertical angles theorem.
Given: Lines AB and CD intersect at point E.
Prove: Angle AED is congruent to angle BEC.
Enter the missing statements and reasons in the table.
BIVX¹ X₂ 14pt
Statement
ZAED and ZDEB are a linear pair.
A
m2DEB+m
mZAED+ m2DEB=mZDEB + m2BEC
Reason
given
Linear pairs are supplementary.
definition of linear pair
Linear pairs are supplementary.
subtraction property of equality
definition of congruency
V
Therefore, we have proven the vertical angles theorem by using congruency properties.
The vertical angles theorem's meaning is what?The intersection of two straight lines produces two sets of linear pairs with congruent angles, according to this theorem. Moreover, it indicates that the neighboring angles created by the junction of these two lines are supplementary, or 180 degrees.
Here,
THEOREM:
According to the Vertical Angles Theorem, two crossing lines' opposing (vertical) angles must be equivalent.
THE ISSUE:
Show that ∠1 ≅∠3 and ∠2 ≅ ∠4
PROOF:
(1) A straight line measures 180 degrees; m∠1 + m∠2 = 180°
(2) m∠3 + m∠2 = 180°; the length of a straight line is 180.
(3) Since the sum of the two left-hand sides of the equation equals 180 degrees, the transitive principle of equality holds that m∠1 + m∠2 = m∠3 + m∠2
(4) m∠1 = m∠3 which demonstrates the equality's subtraction property ( m∠2 is subtracted from both sides).
Definition of congruent angles: (5) ∠1 ≅ ∠3
Likewise, for ∠2 ≅∠4:
(1) m∠3 + m∠2 = 180° a straight line has a 180° length.
(2) m∠3 + m∠4 = 180° a straight line has a 180° length.
(3) Since both of the equation's left-hand sides add up to 180 degrees, the expression m∠3 + m∠2 = m∠3 + m∠4 / transitive property of equivalence.
(4) m∠2 = m∠4 , demonstrating the equivalence of subtraction (m∠3 is subtracted from both sides).
// definition of congruent angle , ∠2 ≅ ∠4
We have therefore established the theorem.
Therefore, we have proven the vertical angles theorem by using congruency properties.
To know more about vertical angles theorem , visit
https://brainly.com/question/8119520
#SPJ1
Which graph represents the solution set of the system of inequalities?
Answer:
Step-by-step explanation:
Determine whether an equation in the form x = a , where a is a constant is sometimes, always, or never a function. Explain your reasoning.
An equation in the form x = a , where a is a constant can never be a function.
What is a function?
A function is defined as a relation between a set of inputs having one output each.
In simple words, a function is a relationship between inputs where each input is related to exactly one output.
Every function has a domain and codomain or range.
A function is generally denoted by f(x) where x is the input.
The general representation of a function is y = f(x).
According to the given question:
An equation is in the form x = a , where a is a constant.
This equation is a vertical line parallel to y axis. For a function a relation of y = f(x) is missing in the given equation since a is a constant.
Hence, x = a can never be a function.
To know more about function visit
https://brainly.com/question/28303908
#SPJ1
In the coordinate plane, the point A(-4, 0) is translated to the point A'(0, -4). . Under the same translation, the points B(-8, 3) and C(-1, -3) are translated to B' and C', respectively. What are the coordinates of B And C'?
Part 1) The rule of the translation is (x,y) ------> (x+4,y+5) ,Part 2) B'(4,8) Part 3) C'(3,3)
What are the coordinates of B And C'?Part 1)Find out the rule of the translation
we know that
The transformation of the point A to A' is equal to
A(-4,1) ------> A'(0,6)
so
The rule of the translation is equal to
(x,y) ------> (x + a ,y + b)
(-4,1) ------> (-4 + a, 1 + b)
Find the value of a
-4 + a = 0 -----> a = 4
Find the value of b
1 + b = 6 -----> b = 5
substitute the values of a and b
(x,y) ------> (x+4,y+5)
That means -----> The translation is 4 units at right and 5 units up
Part 2)Find out the coordinates of B'
Applying the rule of the translation
(x,y) ------> (x+4,y+5)
so
B(0,3) ------> B'(0+4,3+5)
B(0,3) ------> B'(4,8)
Part 3)Find out the coordinates of C'
Applying the rule of the translation
(x,y) ------> (x+4,y+5)
so
C(-1,-2) ------> C'(-1+4,-2+5)
C(-1,-2) ------> C'(3,3)
To learn more about the coordinates refer to:
https://brainly.com/question/13684685
#SPJ1
Use the scale to help you solve the equation and find the value of x. Enter the
value of x below.
x+ 6 = 12
X =
Answer:
x=6
Step-by-step explanation:
12-6=6 or 6+6=12
Describe the graph of proportional relationship represented by the equation Y equals eight minus 5X
The description of the proportional relationship represented by the equation y = 8 - 5x is A. The graph is a line that goes through points (0, 8) and ( 4, -12 ).
How to describe the graph ?The graph is given in the form of a linear equation which is y = mx + b. In this equation, b is the y - intercept, or the point the line crosses the y - axis when x is 0. This point on y = 8 - 5x, is 8.
If the line passes through the x axis at point 4, then the y - intercept would be :
= 8 - 5 ( 4)
= 8 - 20
= - 12
Find out more on describing graphs at https://brainly.com/question/29709262
#SPJ1
Options for this question are:
The graph is a line that goes through points (0, 8) and ( 4, -12 ).The graph is a line that goes through points (0, 5) and (15, 2).The graph is a line that goes through points (0, 4) and (12 , 1).The graph is a line that goes through points (0, 5) and (1, 12 ).What is the correlation coefficient between the following variables?
Correlation Coefficient between the given variables is 0.0023
What is Correlation Coefficient?A statistical concept known as the correlation coefficient aids in establishing a relationship between expected and actual values gained through statistical experimentation. The estimated correlation coefficient's value explains how well the expected and actual values match.
Correlation Value of the coefficient is always between -1 and +1. If the correlation coefficient value is positive, the two variables have a similar and same relationship. Otherwise, it shows how the two variables are different.
The Pearson correlation coefficient is the result of dividing the covariance of two variables by the sum of their standard deviations. It is typically displayed as ρ(rho).
The correlation coefficient can be determined using the formula if the two variables being discussed are x and y.
Formula for Correlation Coefficient:
r×{[n∑x∧2-(∑x)∧2][n∑y∧2-(∑y)∧2]}=n(∑xy)-∑x×∑y.
Calculation:From given data:
∑x=3.95+4.18+7.5+6.19+6.35+7.23+7.98+8.15=51.53
∑y=16.12+15.75+21.45+20.08+22.60+21.95+26.42+28.38=172.75
∑x²=[tex]3.95^{2}+4.18^{2}+7.5^{2}+6.19^{2}+6.35^{2}+7.23^{2}+7.98^{2}+8.15^{2}=350.3393[/tex]
∑y²=[tex]16.12^{2}+15.75^{2}+21.45^{2}+20.08^{2}+22.60^{2}+21.95^{2}+26.42^{2}+28.38^{2}=3867.2291[/tex]
∑xy=[tex]3.95\cdot16.12+4.18\cdot15.75+7.5\cdot21.45+6.19\cdot20.08+6.35\cdot22.6+7.23\cdot21.95+7.98\cdot26.42+8.15\cdot28.38=1159.0163[/tex]
By substituting in formula:
[tex]r=\frac{8*1159.0163-51.53*172.75}{(8*350.3393-51.53^2)(8*3867.2291-172.75^2)}=\frac{370.3229}{147.3735*1095.2703}[/tex]
r=0.00229=0.0023
Correlation Coefficient between the given variables is 0.0023
To refer more about Correlation Coefficient, visit:
brainly.com/question/27842223
#SPJ1
The correlation coefficient between the following variables is 0.76.
What is correlation?A statistical measure called correlation shows how much two or more variables fluctuate in connection to one another. When two variables rise or decrease simultaneously, there is a positive correlation; when there is a negative correlation, one variable increases as the other falls.
We know the coefficient of correlation is [tex]r = \frac{\sum{XY}}{\sum{X^{2}Y^2}}[/tex].
Now, [tex]\sum{XY}[/tex] = (3.95)×(16.12) + (4.18)×(15.75) + (7.50)×(21.45) + (6.19)×(20.08)
+ (6.35)×(22.60) + (7.23)×(21.95) + (7.98)×(26.42) + (8.15)×(28.38).
[tex]\sum{XY} =[/tex] 1159.02.
[tex]\sum{X} =[/tex] 51.53.
[tex]\sum{X^2} =[/tex] 463.35.
[tex]\sum{Y} =[/tex] 172.75.
[tex]\sum{Y^2} =[/tex] 5047.015.
∴ [tex]r = \frac{\sum{XY}}{\sum{X^{2}Y^2}}[/tex].
= [tex]\frac{1159.02}{\sqrt{463.35\times 5057.015}}[/tex].
= 1159.02/1530.74.
= 0.76.
learn more about correlation here :
https://brainly.com/question/28898177
#SPJ1
The coordinates of the vertices of a rectangle are (4, −3), (2, 3), (11, 6), and (13, 0).
What is the perimeter of the rectangle? Round each step to the nearest tenth.
Enter your answer, as a decimal, in the box.
The perimeter of the rectangle is equal to 2(√90 + √40).
What is coordinate geometry?A coordinate plane is a 2D plane which is formed by the intersection of two perpendicular lines known as the x-axis and y-axis. A coordinate system in geometry is a method for determining the positions of the points by using one or more numbers or coordinates.
The perimeter is defined as the sum of all the sides of the rectangle.
Given coordinates of the rectangle are (4, −3), (2, 3), (11, 6), and (13, 0). The length and width of the rectangle are calculated by the distance formula.
D = √ [ ( y₂ - y₁ )² + ( x₂ - x₁ )² ]
Here, D is the distance, and the y₂ and y₁ are the coordinates.
L = √(13-4)² + 3² = √90
W = √ ( 4-2)² + (3 + 3)² = √40
The perimeter is,
P = 2(L + W)
Here, P is the perimeter and L is the length, and W is the width.
P = 2 (√90 +√ 40)
To know more about Coordinate geometry follow
brainly.com/question/18269861
#SPJ1
Select all the expressions that are equivalent to 2(x+3).
(Select all that apply.)
(x+3) . 2
2 . x+3
2x+5
2x+6
2x+3 . 2
Answer:
The correct answers are (x+3) . 2 and 2x+6.
In the first expression, (x+3) . 2, the parentheses indicate that x+3 should be treated as a single term and multiplied by 2. This is equivalent to 2(x+3).
In the second expression, 2x+6, the 2 is multiplied by x and the 3 from x+3, giving 2x+6, which is also equivalent to 2(x+3).
The other expressions are not equivalent because they do not properly distribute the multiplication. For example, in 2 . x+3, the 2 is only being multiplied by x, not x+3, and in 2x+5, the 2 is only being multiplied by x and not 3.
Compute the product of 0.123(overline) and 9, and write your result as a fraction in simplified form.
The product of 0.123(overline) and 9 is equal to 149/142.
To multiply 0.123(overline) and 9, we can first rewrite 0.123(overline) as a fraction. To do this, we can express 0.123(overline) as a fraction with a denominator of 1000, which represents the number of thousandths that 0.123(overline) represents:
0.123(overline) = 123/1000 = 123/10^3To find the product of 123/1000 and 9, we can use the distributive property:
(123/1000) * 9 = 123 * 9 / 1000 = 1047 / 1000To simplify this fraction, we can divide both the numerator and the denominator by their greatest common factor, which is 7:
1047 / 1000 = 149 / 142Therefore, the product of 0.123(overline) and 9 is equal to 149/142.
Learn more about The distributive property here:
https://brainly.com/question/2807928
#SPJ4
Carmen paid $10.50 for a T-shirt at the mall it was on sale for 30% off what was the original price before the discount
To find the original price of the T-shirt before the discount, we need to divide the discount by the percentage to find the discount amount, then add the discount amount to the sale price to find the original price. In this case, the discount was $10.50 * 30% = $<<10.5030.01=3.15>>3.15. So the original price of the T-shirt before the discount was $10.50 + $3.15 = $<<10.50+3.15=13.65>>13.65. Answer: \boxed{13.65}.
Answer:
$15.00
Step-by-step explanation:
The original price is x, an unknown.
x is 100% of the original price.
The discount was 30%.
100% - 30% = 70%
The discounted price was 70% of the original price.
70% of x is $10.50
0.7x = 10.5
x = 15
Answer: $15.00