Solve: 3 + 5n = 5(n + 2) - 7 * what solution is it and please explain i need a good grade
Answers
Answer:
3+5n=5(n+2)-7*
We move all terms to the left:
3+5n-(5(n+2)-7*)=0
We calculate terms in parentheses: -(5(n+2)-7*), so:
5(n+2)-7*
We add all the numbers together, and all the variables
5(n+2)
We multiply parentheses
5n+10
Back to the equation:
-(5n+10)
We get rid of parentheses
5n-5n-10+3=0
We add all the numbers together, and all the variables
-7!=0
There is no solution for this equation
Step-by-step explanation:
Related Questions
When contructing 95% confidence interval for the mean when the parent population i right kewed and the ample ize i mall, the proportion of interval that include the population mean approache
Answers
So when parent population is right-skewed and the sample size is small, the percentage of intervals that include population mean is (above, below, equal to) 0.95 when building 95% confidence intervals for said mean.
Explain the term confidence interval?A confidence level of both the CI refers to the likelihood that its confidence interval contains the actual population mean value.
Any confidence level can be used to determine a CI, although 95% is the most typical value.A 95% confidence interval, strictly speaking, means that if we generate a 95% confidence interval each of 100 independent samples, then about 95 of a 100 confidence intervals include the true mean value (μ).Thus, when parent population is right-skewed and the sample size is small, the percentage of intervals that include population mean is (above, below, equal to) 0.95 when building 95% confidence intervals for said mean.
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19 < -3(b+8)+1 solve for b
Answers
Answer:
b = -14
Step-by-step explanation:
a coin is to be tossed 1000 times. what is the probability that the 785th toss is heads? group of answer choices 0 1/4 1/2 3/4 1
Answers
A coin is to be tossed 1000 times, the probability that the 785th toss is heads is 1/2.
Hence option c is the correct answer.
A coin is to be tossed 1000 times and the probability of the outcome to be Heads oor Tails is recorded accordingly.
Probability of an event refers to the possibility of the event to occur or in other words, how likely is tthe event to occur. Probability ranges from 0 to 1 as number and 0% to 100% as percentage.
Probability can be calculated with the formula as,
Probability of an event to occur = (Nmber of favourable outcomes) / (Total number of outcomes possible)
Here, when tossing a coin we have two outcomes, Heads and Tails
The number of favourable outcome, that is the outcome is Heads is 1.
Thus the probability that the outcome is a Head = 1/2
When a coin is tossed for 785th time the probability that the head will come up = 1/2 (assuming that the coin is unbiased).
The probability remains unchanged for tossing the coin for the first time and for the 785th time since no number of times the coin is tossed the number of favourable outcome is 1 and total outcomes is 2.
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What is 45 percent of 37?
1. 0.1665
2. 1.665
3. 16.65
4.166.5
Answers
Answer
16.65
Step-by-step explanation:
Is 45 percent of 67
PNC Bank gives 0.5% interest on their savings accounts. An account has a balance of $1,500. What will the total balance be after 8 years? (Hint: what is the interest formula?)
Answers
I'm stuck: 20 POINTS AND BRAINLIEST!
I'm really stuck on this question. Find the value of the missing value and find x.
Answers
Answer:
see explanation
Step-by-step explanation:
The secant- secant angle PRS is half the measure of the difference of the intercepted arcs, that is
\(\frac{1}{2}\) (PD - QS) = 50 ( multiply both sides by 2 )
PD - QS = 100, that is
12x + 8 - (4x + 4) = 100
12x + 8 - 4x - 4 = 100
8x + 4 = 100 ( subtract 4 from both sides )
8x = 96 ( divide both sides by 8 )
x = 12
Thus
arc PD = 12(12) + 8 = 144 + 8 = 152°
arc QS = 4(12) + 4 = 48 + 4 = 52°
kennedy buys a bag of cookies that contains 7 chocolate chip cookies, 8 peanut butter cookies, 6 sugar cookies and 9 oatmeal cookies. what is the probability that kennedy randomly selects an oatmeal cookie from the bag, eats it, then randomly selects a sugar cookie? express you answer as a reduced fraction.
Answers
The probability that Kennedy randomly selects an oatmeal cookie and then a sugar cookie is 9/30 * 6/29, which simplifies to 3/29.
1. First, we need to find the total number of cookies in the bag. There are 7 chocolate chip, 8 peanut butter, 6 sugar, and 9 oatmeal cookies, which add up to 30 cookies (7+8+6+9=30).
2. Next, we find the probability of selecting an oatmeal cookie first. There are 9 oatmeal cookies out of a total of 30 cookies, so the probability is 9/30. After Kennedy eats the oatmeal cookie, there are now 29 cookies left in the bag.
3. Now, we need to find the probability of selecting a sugar cookie after eating the oatmeal cookie. There are 6 sugar cookies out of 29 remaining cookies, so the probability is 6/29.
4. To find the overall probability, we multiply the probability of the first event (selecting an oatmeal cookie) by the probability of the second event (selecting a sugar cookie), which is (9/30)*(6/29).
The probability that Kennedy randomly selects an oatmeal cookie from the bag, eats it, and then randomly selects a sugar cookie is 9/30 * 6/29, which simplifies to 3/29 as the final reduced fraction.
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HELP ASAP ILL GIVE BRAINLIST
The probability of a red candy being selected from a bowl is 0.9, and the probability of a pink frosted animal cookie being taken out of a different bowl is 0.4. What is the probability of getting both a red candy and a pink cookie?
Answers
Answer:
0.36
Step-by-step explanation:
Suppose a population consists of 50,000 people. Which of the following
numbers of members of the population being surveyed could result in a
sample statistic but not a parameter?
A. 500
B. Both 500 and 50,000
C. Neither 500 nor 50,000
D. 50,000
SUB
Answers
Answer:
500
Step-by-step explanation:
Parameter= whole population
Sample statistic= outcome of part of population surveyed
Scenario 1A Calculate the following amounts for a participating provider who bills Medicare and has no deductible left. Submitted charge (based on provider’s regular fee) $650 Medicare participating physician fee schedule (PFS) $450 Coinsurance amount (20% paid by) $ Medicare payment (80 percent of the PFS) $ Provider write-off $ Scenario 1B Calculate the following amounts for a participating provider who bills Medicare and remaining annual deductible for the patient. Submitted charge (based on provider’s regular fee) $650 Medicare participating physician fee schedule (PFS) $450 Patient pays $100 remaining on their deductible $ Remaining amount for Insurance and patient to pay $ (PFS - $100) Coinsurance amount (20% of remaining amount) $ Total paid by patient (deductible & 20% of remaining) $ Medicare payment (80 percent of the remaining amount) $ Provider write-off $
Answers
Scenario 1A:
Coinsurance amount is $90
Medicare payment is $360
Provider write-off is $290
Scenario 1B:
Remaining amount for Insurance and patient to pay is $350
Coinsurance amount is $70
Total paid by patient is $170
Medicare payment is $280
Provider write-off is $370
Scenario 1A:
Submitted charge: $650
Medicare participating physician fee schedule (PFS): $450
Coinsurance amount (20% paid by patient): $
Medicare payment (80% of the PFS): $
Provider write-off: $
To calculate the missing amounts, we can use the provided information:
Coinsurance amount (20% paid by patient):
Coinsurance amount = 20% of the Medicare participating physician fee schedule (PFS)
Coinsurance amount = 0.2 * $450 = $90
Medicare payment (80% of the PFS):
Medicare payment = 80% of the Medicare participating physician fee schedule (PFS)
Medicare payment = 0.8 * $450 = $360
Provider write-off:
Provider write-off = Submitted charge - Medicare payment
Provider write-off = $650 - $360 = $290
Scenario 1B:
Submitted charge: $650
Medicare participating physician fee schedule (PFS): $450
Patient pays $100 remaining on their deductible
Remaining amount for Insurance and patient to pay: $
Coinsurance amount (20% of remaining amount): $
Total paid by patient (deductible & 20% of remaining): $
Medicare payment (80% of the remaining amount): $
Provider write-off: $
To calculate the missing amounts, we can use the provided information:
Remaining amount for Insurance and patient to pay:
Remaining amount for Insurance and patient to pay = PFS - remaining deductible
Remaining amount for Insurance and patient to pay = $450 - $100 = $350
Coinsurance amount (20% of remaining amount):
Coinsurance amount = 20% of the remaining amount
Coinsurance amount = 0.2 * $350 = $70
Total paid by patient (deductible & 20% of remaining):
Total paid by patient = remaining deductible + coinsurance amount
Total paid by patient = $100 + $70 = $170
Medicare payment (80% of the remaining amount):
Medicare payment = 80% of the remaining amount
Medicare payment = 0.8 * $350 = $280
Provider write-off:
Provider write-off = Submitted charge - Medicare payment
Provider write-off = $650 - $280 = $370
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from a group of ten, players will be split at random into two teams of five: the green team and the purple team. ava and david are two of these ten players. what is the probability that ava and david will be on the same team?
Answers
There is a 4/9 probability that Ava and David will be on the same team.
There are a total of 10 players, and we need to randomly select two teams of five players each. The total number of ways to select the two teams is given by the combination formula:
C(10,5) * C(5,5) = 252 * 1 = 252
This is because we first choose 5 players for the green team from 10 players, and then choose the remaining 5 players for the purple team from the remaining 5 players.
Now, we need to find the number of ways in which Ava and David can be on the same team. There are two cases to consider: either they are both on the green team, or they are both on the purple team.
Case 1: Ava and David on green team
To calculate the number of ways in which Ava and David can be on the green team, we first choose 3 players from the remaining 8 players to join them. This can be done in C(8,3) ways. So the total number of ways in which Ava and David can be on the green team is:
C(8,3) = 56
Case 2: Ava and David on purple team
The number of ways in which Ava and David can be on the purple team is the same as the number of ways in which they can be on the green team, which is 56.
So the total number of ways in which Ava and David can be on the same team is 56 + 56 = 112. Therefore, the probability that Ava and David will be on the same team is:
P(Ava and David on same team) = 112/252 = 4/9
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Billy’s rate of pay is 9.60 per hour when he works more than 6 hours he is paid overtime at time and a half. If billy work for 7 hours one day how much does he earn
Answers
If Billy, who works 6 hours per day and is paid overtime at time and a half, works 7 hours one day, he earns $72.00.
How are the total earnings determined?The total earnings for the day by Billy is the addition of the normal earnings and the overtime earnings.
Overtime rates are based on a time and a half, which is 150% of the normal hourly rate of pay.
Normal hourly rate of pay = $9.60
Normal day work hours = 6 hours
The number of hours worked for the day = 7 hours
Overtime hours for the day = 1 hour (7 - 6)
Overtime rate = $14.40 ($9.60 x 1.5)
Normal earnings for the day = $57.60 ($9.60 x 6)
Overtime earnings for the day = $14.40 ($14.40 x 1)
Total earnings for the day = $72.00 ($57.60 + $14.40)
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The owner of the Good Deals Store opens a new store across town. For the new store, the owner estimates that, during business hours, an average of 90 shoppers
Answers
The correct option is (A) 60 as the estimated average number of shoppers in the original store at any time is 45.
What is an average?In layman's terms, an average is a single number chosen to represent a set of numbers, usually the sum of the numbers divided by the number of numbers in the set. The average of the numbers 2, 3, 4, 7, and 9 is 5, for example.To find the estimated average number of shoppers in the original store at any time:
In the new store, the manager estimates that an average of 90 shoppers per hour enter the store, which is equivalent to 1.5 shoppers per minute. The manager also estimates that each shopper stays in the store for an average of 12 minutes. Thus, by Little’s law, there are, on average, N=rt = (1.5)(12) = 18 shoppers in the new store at any time. This is (45-18)/45 × 100 = 60 percent less than the average number of shoppers in the original store at any time.Therefore, the correct option is (A) 60 as the estimated average number of shoppers in the original store at any time is 45.
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The complete question is given below:
The owner of the Good Deals Store opens a new store across town. For the new store, the owner estimates that, during business hours, an average of 90 shoppers per hour enter the store and each of them stays an average of 12 minutes. The average number of shoppers in the new store at any time is what percent less than the average number of shoppers in the original store at any time?
(A) 60
(B) 70
(C) 80
(D) 50
Find the measure of the each angle indicated. HELP
Answers
Answer:
(n-2)180 (this is the equation to find the sum of interior angles)
(4-2) 180 (plug in the amount of angles in the polygon and then solve)
2* 180
360
360 - 115 -100- 73= 72 (360 is the sum of all angles for this polygon. so subtract the known angles to find the unknown one)
measure of angle B is 72 degrees
Step-by-step explanation:
Answer:
b=72 degrees
Step-by-step explanation:
100+115+73=288
360-288= 72 degrees
Assuming that the x-axis tick marks will be separated by 5 (5, 10, 15, and so on), what is the largest value that should appear on the x-axis
Answers
The largest value that should appear on the x-axis assuming that the tick marks will be separated by 5 is 95.
Since the tick marks are separated by 5, we can start with the smallest tick mark at 0 and add 5 for each subsequent tick mark.
To determine the largest value that should appear on the x-axis, we need to find the largest multiple of 5 that is less than or equal to the largest value in the data set. In this case, we don't have any information about the data set, so we can't determine the largest value.
However, we can assume that the x-axis should be long enough to accommodate the largest value that we expect to see. If we assume that the largest value is 100, then the largest multiple of 5 that is less than or equal to 100 is 95.
Therefore, the largest value is 95.
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A golf player is trying to make a hole-in-one on the miniature golf green shown. 19.2 ft12.8 ft Imagine that a coordinate grid is placed over the golf green. The golf ball is at (4, 3.2) and the hole is at (15.2, 3.2). The player is going to bank the ball off the side wall of the green at (9.6, 12.8). Part 1 out of 2 Enter an equation for the path of the ball. Enter the parameter a as a fraction in lowest terms. y =
Answers
Answer:
- 12/7|x-9.6|+12.8
Step-by-step explanation:
Suppose a survey of 580 women in the United States found that more than 64% are the primary investor in their household. Which part of the survey represents the descriptive branch of statistics? Make an inference based on the results of the survey.64% of women in the sample are the primary investor in their household.
There is an association between U.S. women and being the primary investor in their household.
Answers
The sentence "64% of women in the sample are the principal investor in their household" serves as an example of descriptive statistics.
What will the inference be?This sentence provides a summary of the survey's data and a descriptive statistic (percentage) that characterizes the sample's characteristics.
According to the survey's findings, "there is a correlation between American women and being the principal investor in their household." The sample data are used to draw this conclusion about the population. Despite the fact that the sample is not representative of all American women, the findings indicate that a sizable number of the women in the sample are the principal investors in their households.
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Do the columns of b span r4? does the equation bx d y have a solution for each y in r4?
Answers
Answer: Theorem 4 says that the columns of B do NOT span R4. Further, using Theorem 4, since 4(c) is false, 4(a) is false as well, so Bx = y does not have a solution for each y in R4.
Step-by-step explanation:
Yes, the column b span r4. Yes, the equation has a solution for each y in r4.
Matrix is defined as a set of numbers consisting of rows and columns elements.
It consists of rows and columns.
The dimensions of the matrix are determined by m×n.
Given matrix,
\(\begin{bmatrix} &1 &3 &-2 &2\\ &0 &1 &1 &-5\\ &1 &2 &-3 &7\\ &-2 &-8 &2 &-1\\\end{bmatrix}\)
R3 → R1
R3→R4+2R1
\(\begin{bmatrix} &1 &3 &-2 &2 \\ &0 &1 &1 &-5 \\ &0 &-1 &1 &5 \\ &0 &-2 &-2 &3\\\end{bmatrix}\)
R3→R3+R2
R4→R4+2R2
\(\begin{bmatrix} &1 &3 &-2 &2 \\ &0 &1 &1 &-5 \\ &0 &-0 &2 &0 \\ &0 &-0 &0 &7\\\end{bmatrix}\)
This is the row echelon form of B. It has four independent columns and the dimension of r4 is 4.
column of B spans r4.
Row of matrix = 4
No of columns of matrix = No of rows of the matrix.
and the columns of B span r4.
thus we can conclude that the columns of b span r4 and the equation
bx =d y have a solution for each y in r4.
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5. When does a within sample variance occur?
Select one:
a. Within a single sample or group
b. Only within groups
c. Within multiple samples or groups
d. Only within samples
6. When validating assumpt
Answers
Within sample variance occurs within a single sample or group.
Within sample variance refers to the variation or dispersion of values within a single sample or group. It measures how much the individual data points deviate from the mean or central tendency within that specific sample. This variance is calculated by taking the average of the squared differences between each data point and the sample mean.
For example, let's say we have a sample of test scores for a group of students. Within sample variance would help us understand how much the individual test scores vary within that particular group. If the test scores are tightly clustered around the mean, the within sample variance would be low, indicating a high level of similarity among the scores. Conversely, if the test scores are widely spread out, the within sample variance would be high, suggesting a greater diversity or variability among the scores.
In summary, within sample variance occurs within a single sample or group and quantifies the dispersion of values around the mean within that sample. It helps assess the level of variation or homogeneity within the data set.
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SOMEONE HELP ME PLEASE
Answers
multiply 165 and 3
A rectangular prism has a longth of 7 om, a width of 4 om, and a height of 2 om The prism is filled with cubes that have edge lengths or om How many cubes are needed to fill the rectangular prism? Enter your answer in the box To fill the rectangular prism, cubes are needed.
Answers
Answer:56
Step-by-step explanation:
I think cuz I multiplied 7x2x4
PLZ HELP AND CAN U PLZ EXPLAIN
Answers
In this exercise, you’ll create a form that accepts one or more
scores from the user. Each time a score is added, the score total,
score count, and average score are calculated and displayed.
I ne
Answers
In this exercise, you’ll create a form that accepts one or more scores from the user. Each time a score is added, the score total, score count, and average score are calculated and displayed.
In order to achieve this, you will need to utilize HTML and JavaScript. First, create an HTML form that contains a text input field for the user to input a score and a button to add the score to a list. Then, create a JavaScript function that is triggered when the button is clicked.
To update these values, you will need to loop through the array of scores and calculate the total and count, and then divide the total by the count to get the average.
Finally, the function should display the updated values to the user. You can use HTML elements such as `` or `
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solve the proportion r/72=1/3 r=?
please help meee
Answers
Answer:
R= 24
Step-by-step explanation:
Have a nice day/night :)
Also if you you can may you please mark me brainliest
The value of r is,
⇒ r = 24
What is Division method?Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications.
For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.
Given that;
The expression is,
⇒ r/72 = 1/3
Now, We can simplify for r as;
⇒ r/72 = 1/3
⇒ r = 72 / 3
⇒ r = 24
Thus, The value of r is,
⇒ r = 24
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HELP ME PLEASE!!! (20-15 points and brainlist) DO ALL QUESTIONS
Answers
A teacher runs each morning before school. Last week, he ran a total of 5 3/4 miles. This week, he ran 4/5 of the total number of miles he ran last week. What is the total number of miles that the teacher ran last week and this week?
Answers
"What is the total number of miles that the teacher ran last week and this week, if he ran a total of 5 3/4 miles last week and 4/5 of that distance this week?" is 10 13/20 miles.
To find the total number of miles that the teacher ran last week and this week, we need to:
Determine how many miles the teacher ran this week.
Add that number to the total number of miles the teacher ran last week.
Let's start by finding out how many miles the teacher ran this week:
The teacher ran 4/5 of the total number of miles he ran last week, which means he ran:
(4/5) x 5 3/4 miles = 4 3/5 miles
Next, we can add the number of miles the teacher ran last week to the number of miles he ran this week to find the total number of miles he ran:
5 3/4 miles + 4 3/5 miles = 10 13/20 miles
Therefore, the teacher ran a total of 10 13/20 miles last week and this week combined.
guess what... I need more help again...!!1
Answers
Answer:
Associative Property of Multiplication
Step-by-step explanation:
Definition:
Changing the grouping of the factors, but does not change the value of the product.
Example:
(2x4)x6 = 2x (4x6)
Hope this helps!:)
1. Johnny typically drives his truck between 250 and 300 miles a day for work. Last week he worked 5 days and drove a total of 1300 miles. Is this reasonable?
Answers
Answer:
1350
Step-by-step explanation:
Consider the following time series
Quarter Year1 Year2 Year3
1 71 68 62
2 49 41 51
3 58 60 53
4 78 81 72
a.construct a time series plot.what type of pattern exist in the data
b.use the following dummy variables to develop an estimated regression equation to account for the seasonal effects in the data; Qtr1=1 if Quater 1,0 otherwise Qtr2=1 if Quater 2,0 otherwise Qtr3=1 if Quater 3,0 otherwise
c.compute the quarterly forecast for next year
Answers
a) The values tend to fluctuate within a range over the quarters, with some quarters showing higher values compared to others.
b) Y represents the observed values in the time series, β0 is the intercept term, β1, β2, and β3 are the coefficients associated with the dummy variables, and ε is the error term.
c) By substituting the values of the dummy variables into the regression equation and using the estimated coefficients, we can compute the quarterly forecasts for the next year.
a. To construct a time series plot, we plot the values of the time series on the y-axis against the quarters on the x-axis.
The plot would look like this:
Year1:
Quarter 1: 71
Quarter 2: 49
Quarter 3: 58
Quarter 4: 78
Year2:
Quarter 1: 68
Quarter 2: 41
Quarter 3: 60
Quarter 4: 81
Year3:
Quarter 1: 62
Quarter 2: 51
Quarter 3: 53
Quarter 4: 72
From the time series plot, we can observe that there is a seasonal pattern in the data. The values tend to fluctuate within a range over the quarters, with some quarters showing higher values compared to others.
b. To account for the seasonal effects in the data, we can use dummy variables. We define three dummy variables: Qtr1, Qtr2, and Qtr3, where each variable takes a value of 1 if it corresponds to the respective quarter and 0 otherwise.
The estimated regression equation can be written as:
Y = β0 + β1 * Qtr1 + β2 * Qtr2 + β3 * Qtr3 + ε
Here, Y represents the observed values in the time series, β0 is the intercept term, β1, β2, and β3 are the coefficients associated with the dummy variables, and ε is the error term.
c. To compute the quarterly forecast for the next year, we need to use the estimated regression equation from part b and substitute the values of the dummy variables for each quarter of the next year.
For example, if the next year has four quarters, the quarterly forecast can be computed as:
Forecast for Quarter 1 = β0 + β1 * 1 + β2 * 0 + β3 * 0
Forecast for Quarter 2 = β0 + β1 * 0 + β2 * 1 + β3 * 0
Forecast for Quarter 3 = β0 + β1 * 0 + β2 * 0 + β3 * 1
Forecast for Quarter 4 = β0 + β1 * 0 + β2 * 0 + β3 * 0
By substituting the values of the dummy variables into the regression equation and using the estimated coefficients, we can compute the quarterly forecasts for the next year.
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Anthony earned the following amount for baby-sitting his brother over winter break: $5, $10, $10, $10, $5, $10, $20, $10, $5, $20, $20, $20, $10, $5, $5. What is the mean and median amount he earned each day?
Answers
Answer:
mean is $11
median is $10
Step-by-step explanation: