Answer: 5
Step-by-step explanation:
Let the point where the diagonals intersect be point E.
Since the diagonals of a rhombus are perpendicular bisectors of each other, this means that:
BE = 3AE = 4AEB is a right triangleSo, using the Pythagorean theorem,
\(3^{2}+4^{2}=(AB)^{2}\\\\25=(AB)^{2}\\\\AB=5\)
So, each side of the rhombus has a length of 5.
Which of the following best describes the data?
Answer:
The data form two clusters with an overall positive associationStep-by-step explanation:
There are two clusters. They are aiming in a positive-slope-like direction so it is an overall positive association.
In addition to finding confidence intervals for population parameters, another type of inferential statistics is a test of significance, also known as: a critical value testing b margin of error calculation c hypothesis testing d level of significance testing e none of the above
In addition to finding confidence intervals for population parameters, another type of inferential statistics is a test of significance, also known as hypothesis testing.
What is hypothesis testing?Hypothesis testing is a form of statistical inference that uses data from a sample to draw conclusions about a population parameter or a population probability distribution.
This assumption is called the null hypothesis and is denoted by \(\text{H}_{\text{o}}\). An alternative hypothesis (denoted \(\text{H}_{\text{a}}\)), which is the opposite of what is stated in the null hypothesis, is then defined. The hypothesis-testing procedure involves using sample data to determine whether or not \(\text{H}_{\text{o}}\) can be rejected. If \(\text{H}_{\text{o}}\) is rejected, the statistical conclusion is that the alternative hypothesis \(\text{H}_{\text{a}}\) is true.
Hence, another type of inferential statistics is a test of significance, also known as hypothesis testing.
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Help please I don’t get it
Answer:
B
Step-by-step explanation:
when the arrow is pointing toward the left side that means less than side. When the arrow is pointing towards the right side that means greater than.
Answer:
B, because that symbol means at least so you would go to the negative side which is on the left it has to start from 4 which is correct and this means negative: - The 0 is the origin so from the origin to the left side is negative from the origin to the right side is positive you want to look for negative because it's negative 4.
Try this one → Trent is observing the growth of an insect population. He started with 125 insects and the
population doubles every month. Use x to represent the numbers of months and y to represent the insect
population. Create an equation to represent this scenario.
What is the difference between orowth & deroy functione
Answer:
Step-by-step explanation:
x represents the numbers of months and y represents the insect
population.
We are told that:
1) we start with 125 insects, and
2) the rascals double each month
Lets use m for months they double from the start of 125 insects.).
We can form an equation that will predict the insect population as a function of the numbers of months, m, from the start (125 insects).
Month 0 is 125
Month 1 would be 125*(1+1) or 125*2
We can rewrite this as 125*2^1
Month 2 125*2^2 [It dounbes again]
Month 3 125^3 [It dounbes yet again]
Month 4 125^4 [And again]
Month 5 125^5 [And so on to Infinity and Beyond]
The pattern is 125*(2)^m. where m is months since the starting month of 0.
Insect Population(m) = 125*(2)^m
See the attached graph.
What is (-8.1)-(-8.9)
Answer:
0.8
Step-by-step explanation:
-8.1+8.9=0.8
so the answer is 0.8
reconsider the expose machine of problem 3 with mean time to expose a single panel of 2 minutes with a standard deviation of 1 1/2 minutes and jobs of 60 panels. as before, failures occur after about 60 hours of run time, but now happen only between jobs (i.e., these failures do not preempt the job). repair times are the same as before. compute the effective mean and cv of the process times for the 60-panel jobs. how do these compare with the results in problem 3?
Effective mean process time = Mean of 60-panel exposure time+Mean repair time=120+240=360 minutes and coefficient of variation (CV)≈0.712
The exposure machine has a mean time of 2 minutes to expose a single panel with a standard deviation of 1 1/2 minutes. The jobs consist of 60 panels, and failures occur between jobs but do not preempt the ongoing job. Repair times remain the same as before.
To compute the effective mean and coefficient of variation (CV) of the process times for the 60-panel jobs, we need to consider the exposure time for each panel and the repair time in case of failures.
Exposure Time:
Since the exposure time for a single panel follows a normal distribution with a mean of 2 minutes and a standard deviation of 1 1/2 minutes, the exposure time for 60 panels can be approximated by the sum of 60 independent normal random variables. According to the properties of normal distribution, the sum of independent normal random variables follows a normal distribution with a mean equal to the sum of the individual means and a standard deviation equal to the square root of the sum of the individual variances.
Mean of 60-panel exposure time = 60 * 2 = 120 minutes
Standard deviation of 60-panel exposure time = √(60 * (1 1/2)²) = √(60 * (3/2)²) = √(270) ≈ 16.43 minutes
Repair Time:
The repair time remains the same as before, which is exponentially distributed with a mean of 4 hours.
Mean repair time = 4 hours = 240 minutes
Effective Mean and CV of Process Times:
The effective mean process time for the 60-panel job is the sum of the exposure time and the repair time:
Effective mean process time = Mean of 60-panel exposure time + Mean repair time = 120 + 240 = 360 minutes
The coefficient of variation (CV) for the 60-panel job can be calculated by dividing the standard deviation by the mean:
CV = (Standard deviation of 60-panel exposure time + Standard deviation of repair time) / Effective mean process time
CV = (16.43 + 240) / 360 ≈ 0.712
Comparing with the results in Problem 3, the effective mean process time for the 60-panel jobs has increased from 270 minutes to 360 minutes. The CV has also increased from 0.60 to 0.712. These changes indicate that the process variability has increased, resulting in longer overall process times for the 60-panel jobs compared to the single-panel exposure.
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Find the value of the angle θ rounded to 1 DP.
The diagram is not drawn accurately.
The measure of the indicated angle θ is approximately 39.9°.
Use the concept of a triangle defined as:
A triangle is a three-sided polygon, which has three vertices and three angles which has a sum of 180 degrees.
After labeling the figure
In triangle ABC
Sin θ = AC/AB
Sin 26° = AC/19
AC ≈ 0.44 x 19
AC ≈ 8.36
Now in Triangle ADC,
tan θ = (opposite side of θ)/(Adjacent side)
tan θ ≈ 7/8.36
tan θ ≈ 0.837
Take the inverse of tan on both sides, we get,
θ ≈ 39.9°
Hence,
The value of angle θ is approximately 39.9°.
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A new observed data point is included in set of bi-variate data. You find that the slope of the new regression line has changed from 1.7 to 1.1, and the correlation coefficient only changed from +0.60 to +0.61.
This new data point is probably a (an):
A.predicted (y) value.
B.influential point.
C.outlier.
D.extrapolation.
E.residual.
The correct option is B. influential point. An influential point refers to an observation or data point that has a significant impact on the results or conclusions of a statistical analysis.
The new observed data point is included in the set of bi-variate data.
You find that the slope of the new regression line has changed from 1.7 to 1.1, and the correlation coefficient only changed from +0.60 to +0.61. This new data point is probably an influential point.
An influential point is a data point that significantly impacts the results of the statistical analysis done. It can be an outlier, but not necessarily.
A single point can also influence the correlation coefficient, as well as the slope of the regression line. In general, an influential point has a high leverage, meaning that it has a greater impact on the model's predictions than other points.
The slope of the new regression line has changed from 1.7 to 1.1, and the correlation coefficient only changed from +0.60 to +0.61. So the new data point is an influential point.
Therefore, the correct option is B. influential point.
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Mark is in training for a bicycle race. He needs to ride 50 kilometers a week as part of his training. He rode 18.23 kilometers on Monday and 13.94 kilometers on Wednesday.
How much more does Mark need to ride to complete his training for the week?
A. 4.29 km
B. 17.83 km
C. 31.77 km
D. 36.06 km
Answer:
The answer is B, 17.83 km.
Step-by-step explanation:
To solve this, we need to first find out how many kilometers he rode for both Monday and Wednesday. To do this, add 13.94 and 18.23 together. The answer is 32.17 kilometers. Since we know he has to ride 50 kilometers for the week, we can subtract 32.17 from 50 to find the answer. Note that I didn't attempt to convert 32.17 to kilometers since that was the unit of measure it was already in. Now, after you have done 50-32.17, you will get 17.83. Put this in kilometers. This gives us our answer, which is 17.83 km. Mark needs to ride for 17.83 more kilometers to complete his training for the week.
help.......................
Answer:
68
Step-by-step explanation:
Answer:
The correct answer is 78.
7(1 - 2n) < 33 - n
solve the inequality
show work
Answer:
n > -2
Step-by-step explanation:
7(1 - 2n) < 33 - n
7 - 14n < 33 - n
Subtract 7
-14n < 26 - n
Add n
-13n < 26
Divide by -13
n > -2
Answer:
n > -2
Step-by-step explanation:
Distribution property:
7 - 14n < 33 - n
Bring n over:
7 - 13n < 33
Bring 7 over:
-13n < 26
n > -2
Due in a little it would help a lot if you could help.
Exercice 2: (4 points)
Calculer les expressions suivantes en écrivant les étapes intermédiaires.
B=(3-5-11) × 4
A=4+5 x (-3)
D=-9+ (-15): (-3) +7
C=-8-7× (-4)
Answer: 1. -13x4=-52
2. 9x(-3)=-27
3. -24: -21
4. -15x(-4)=80
Step-by-step explanation:
Solve the inequality. Graph the solution. 3x≤−54
\(x\leq -18\)
Graph Displayed Below
Hope this helps!
The solution to the given inequality \(3x \leq -54\) is \(x \leq \frac{-54}{3}\) .
Inequality is a fine statement that compares two values, showing if one is lower than, lesser than, or simply not equal to another value. Inequalities are frequently used to represent connections between amounts, similar to the relationship between the height and weight of a person, or the relationship between the speed and time of an object in stir.
We first divide the inequality \(3x \leq -54\) by 3 on both sides to obtain:
\(x \leq \frac{-54}{3}\) .
Then, we plot the line \(x = \frac{-54}{3}\) on the graph. The region left to the line thus obtained is the solution of the given question.
Thus, the line \(x \leq \frac{-54}{3}\) is plotted in the graph.
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james is in charge of the decorations. he has a total budget of $50 dollars to spend for all of the decorations. James spends $20 on one banner and would like to buy balloons that cost $2 each with the rest of money. How many balloons can James buy?
Answer:
15
Step-by-step explanation:
30 divided by 2 = 15
Answer:
Hi there!
Your answer is:
James can buy 15 balloons
Step-by-step explanation:
20 + 2x = 50$
-20
2x = 30$
/2
x= 15$
Plug back in to check yourself!
20+ 2(15) = 50
20 + 30 = 50
50 = 50
I hope this makes sense!
i need help
simplify: 4^8/4^-4
Answer:
\(4^{12}\)
Step-by-step explanation:
using the rule of exponents
\(\frac{a^{m} }{a^{n} }\) = \(a^{(m-n)}\) , then
\(\frac{4^{8} }{4^{-4} }\) = \(4^{(8-(-4))}\) = \(4^{(8+4)}\) = \(4^{12}\)
A Sample Has A Density Of 7.9 X 109 CFU/ML. What Sample Volume Should Yield A Countable Plate? 1 ML Of A 10-8 Original
To plate 1 mL of a sample that has been diluted in 0.00000001 mL of diluent, or a dilution factor of 10^8.
To determine what sample volume should yield a countable plate, we need to calculate the appropriate dilution factor.
The sample has a density of 7.9 x 10^9 CFU/mL, and we want to plate 1 mL of a 10^-8 original dilution, which means we need to dilute the sample by a factor of 10^8 to obtain a countable plate.
We can calculate the required dilution factor using the following formula:
Dilution factor = (Volume of sample plated) / (Total volume of diluted sample)
To dilute the sample by a factor of 10^8, we can calculate the total volume of diluted sample as follows:
Total volume of diluted sample = (Volume of sample plated) x (Dilution factor)
Substituting the values, we get:
10^8 = 1 mL / (Total volume of diluted sample)
Total volume of diluted sample = 1 mL / 10^8
Total volume of diluted sample = 0.00000001 mL
Therefore, to obtain a countable plate, we need to plate 1 mL of a sample that has been diluted in 0.00000001 mL of diluent, or a dilution factor of 10^8.
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Addison was given a gift card for a coffee shop. Each morning, Addison uses the card to buy one cup of coffee. Each cup of coffee costs $3 and after buying 4 cups of coffee, the card had a $3 remaining balance. Write an equation for, A, in terms of ,x, representing the amount money remaining on the card after buying x cups of coffee.
Answer:
Step-by-step explanation:
after buying x cups of coffee, we will have x/4 times remaining on the card, and every time remaining $3, so
A=3(x/4)
How do I change my UCS icon from 3D to 2D in Autocad?
In AutoCAD, you can change the UCS icon from 3D to 2D by following these steps:
Type "UCSICON" in the command line and press Enter.In the UCS Icon dialog box, select "2D Wireframe" from the drop-down menu.Click OK to close the dialog box and apply the change.What is Autocad?AutoCAD is a commercial computer-aided design and drafting software application.
Alternatively, you can also change the UCS icon to 2D by typing "UCSICON" in the command line, then pressing the F6 key. This will toggle the UCS icon between 2D and 3D.
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Find the sum plz.
3 3/15 + 4 2/5
Answer:
Exact Form:
38/5
Decimal Form:
7.6
Mixed Number Form:
7 3/5
Step-by-step explanation:
what is the best substitution to make to evaluate the integral of the quotient of e raised to the 3 times x power and the quantity 1 plus e raised to the 3 times x power, dx?
To evaluate the integral of e^(3x) / (1 + e^(3x)) dx, the best substitution to make is u = 1 + e^(3x).
Using this substitution, we can find du/dx = 3e^(3x), which implies dx = du / (3e^(3x)). Thus, the integral becomes:
integral of [e^(3x) / (1 + e^(3x))] dx = integral of [1 / (u-1)] (du / (3e^(3x)))
Now, we can replace the expression e^(3x) with (u-1) / u, and dx with du / (3e^(3x)), giving:
integral of [e^(3x) / (1 + e^(3x))] dx = integral of [1 / (u-1)] (du / (3(u-1))) = (1/3) ln|u-1| + C
Finally, we can substitute back u = 1 + e^(3x) to obtain:
integral of [e^(3x) / (1 + e^(3x))] dx = (1/3) ln|1+e^(3x)-1| + C = (1/3) ln|e^(3x)| + C = (1/3) (3x) + C = x + C, where C is the constant of integration.
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A regular bag of banana chips contains 12 ounces. A jumbo bag contains 166 2/3% more cihps. How many ounces does the jumbo bag contain?
Answer:
32 ounces
Step-by-step explanation:
size of the jumbo = size of the regular bag + value of the percentage increase
percentage increase = 12 x 166 2/3%
= 12 x 1.6667
= 20
20 + 12 = 32 ounces
Work out the angle marked x in each diagram you must show your working
Anwser: 41°
Okay so every triangle is 180° degrees in total.
We need to find the angle of x in the triangle BDC.
We know that the angle of x is 180 - ( x + 15)
We also have another triangle named BAD
Which angles are 90 + 56 + x
the angle of D in the triangle BDC is 180 -58 = 124
So 124 + 15 = 139
180 - 139 = 41
se the Bonferroni method to perform multiple comparisons of the four levels of treatments at the 0.01 level
For each pairwise comparison, you would compare the p-value against an adjusted significance level of approximately 0.00167 to determine if the difference between the treatments is statistically significant after applying the Bonferroni correction.
The Bonferroni method is a statistical procedure used to adjust the significance level for multiple comparisons in order to control the familywise error rate. To perform multiple comparisons using the Bonferroni method at the 0.01 level, you would divide the desired overall significance level (0.01) by the number of pairwise comparisons being made.
If you have four levels of treatments and want to compare each pair of treatments, you would have a total of six pairwise comparisons: A vs. B, A vs. C, A vs. D, B vs. C, B vs. D, and C vs. D.
To apply the Bonferroni correction, divide the desired overall significance level of 0.01 by the number of comparisons (6):
Adjusted significance level = 0.01 / 6
The adjusted significance level for each individual comparison would then be:
Adjusted significance level = 0.01 / 6 ≈ 0.00167
So, for each pairwise comparison, you would compare the p-value against an adjusted significance level of approximately 0.00167 to determine if the difference between the treatments is statistically significant after applying the Bonferroni correction.
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A class has 14 boys and 18 girls write the ration in its lowest terms
The ratio of boys to girls in its lowest terms is 7/9.
The class is having Number of boys = 14 and
Number of girls = 18
Now we will compare the two quantities in terms of ‘how many times’. This comparison is known as the Ratio. We denote ratio using symbol ‘:’
The ratio of boys to girls in its lowest terms can be found by dividing number of boys by number of girls.
=Number of boys/Number of girls
= 14/18
=7/9
Hence the ratio of boys to girls in its lowest terms is 7/9, which is also denoted as 7:9
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The average expenditure for hip replacement is $12,485 for country A and 14,438 for country B. the P value(two tailed) is 0.063. What do the data determine in this scenario? a. if average expenditure in country A can predict expenditure in country B b. if there is a relationship in average expenditure between the two countries c. if there is difference in average expenditure between the two countries d. if the average expenditure in country A and country B are normally distributed A sample of rural residents was surveyed to determine the number of times for residents saw a primary care provider in one year. On average, the participants saw their provider 3.3 times per year. ( 95% confidence interval 0.1 to 6.1 ) why was this of statistical use for this sample? a. It was a count variable b. It was a categorical variable c. It is a binary variable d. It is a ratio variable Administrators at a rural hospital want to determine causes for their financial distress. In doing so, they have identified that the average operating margin for a rural hospital is −1.32% (stander deviation is ±0.89% ) Why is the average operating margin appropriate to use in this situation? a. It is a measure of the fifth percentile b. it identifies the range of the data c. it identifies the outliers in the data d. it is a measure of central tendency Ebola is transmitted through human contact. although relief agencies sent medical team to provide treatment the impacted communities prefer to maintain isolation against outsiders. the distrust of outsiders 'cause a hesitancy to accept treatment. which consideration factor will ultimately contribute to the spread of Ebola? a. the influence of non-indigenous people b. the population density of the affected area c. dry and air climates which suits the virus d. the cultural influence of the community Last year a developing country had 1500 reported cases of malaria. during that time there were 400 deaths reported from the disease: 300 of the disease were people over age 18 , in 100 deaths were people underage 18 . What is the case fatality rate? 100∗100/400=25 400∗10/1500=2.67 100∗10/400=2.5 400∗100/1500=26.67
The case fatality rate is 400 * 100 / 1500 = 26.67 (option d).
For the first scenario, the data determine that there is a difference in average expenditure between the two countries (option c). The P-value of 0.063 suggests that there is a moderate level of statistical significance, indicating that the difference in average expenditure is likely not due to random chance.
In the second scenario, the fact that the 95% confidence interval for the average number of times participants saw their provider per year (3.3) ranges from 0.1 to 6.1 is of statistical use because it provides a range estimate within which the true population means is likely to fall. This interval helps account for the uncertainty associated with the sample estimate and provides a measure of the precision of the estimate (option a).
For the third scenario, the average operating margin is appropriate to use because it is a measure of central tendency that represents the typical financial performance of rural hospitals. The standard deviation provides information about the variability of the operating margins (option d).
In the fourth scenario, the consideration factor that will ultimately contribute to the spread of Ebola is the population density of the affected area (option b). While factors like the influence of non-indigenous people and climatic conditions may play a role, population density is a key determinant in the transmission and spread of infectious diseases.
For the fifth scenario, the case fatality rate is calculated by dividing the number of deaths from the disease (400) by the total reported cases (1500) and multiplying by 100. Therefore, the correct calculation is 400 * 100 / 1500 = 26.67 (option d). This indicates that the case fatality rate is approximately 26.67%.
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60x24 please help cant look it up free and ez points
Answer:
1440
Step-by-step explanation:
60x24 = 1440
hope this helps
Answer:
\(60*24=1440\)
Step-by-Step Explanation:
~Kandy~
Hope this helped!
Brainliest Please!
-у+25=12у-1
Решите пожалуйста прямо сейчас уравнение
Answer: 2
Step-by-step explanation:
−y + 25 = 12y − 1
Переместите все члены, содержащие y, в левую часть уравнения
Вычтем 12y из обеих частей уравнения.
−y + 25 − 12y = −1
Вычтем 12y из −y.
−13y + 25 = −1
Переместите все члены, не содержащие y, в правую часть уравнения.
Вычтем 25 из обеих частей уравнения.
−13y = −1 − 25
Вычтем 25 из −1.
−13y = −26
Разделите каждый член на −13 и упростите.
Разделите каждый член в −13y = −26 на −13.
−13y /-13 = -26/-13
Сократить общий множитель −13.
−26 /-13
Разделим −26 на −13.
y = 2
How do the expressions 8+k2−6 and 8(k+2)−4k compare when k = 7?
Drag a symbol into the box to correctly complete the statement.
8+k2−6 Response area 8(k+2)−4k when k = 7.
A. =
B. >
C.
Answer:
8+k2-6>8(k+2)-4k
Step-by-step explanation:
8+7×2-6 and 8(7+2)-4×7
8+14-16 and (56+16)-28
6 and 44
Read the part of a letter. Dear Nana, I am so glad you came to our house for dinner on Sunday, and I appreciate your kind birthday wishes. I love the journal you gave me, and I will treasure it. Every night, I have been recording my thoughts. What describes the type and purpose of this letter? It is a friendly letter written to express thanks. It is a business letter written to offer information. It is a persuasive letter written to suggest a change. It is a friendly letter written to make future plans.
Answer:
Step-by-step explanation:
A