Answer:
5/3
Step-by-step explanation:
To find the slope, we use the slope formula
m = ( y2-y1)/(x2-x1)
= ( 4 - -1)/ ( 6-3)
= ( 4+1)/(6-3)
5/3
Answer:
The slope of the line is 5/3.
Procedure:
M = Y2 - Y1
X2 - X1
M = 4 - (-1)
6 - 3
M = 5
3
A research team is testing the hypothesis that exercise increases happiness. What step must they complete next
The research team, after formulating the hypothesis that exercise increases happiness, needs to design and conduct an experiment to test this hypothesis.
The next step would be to plan and implement a study that allows them to collect data and analyze whether exercise has a positive impact on happiness.
Define the variables: Clearly define the variables involved, such as the independent variable (exercise) and the dependent variable (happiness).
Design the study: Determine the study design that will best test the hypothesis. This could involve selecting the sample population, deciding on the duration and intensity of exercise, and considering control groups or randomization techniques.
Collect data: Implement the study by gathering data on exercise habits and measuring happiness levels. This may involve surveys, questionnaires, or other measurement techniques.
Analyze the data: Use statistical analysis methods to examine the collected data and determine if there is a significant relationship between exercise and happiness. This could involve comparing means, conducting correlation analyses, or employing other appropriate statistical tests.
Draw conclusions: Based on the analysis, interpret the findings and draw conclusions regarding the hypothesis. Determine whether the data supports or refutes the hypothesis that exercise increases happiness.
Communicate the results: Share the findings with the scientific community through research papers, presentations, or other appropriate channels. This step allows other researchers to review and replicate the study.
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a helicopter is lifting an 800-pound unit at a rate of 200 feet per minute. how much horsepower, of work energy, is the helicopter using in the process?
4.84 HP is the amount of work energy used.
Given info,
A helicopter is lifting an 800-pound unit at a rate of 200 feet per minute.
1 horsepower = 550 foot-pounds per second
⇒ 800 x 200 = 160,000 foot-pounds per minute
= 160,000/60 foot pounds per second.
Horsepower = 160,000/60 * 550 = 428/33
= 4.848 HP
Therefore, the horsepower of work energy used is 4.84 HP
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A researcher wondered what the average SAT score is for all current students at the University of Michigan. Based on a random sample of 30 students, she reports that the average SAT score for all current students at the University of Michigan is 1222 with a margin of error of 30.
1. Is the average of 1222 reported by the student calculated from a sample or the whole population?
2. Use the margin of error to give an interval of possible values for the true mean of the whole population.
3. Do we know that every current student at the University of Michigan has an SAT score within the interval you constructed in #2? Explain.
4. Why do we need to report a margin of error along with the estimate? Answer each item with a yes or no.
• Some students might have lied when asked about their SAT score.
• The researcher may have recorded the wrong values for some of the SAT scores.
• Due to sampling variability. Every random sample produces different estimates.
1. The average of 1222 is calculated from a sample, not the whole population.
2. The interval of possible values for the true mean of the whole population, given the margin of error, is 1192 to 1252.
3. No, we don't know that every current student at the University of Michigan has an SAT score within this interval.
Yes, a margin of error is reported due to:
Potential dishonesty from students.Possible recording errors by the researcher.Inherent sampling variability.How to find the intervalNo, we don't know that every current student at the University of Michigan has an SAT score within this interval. The interval only estimates the average SAT score for the entire student population, not individual scores.
Yes, a margin of error is reported due to:
Potential dishonesty from students.Possible recording errors by the researcher.Inherent sampling variability.''Read more about margin of error here:
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Triangle BCD, with vertices B(4,-7), C(6,-8), and D(7,-2), is drawn on the coordinate
grid below.
S
Answer: A =
6
7
D
9
What is the area, in square units, of triangle BCD?
units
Submit Answer
K
Answer: The area is 6.5
Identify the figure by name, find the lateral area and the total surface area of the figure below. Be careful here because this figure may not be laying down on its base. Identify the figure first.
Answer:
Name of the figure: Cone
Lateral Area: 770.66
Total Surface Area: 1084.82
Explanation:
We identify the figure as a cone.
The lateral surface area of a cone is given by
\(A_L=\pi r\sqrt{r^2+h^2}\)The total surface area includes the area of the base as well.
Since the area of the base is
\(A_B=\pi r^2\)The total surface area then is
\(A_{tot}=A_L+A_B=\pi r\sqrt{r^2+h^2}+\pi r^2\)where
r = radius of the base
h = height of the cone.
Now in our case
r = 20/2 = 10
h = 22.4
therefore,
\(A_L=\pi(10)\sqrt{(10)^2+(22.4)^2}=770.66\)\(A_B=\pi(10)^2=314.16\)Therefore,
\(A_{tot}=A_L+A_B=770.66+314.16\)\(\Rightarrow\boxed{A_{tot}=1084.82.}\)Hence, to summerise,
Name of the figure: Cone
Lateral Area: 770.66
Total Surface Area: 1084.82
The slope of the line that passes through the points (9,11) and (3,6) is what?
Answer:y= -5
X=-6
-5/6
Step-by-step explanation:
Alejandro and Noya were told to draw a net for an octagonal prism. Which statement about the students' nets is true?
Complete question is;
Alejandro and Noya were told to draw a net for an octagonal prism. Which statement about the students’ nets is true? Both nets do not form octagonal prisms.
A) Only Alejandro’s net is correct.
B) Only Noya’s net is correct.
C) Neither net is correct.
D) Both nets are correct.
Answer:
C) Neither net is correct.
Step-by-step explanation:
From the second attached image, we can see what an octagonal prism looks like when it is opened to show all the faces.
However, looking at the first attached image showing the net drawings of boya and Alejandro, it is very clear that none of them got the required shape for the octagonal prism. Therefore, we can conclude that neither of the nets are correct.
Will mark brainliest
Answer:
350
Step-by-step explanation:
A group of friends wants to go to the amusement park. They have $143.25 to spend
on parking and admission. Parking is $11.25, and tickets cost $22 per person,
including tax. How many people can go to the amusement park?
Please help!!!!
Answer:
6 people can go
Step-by-step explanation:
143.25 - 11.25 = 132
132/22=6
In statistical process control, when a point falls outside of control limits, the probability is quite high that the process is experiencing _____________ .
A. common cause variation
B. student t variation
C. a reduction of variables
D. special cause variation
When a point falls outside of control limits in statistical process control, the probability is quite high that the process is experiencing special cause variation.
In statistical process control (SPC), control limits are used to define the range within which a process is expected to operate under normal or common cause variation. Common cause variation refers to the inherent variability of a process that is predictable and expected.
On the other hand, special cause variation, also known as assignable cause variation, refers to factors or events that are not part of the normal process variation. These are typically sporadic, non-random events that have a significant impact on the process, leading to points falling outside of control limits.
When a point falls outside of control limits, it indicates that the process is exhibiting a level of variation that cannot be attributed to common causes alone. Instead, it suggests the presence of specific, identifiable causes that are influencing the process. These causes may include equipment malfunctions, operator errors, material defects, or other significant factors that introduce variability into the process.
Therefore, when a point falls outside of control limits in statistical process control, it is highly likely that the process is experiencing special cause variation, which requires investigation and corrective action to identify and address the underlying factors responsible for the out-of-control situation.
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What is the solution to this equation?
5x+15 + 2x = 24 +4x
A. x = 3
B. x=9/11
C. x = 13
D. x =39/11
Answer:
the answer is A x = 3
Step-by-step explanation:
5x + 15 +2x = 24 + 4x
or, 5x + 2x - 4x = 24 - 15
or, 3x = 9
or, x = 9/3
x = 3
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An article in parenting magazine (dec/jan 2004) reported that 60% of americans surveyed say that they need a vacation after visiting family for the holidays. suppose the true proportion of all americans who need a vacation after visiting family for the holidays is indeed 60%. a simple random sample is taken of 150 americans. what is the probability that less than 50% of the people in the sample say that they need a vacation after visiting family for the holidays
The probability that less than 50% of the people in the sample say that they need a vacation after visiting family for the holidays is 0.0062.
Let p be the proportion of Americans in the sample who say they need a vacation after visiting family for holidays.
In this case, p0 = 0.60 (true proportion);
and n = 150.
Since:
n * p = (150) * (0.6) = 90 is ≥ 10; and
n * (1 - 0.6) = (150) * (0.4) = 60 is ≥ 10,
then we can apply the Normal Approximation for Binomial Distribution.
So,
Mean = p0
SD = √ (p0 (1–p0) / n).
Then:
Mean = p0 = 0.60
SD = √ (p0 (1–p0) / n) = √ (0.60 (1–0.60) / 150) = 0.04
Thus, the required probability is:
P (p ≤ 0.50) = P (z < (0.50–0.60) / 0.04) = P (z < –2.5) = 1 – P (z < 2.5) = 1 – 0.9938 = 0.0062.
Hence, the probability that less than 50% of the people in the sample say that they need a vacation after visiting family for the holidays is 0.0062.
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Alan has a guessing game on his computer.
He estimates that the probability of winning each game is 0.35
Alan decides to play 20 of these games.
How many of these games should he expect to win?
Answer:7
Step-by-step explanation:
100/20 = 5
35/5 = 7
need help on worksheet
Answer:
-2, -1, 0, 1, 2
Step-by-step explanation:
Henry bought a CD on sale for 75% off of the regular price. He paid $8.88. What was the regular price?
A monopolistic firm is producing a single product and is selling it to two different markets, i.e., market 1 and market 2. The demand functions for the product in the two markets are, respectively, P1 = 10-20, and P2 = 20-Q, where P, and P, are prices charged in each market. Also assume that the cost function for producing the single product is, TC = 215 + 4Q where Q = Q1 + Q is total output. Find the profit-maximizing levels of , and Qz, and P, and P2. Must show complete work and make sure to check the second-order conditions for a maximum
After calculations we come to know that the profit-maximizing levels of Q1, Q2, P1, and P2 are $10 and the solution is maximum.
The demand functions for the product in the two markets are, respectively, P1 = 10-20, and P2 = 20-Q, where P, and P, are prices charged in each market. Also assume that the cost function for producing the single product is, TC = 215 + 4Q where Q = Q1 + Q2 is total output.
We need to find the profit-maximizing levels of Q1, Q2, P1, and P2.1) To find the demand function, we need to differentiate the given demand function with respect to price. So, we haveQ1 = 10 - P1Q2 = 20 - P22) We know that, TR = P*Q. So, for each market, TR1 = P1 * Q1TR2 = P2 * Q23)
Now, we can get the expression for profits as follows :π1 = TR1 - TCπ2 = TR2 - TC Where TC = 215 + 4Q And, Q = Q1 + Q2= Q1 + (20 - P2)
Hence,π1 = (10 - P1) (10 - P1 - 20) - (215 + 4Q1 + 4(20 - P2))π2 = (20 - Q2) (Q2) - (215 + 4Q2 + 4Q1)
Expanding and simplifying π1 = -P1^2 + 20P1 - Q1 - 435 - 4Q2π2 = -Q2^2 + 20Q2 - Q1 - 215 - 4Q1
Now, we need to differentiate π1 and π2 with respect to P1, Q1, and Q2 respectively, to get the first-order conditions as below:∂π1/∂P1 = -2P1 + 20= 0∂π1/∂Q1 = -1= 0∂π1/∂Q2 = -4= 0∂π2/∂Q2 = -2Q2 + 20 - 4Q1= 0∂π2/∂Q1 = -1 - 4Q2= 0
Now, we can solve these equations to get the optimal values of P1, P2, Q1, and Q2. After solving these equations, we get the following optimal values:P1 = $10P2 = $10Q1 = 0Q2 = 5
Therefore, the profit-maximizing levels of Q1, Q2, P1, and P2 are as follows:Q1 = 0Q2 = 5P1 = $10P2 = $10
The Second-Order Condition: To check whether the solution obtained is a maximum, we need to check the second-order conditions. So, we calculate the following:∂^2π1/∂P1^2 = -2<0;
Hence, it is a maximum.∂^2π1/∂Q1^2 = 0∂^2π1/∂Q2^2 = 0∂^2π2/∂Q2^2 = -2<0; Hence, it is a maximum.∂^2π2/∂Q1^2 = 0
Hence, the solution is maximum.
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the formula for calculating the value after an increase by multiplying the original value by the percent for a new value is: value after increase
The formula to calculate the new value after an increase is to multiply the original value by the percentage of the increase.
The formula to calculate the new value after an increase is to multiply the original value by the percent of the increase. For example, if the original value is $100 and the increase is 10%, the new value would be $100 x 1.10 = $110. This formula can be applied to any original value and any percentage increase. It is useful for calculating the new value after applying a percentage increase, such as when calculating a pay raise or the cost of goods after a price increase. The formula can also be applied to calculate the new value after a percentage decrease, by multiplying the original value by 1 minus the percentage of the decrease.
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The complete question is
the formula for calculating the value after an increase by multiplying the original value by the percent for a new value is: value after increase by multiplying the original value by the percent for a new value?
A forest fire is burning in a valley. Officials estimate that if the fire burns for h hours, the cost of the lost timber is 1000h dollars. They estimate that x firefighters can stop the fire in 0 hours. The cost for each firefighter is $20 (for transportation) plus $25 per hour (for salary, meals, and other overhead). A. Let C be the cost ofthe fire (including the cost of the firefighters and the lost timber). C will depend on both h (how many hours the fire burns) and x (the number of firefighters sent to fight it). Give a formula for C in terms of x and h C. B. Give a formula that relates x and h.
C. How many firefighters should be used if the cost C of the fire is to be minimized? Justify your solution
a. we can express C as C = 1000h + x(20 + 25h). b. e can express h as a function of x as h = k/x. c. the optimal number of firefighters depends on the nature of the fire and the firefighting equipment used.
A. The cost of the fire, C, can be expressed as the sum of the cost of the lost timber and the cost of the firefighters. The cost of the lost timber is given by 1000h, and the cost of the firefighters is given by the product of the number of firefighters (x), the total hours worked (h), and the cost per firefighter (20 + 25h). Therefore, we can express C as:
C = 1000h + x(20 + 25h)
B. We are given that x firefighters can stop the fire in 0 hours, which means that the rate at which the fire is extinguished is proportional to the number of firefighters. Therefore, we can express h as a function of x as follows:
h = k/x
where k is a constant of proportionality that depends on the nature of the fire and the firefighting equipment.
C. To find the number of firefighters that should be used to minimize the cost of the fire, we need to find the value of x that minimizes the function C. To do this, we can take the derivative of C with respect to x and set it equal to zero:
dC/dx = 20 + 25h - k/x^2 = 0
Substituting the expression for h in terms of x, we get:
20 + 25(k/x^2) - k/x^2 = 0
Simplifying, we get:
k/x^2 = 20/5
x^2 = k/4
This shows that x should be inversely proportional to the square root of k. Since k is a constant that depends on the nature of the fire, we cannot determine its value without additional information. However, we can conclude that as k increases, the optimal number of firefighters decreases, and as k decreases, the optimal number of firefighters increases. Therefore, the optimal number of firefighters depends on the nature of the fire and the firefighting equipment used.
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the table below displays some of the results of last summer's frostbite falls fishing festival, showing how many contestants caught fish for various values of . in the newspaper story covering the event, it was reported that (a) the winner caught fish; (b) those who caught or more fish averaged fish each; (c) those who caught or fewer fish averaged fish each. what was the total number of fish caught during the festival?
The total number of fish caught during the festival can be calculated by adding the number of fish caught for each value of n.
For example, if 10 contestants caught 4 fish, 5 caught 8 fish, 7 caught 10 fish, and 8 caught 7 fish, the total number of fish caught would be 104 + 58 + 710 + 87 = 330.
The argument states that the total number of fish caught during the Frostbite Falls Fishing Festival can be determined by adding the number of fish caught by each contestant.
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One acre of Christmas trees produces the daily oxygen requirement for how many people?
Answer: 18
Step-by-step explanation:
Paula's room is 11 feet wide and 13 feet long. What is the area of her room?
Answer:
143
Step-by-step explanation:
11x13=143
Answer: 143
Step-by-step explanation: L * W =A so, 11 multiplied by 13 gives you 143
Solve the inequality. Graph the solution set. (2-3x) 127 The solution set in interval notation is (Simplify your answer. Type your answer in interval notation. Use integers or fractions for any number
The solution of the inequality (2 - 3x) > 127 is:
-41.66 > x
The graph is on the image at the end.
How to solve the inequality?Here we have the inequality:
(2 - 3x) > 127
(We assume is that one, the symbol is missing)
To solve this, we need to isolate the variable x, then we will get:
2 - 3x > 127
-3x > 127 - 2 = 125
-125 > 3x
-125/3 > x
-41.66 > x
The graph of this inequality will be a line that starts with an open circle at -41.66 and then an arrow that goes to the left, the graph is on the image below.
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can someone please help me to do this answer
What is the sum of -4/5 and -3/5
Answer:
-7/5
Step-by-step explanation:
It is given that,
→ (-4/5) + (-3/5) = ?
Let's solve the problem,
→ (-4/5) + (-3/5)
→ (-4/5) - (3/5)
→ (-4 - 3)/5 = -7/5
Thus, the answer is -7/5.
Can someone please help me with these 2 problems I’ve been stuck on them for awhile :’) tysm!
Answer:
48. 95,400 mL
50a. 331 yds.
50b. 11,916 in.
Step-by-step explanation:
Some helpful conversions can solve this for you :)
1 liter = 1000 mL
1 yard = 3 feet
1 feet = 12 inches
Now we get started!
48. We have 95.4 Liters, multiply by 1000 because 1000 mL per Liter. Therefore it's 95,400.
50
a. 3 feet per yard, so 993 feet divided by 3 is 331 yards.
b. 12 inches per foot, so 993 feet multiplied by 12 is 11,916
what is 89 add 78
first ti answer wins brainleast
89+78=167
Hope this helps
-Moiselle
At Alexandra's Orchards, 99% of the trees are apple trees. Across town at Zachary's Orchards, 558 out of 563 trees are apple trees. Which orchards have a greater percentage of apple trees?
Answer:
Zachary's Orchards
Step-by-step explanation:
We are already given the percent of trees at Alexandra's Orchards, so nothing to do here, yet.
Zachary's Orchards we could find by dividing the trees over the total.
558/563 = .9911
Multiply by 10 in order to get a whole number
.9911 * 10 = 99.11
Hence, Zachary's Orchards have a greater percentage
what is the long leg of a 30 60 90 triangle when the hypothesis is 8 root 6
Which of the following is not a type of effectiveness MIS metric?
Customer satisfaction
Conversion rates
Financial
Response time
"Financial" as it is not an effectiveness MIS metric.
To determine which one is not an effectiveness MIS metric, we need to understand the purpose of these metrics. Effectiveness MIS metrics measure how well a system is achieving its intended goals and objectives.
Customer satisfaction is a common metric used to assess the effectiveness of a system. It measures how satisfied customers are with the product or service provided.
Conversion rates refer to the percentage of website visitors who complete a desired action, such as making a purchase. This metric is often used to assess the effectiveness of marketing efforts.
Financial metrics, such as revenue and profit, are crucial indicators of a system's effectiveness in generating financial returns.
Response time measures the speed at which a system responds to user requests, which is an important metric for evaluating system performance.
Therefore, based on the given options, "Financial" is not a type of effectiveness MIS metric. It is a separate category of metrics that focuses on financial performance rather than the overall effectiveness of a system.
In summary, the answer is "Financial" as it is not an effectiveness MIS metric.
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When I have the problem (x−2)^2, why is the answer not x^2−4 or x^2+4?
Answer:
We need to square a binomial.
The following rule is applied:
In our example,
is equal to ,
is equal to and
is equal to .
Step-by-step explanation: