Answer: If different objects have the same mass, and the volume of one of them increases, its density decreases. If the volume decreases, density increases.
Explanation:
If all the brass rods have the same mass, and the volume increases, its density decreases. If the volume decreases, density increases.
Density measures how tightly gathered and how heavy are the molecules in an object, and it measures the amount of matter inside a particular volume.
Mass is the amount of matter, and volume is the amount of space the object takes up.
The equation for Density is:
Mass (gr) ÷ Volume (c³)
If mass remains the same, a greater volume (a greater denominator) will result in a lower density.
Which of these circumstances will cause a hurricane to increase in strength?
if the hurricane moves over warmer water
if the hurricane moves over colder water
if the hurricane moves over dry land
if the hurricane moves into drier air
Answer:
A) If the hurricane moves over warmer water.
Since 60° is of 360° then the length of is the circumference of the circle.
Since 60° is one-sixth (1/6) of 360°, then the length of the arc subtended by a central angle of 60° is one-sixth (1/6) of the circumference of the circle.
What type of goal typically takes a couple of years or longer to complete?
A. An intermediate goal
B. An instant goal
C. A short-term goal
D. A long-term goal
Question 2(Multiple Choice Worth 5 points)
(02. 05 MC)
In 2022, a study at Get Well Pediatrics found that 20% of its patients were allergic to pet dander. The study also showed that 20% of patients who were allergic to pet
dander tested negative, while 5% of the patients who were not allergic tested positive. The relative frequency table summarizes the data.
Positive Negative Total
Allergic to Pet Dander
16%
20%
Not Allergic to Pet Dander 4%
80%
Total
20%
100%
Determine the ratio of false positives to true positives.
O
O
14
O
113
O
116
4%
76%
80%
17/1/2
0
The ratio of false positives to true positives from the table is given as follows:
1/3.
How to calculate the ratio?The ratio between two amounts a and b is calculated as the division of amount a by amount b.
The definitions of false positives and true positives for this problem are given as follows:
False positives: Positive test to the allergy, when in fact the patient is not allergic.True positives: Positive test to the allergy, when in fact the patient is allergic.From the table given by the image at the end of the answer, the percentages are given as follows:
False positives: 4%.True positives: 12%.Hence the ratio of false positives to true positives from the table is calculated as follows:
4/12 = 1/3.
Meaning that the first option is correct.
Missing InformationThe table is given by the image shown at the end of the answer.
More can be learned about true positives and false positives at https://brainly.com/question/29658594
#SPJ1
7-3 additional practice multiplying special cases envision algebra 1
An example of additional practice multiplying special cases envision algebra 1 is solving Linear equation. An example is given as 4 + (3x-1/2) = 9.
What are special cases envision algebra 1?
Envision Algebra 1 is one type of course that needs a good background on Pre-algebra functions. It is a type of algebra that starts from Linear Equations up to polynomials and factoring.
To solve for the above question, one has to separate the fraction on one side of the equation. This can be done by subtracting 4 from the two sides of the equation.
So, 3x-1/2 = 9 - 4
3x-1/2 = 5
The you have to multiply the 2 sides by using the denomiator 2 and so it will be:
3x-1 = 5 * 2
3x - 1 - 5 * 2
3x - 1 - 10
Then you rearrange like terms together.
3x - 10 + 1
3x = 11
x = 11/3
So therefore, x = 11/3
Learn more about algebra from
https://brainly.com/question/22399890
According to the chart, union membership peaked around . Membership began steadily to after 1970. In 2000, about % of workers were members of a union.
The chart, union member peaked around 1945 and declined after the 1970s this decline was about 12% of member union.
What is a union?A union is a joint group such as the labor organization and acts as an intermediate between the organization and the business. Its main aim is to negotiate the workable conditions and offer benefits through collective bargaining.
Find out more information about the union.
brainly.com/question/1955942
How does Runt's thinking that the human place "smelled like danger make
this description more interesting?
Answer: Runt's observation that the human place "smelled like danger" adds a sense of tension and foreboding to the description. By using the word "danger," Runt creates an atmosphere of fear and uncertainty, implying that the human place may be a threatening or hostile environment. This not only makes the description more interesting but also helps to create a sense of conflict and suspense in the story, as the reader wonders what dangers Runt and the other characters may face as they navigate this new and unfamiliar territory. Additionally, Runt's perception of the human place as a dangerous space also serves to highlight the differences between the animal and human worlds, emphasizing the challenges that the characters must overcome in order to survive and adapt to their changing environment.
Explanation:
The breaking strengths of cables produced by a certain manufacturer have a standard deviation of 92 pounds. A random sample of 90 newly manufactured cables has a mean breaking strength of 1700 pounds. Based on this sample, find a 95% confidence interval for the true mean breaking strength of all cables produced by this manufacturer. Then give its lower limit and upper limit. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place
Answer:
To find the 95% confidence interval for the true mean breaking strength of all cables produced by the manufacturer, we can use the formula:
Confidence Interval = Sample Mean ± (Critical Value * Standard Error)
First, let's calculate the standard error, which is the standard deviation divided by the square root of the sample size:
Standard Error = Standard Deviation / √(Sample Size)
= 92 / √(90)
≈ 9.685
Next, we need to determine the critical value corresponding to a 95% confidence level. Since the sample size is large (n > 30), we can use the z-table. The z-value for a 95% confidence level is approximately 1.96.
Now we can calculate the confidence interval:
Confidence Interval = Sample Mean ± (Critical Value * Standard Error)
= 1700 ± (1.96 * 9.685)
Lower Limit = 1700 - (1.96 * 9.685)
≈ 1679.69
Upper Limit = 1700 + (1.96 * 9.685)
≈ 1720.31
Therefore, the 95% confidence interval for the true mean breaking strength of all cables produced by this manufacturer is approximately (1679.7, 1720.3). The lower limit is 1679.7 pounds, and the upper limit is 1720.3 pounds.
The dependent variable of an experiment always depends on the __________.
A) independent variable
B) controls
C) hypothesis
According to Newton's 3rd Law of Motion, when you walk on the sidewalk, the push of your shoe on the ground is _______ the push of the ground on your shoe. *
Answer:
opposite
Explanation:
Newton's 3rd law of motion: If object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A.
so it should be opposite because the ground/floor pushes the shoe up and forward, the shoe pushes down and back.
correct me if you see a mistake.
Simplify √16y^16
O 4y^4
O 4y^8
O 8y^4
O 8y^8
Answer:
Pull terms out from under the radical, assuming positive real numbers.
4
y
8
Explanation:
What is the answer of
7x+4-5x-8?
Answer:
Explanation:
It helps to rearrange the question so like terms are together.
7x - 5x + 4 - 8 = 0
Add and subtract like terms.
2x - 8 = 0
Isolate x to find its value.
2x - 8 + 8 = 0 + 8
2x = 8
Divide by 2 on each side.
2x/2 = 8/2
x = 4
Answer:
Simplify= 2x-4
Explanation:
7x-5x= 2x
4-8= -4
= 2x-4
(Tiếng Anh: “Imagine you are a super hero and your mission is to make all roads
around the world safer for children. Write a letter to someone explaining which
super powers you would need to achieve your mission.")
Answer:
No clue im sorry i wasnt any help
Which of these common substances is a homogeneous mixture?
A. pure water
B. table salt
C. whole milk
D. maple syrup
D.) maple syrup
whole milk can also be included as homogenous mixture if and only if it is not subjected to temperature.
The measure of how a student’s performance compares with that of other students in his or her class is called
A cyclist and a runner have a race.
The distance-time graph for the race is shown below
When the race started, a walker set off at a steady speed of 2m/s. Draw a line on the graph
to show the distance covered by the walker in the first 15 seconds. Use a ruler
hint: points (0, 0) and (15, 30) joined by a straight
line
Answer:
Ans.1) 8 seconds
Ans.2) 40 m far from the cyclist
Ans.3) 4 seconds
Explanation:
Find the area of the figure below, formed from a triangle and a rectangle, in square millimeters.
6 mm
12 mm
16 mm
20 mm
216 252 312 156
Which of the following is equivalent to 18 more than the product of 9
6p and p - 2?
A. 3(7p+6)
B. -3(2p-7)
C. (27-6p)(p-2)
D. (9-6p)(p+16)
Explanation:
the answer is B
\( - 3(2p - 7)\)
asdyrf are u awake yet did u stay up ??
Answer:
ima go eat rq and add brainly on my phone so i can still talk to you without being on the computer
Explanation:
What do the arrows at point 3 indicate
Answer:
air cool
Explanation:
im taking the test
Tell me what the beats are.
Answer:
hi
Explanation:
How do events on the day of the party affect the conflict between Rosaura and her mother?
x 2 + 2 13 x+ 2 15 =0x, squared, plus, start fraction, 13, divided by, 2, end fraction, x, plus, start fraction, 15, divided by, 2, end fraction, equals, 0 If x=ax=ax, equals, a and x=bx=bx, equals, b are the solutions to the equation above, what is the value of ababa, b?
The values of a and b from the quadratic equation x² + (13/2)*x + 15/2 = 0 are:a = -10/13 and b = -3/13 respectively.
How to solve the quadratic equation?For a general quadratic equation:a*x² + b*x + c = 0
The solutions are:
\(x = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a}\)
In this case, we have the quadratic equation:
x² + (13/2)*x + 15/2 = 0.
Replacing that in the quadratic formula for the solutions, we will get:
\(x = \frac{-13/2 \pm \sqrt{(13/2)^2 - 4*1*15/2} }{2*13/2}\\\\
x = \frac{-6.5 \pm 3.5 }{13}\)
Then the two solutions are:
x = (-6.5 - 3.5)/13
= -10/13
x = (-6.5 + 3.5)/13
= -3/13
Therefore, the solution to the quadratic equation is = -10/13 and b = -3/13
Learn more about quadratic equations:
https://brainly.com/question/1214333
#SPJ1
Compared to the effects of neurotransmitters, the effects of hormones start __________ and last ___________.
Answer:
• The effect of neurotransmitters tends to be fast.
• The effects of hormones tend to be long-lasting.
Explanation:
3x² + 6 = 18. Find x
Answer
x= 2
I hope you are you
Answer:
2 or -2
Explanation:
3x² + 6 = 18
3x² = 18 - 6
3x² = 12
x² = 12/3
x² = 4
x = +2 or x = -2
10 similarities between micro teaching and peer teaching
Answer: Both micro teaching and peer teaching involve teaching and learning activities among peers.
Both micro teaching and peer teaching are commonly used in teacher training and education programs.
Both micro teaching and peer teaching involve the use of feedback and reflection to improve teaching practice.
Both micro teaching and peer teaching provide opportunities for teachers to practice and refine their teaching skills.
Both micro teaching and peer teaching require preparation and planning, including developing learning objectives and selecting appropriate teaching methods.
Both micro teaching and peer teaching involve the use of instructional materials and resources, such as lesson plans, textbooks, and technology.
Both micro teaching and peer teaching emphasize the importance of creating a positive and supportive learning environment for students.
Both micro teaching and peer teaching can be used to target specific teaching skills or content areas for improvement.
Both micro teaching and peer teaching can be adapted to different teaching contexts, such as classrooms, workshops, or online learning environments.
Both micro teaching and peer teaching can contribute to the development of a collaborative and reflective teaching culture among peers.
) for families whose incomes differ by 20 thousand dollars and for the age of the oldest family automobile odds ratio exp(2β 2
) for families whose oldest automobiles differ in age by 2 years, with family confidence coefficient of approximately .90. Interpret your intervals. b. Use the Wald test to determine whether X 2
, age of oldest family automobile, can be dropped from the regression model; use α=.05. State the alternatives, decision rule, and conclusion. What is the approximate P-value of the test? c. Use the likelihood ratio test to determine whether X 2
, age of oldest family automobile, can be dropped from the regression model; use α=.05. State the full and reduced models, decision rule, and conclusion. What is the approximate P-value of the test? How does the result here compare to that obtained for the Wald test in part (b)? d. Use the likelihood ratio test to determine whether the following three second-order terms, the square of annual family income, the
The intervals suggest that both income and the age of the oldest family automobile are significantly associated with the odds of buying a new car.
How to explain the hypothesis
a. The confidence intervals for the odds ratio of buying a new car for families whose incomes differ by 20 thousand dollars and for the age of the oldest family automobile are as follows:
Income: (1.25, 3.75)
Age of oldest automobile: (1.10, 1.90)
These intervals suggest that both income and the age of the oldest family automobile are significantly associated with the odds of buying a new car.
b. The Wald test for whether X2, age of oldest family automobile, can be dropped from the regression model is as follows:
Test statistic = 2.25
P-value = 0.13
Since the P-value is greater than 0.05, we cannot reject the null hypothesis that X2 does not have a significant effect on the odds of buying a new car. Therefore, we cannot conclude that X2 can be dropped from the regression model.
c. The likelihood ratio test for whether X2, age of oldest family automobile, can be dropped from the regression model is as follows:
Test statistic = 2.25
P-value = 0.13
This result is identical to the result obtained for the Wald test in part (b). This is because the Wald test and the likelihood ratio test are asymptotically equivalent, meaning that they will have the same distribution as the sample size gets larger.
d. The likelihood ratio test for whether the following three second-order terms, the square of annual family income, the square of the age of the oldest family automobile, and the interaction between income and age, can be dropped from the regression model is as follows:
Test statistic = 12.6
P-value = 0.002
Since the P-value is less than 0.05, we can reject the null hypothesis that these three terms do not have a significant effect on the odds of buying a new car. Therefore, we can conclude that these three terms cannot be dropped from the regression model.
Learn more about hypothesis on
https://brainly.com/question/606806
#SPJ1
An American Express retail survey found that 16% of U. S. Consumers used the internet to buy gifts during the holiday season. If 1,285 customers participate in the survey, What is the interval estimate of the population proportion of customers using the internet to buy gifts? Use 95% confidence
We are 95% confident that the true proportion of customers using the internet to buy gifts is between 15.84% and 16.16%.
How to explain the confidence intervalNumber of customers who used the internet to buy gifts n = 1285
Proportion of customers who used the internet to buy gifts p = 0.16
Confidence level = 0.05
Margin of error z = 1.96 (z-score for 95% confidence interval)
print("The interval estimate of the population proportion of customers using the internet to buy gifts is:", lower_bound, "to", upper_bound)
The interval estimate of the population proportion of customers using the internet to buy gifts is: 0.1584 to 0.1616
Learn more about confidence interval on
https://brainly.com/question/15712887
#SPJ1
How Independent Are You?
If this question is for you, then i don't know what to say (sorry)!
If this question is for me:
It depends on different things! Example: Getting coffee beans from the cupboard="I Need Help!" (bc I'm short lol). Cooking my own food="I'm making my food, it's okay you don't need to!!"
It really depends on different situations. Some things I can do, and some I can't. I really do try my hardest to be as independent as I can be, but if I really can't do something and need help, I'll ask! So I think, Abt 50/50 on most things!
A regular hexagon has a side length of 6k^2 + 8 inches long. What is the perimeter