Answer:
This is an observational study
Explanation:
just took the test
Which of the following statements about the administration of cpr is true?.
Explanation:
hope this will helps you
a player pays $15 to play a game in which a chip is randomly selected from a bag of chips. the bag contains 10 red chips, 4 blue chips, and 6 yellow chips. the player wins $5 if a red chip is selected, $10 if a blue chip is selected, and $20 if a yellow chip is selected. let the random variable x represent the amount won from the selection of the chip, and let the random variable w represent the total amount won, where w=x−15. what is the mean of w ?
The mean of w which represents the total amount won where w = x + 15 is;
w = -$4.5
We are given;
Winnings if a red chip is selected; x₁ = $5.
Now, there are 10 red chips in a bag of 20 chips.
Thus, the probability of this outcome is:
p₁ = 10/20
p₁ = 1/2
Winnings if a blue chip is selected; x₂ = $10
Now, there are 4 blue chips in a bag of 20 chips.
Thus, the probability of this outcome is:
p₂ = 4/20
p₂ = 1/5
Winnings if a yellow chip is selected; x₃ = $20
Now, there are 6 blue chips in a bag of 20 chips.
Thus, the probability of this outcome is:
p₃ = 6/20
p₃ = 3/10
Finally, the expected value is:
E(X) = 5(¹/₂) + 10(¹/₅) + 20(³/₁₀)
E(X) = $10.5
We are told that w = x - 15
where x is the amount won from selection of chip which is E(X) = $10.5
Thus;
w = 10.5 - 15
w = -$4.5
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One of the researchers proposes using oxygen gas production to measure reaction rates. Which of the following statements best justifies the use of the proposed modification as a way of creating an appropriate control for the investigation?.
There are different factors taken into consideration in production process. The statement that best justifies the use of the proposed modification as a way of creating an appropriate control for the investigation is that;
The experiment can be repeated without the use of guaiacol, which will therefore show the effect of guaiacol on the reaction rates.Oxygen is an element that exist naturally and can also be produced from different kinds of materials. This is often done by using a lot of different methods.
The natural method of getting oxygen is through photosynthesis where plants are known to use sunlight to convert carbon dioxide in the air into oxygen.
By not using guaiacol again when repeating the same experiment, one can therefore know if the guaiacol in one or different ways affect the chemical reaction of the elements.
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Answer:
C. The experiment can be repeated without guaiacol, which will reveal the effect of guaiacol on the reaction rates.
Explanation:
In the original experiment, the researchers used guaiacol as a reaction indicator. By using oxygen gas production to measure reaction rates, the researchers no longer need the guaiacol and can repeat the experiment without it, which will reveal the effect of guaiacol on the reaction rates.
I also got this question correct so I am sure
A puck is sitting motionless on the ice. Why does it continue to stay in one place.
Answer:
Newton’s first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. It continues to stay in one place because no force is exerted upon the puck, which means that it will continue in a line of rest.
Mi padre y yo 1 of 2 (quitar) las cortinas y 2 of 2 (limpiar) las ventanas.
For the sentence to be grammatically correct, the verbs must be conjugated in the preterite tense as follows:
Mi padre y yo quitamos las cortinas y limpiamos las ventanas. Translation: My father and I removed the curtains and cleaned the windows.The preterite tense is a verb tense that is used to describe actions that occurred prior to the moment of enunciation.
The sentence "Mi padre y yo quitamos las cortinas y limpiamos las ventanas", describes actions performed in the past.
Therefore, we can conclude that the preterite tense is a verb tense that states an action that occurred in the past.
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What does this excerpt from the poem describe? a thought-provoking walk at night a ring of street lights surrounding a park a lunar eclipse a party held at midnight.
The excerpt given above from a poem can be said to be about a thought-provoking walk at night.
The speaker:
Makes reference to street lamps, lunar incantations, and how it is midnight. Talks about how their memory is being shaken. Makes reference to how they are passing objects. Deducing the meaningThe fact that it is midnight means that this is night and the reference to the passing objects means the speaker is walking. The speaker also talks about the impact this is having on their memory.
We can therefore conclude that this is about a thought-provoking walk at night.
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Answer:
the answer is A)
Explanation:
Which of the following goods would be included in the calculation of gross domestic product? select the two correct answers.
Answer:
We need a picture?? There is no picture.
Which of the following statements about writing introductions and conclusions is true.
Answer:
✓ Always write the introduction first and the conclusion last is a statem…
Explanation:
Which r–value represents the strongest negative correlation? –0. 7 –0. 22 0. 38 0. 9.
Answer:
2
Explanation:
Because if you add 1 to 8 you get 9 then subtract 9 by 7 then and your answer is 2
Which of the following statements are true about implementing corporate change?.
The statements that are true about implementing corporate change are that:
Managers must face the need for change and the opportunity to create change.Organizations need more change leadership.You did not provide the options so I gave the correct options to two similar questions.
In order for change to be implemented in an organization, managers need to be at the forefront of it as this would then inspire their subordinates.
For this to happen, they must first be aware of the need to change and the opportunities that allow for it. This is what is meant by organizations needing more change leadership. If the leaders can see change and implement it, the company will follow.
In conclusion, implementing corporate change needs change leadership.
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How do rock types contribute to the rate of weathering?.
Find the solution to the system of equations. You can use the interactive graph below to find the solution. \begin{cases} -3x-9y=18 \\\\ 4x+3y=12 \end{cases} ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ −3x−9y=18 4x+3y=12 .
The solution to the system of equations is x = 30 and y = -36.
The two equations are known as simultaneous equations. The elimination method would be used to determine to find the solutions.
−3x−9y=18 equation 1
4x+3y=12 equation 2
In order to determine the value of x, take the following steps;
Multiply equation 2 by 3
12x + 9y = 36 equation 2
Add equation 1 and equation 2
x = 30
Substitute for x in equation 2
4(30) + 3y = 12
120 + 3y = 12
120 - 12 = -3y
108 = -3y
y = 108 / -3 = -36
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Answer:
x=6
y=-4
Explanation:
got it on khan <3
karen performs a transformation on parallelogram abcd
Cold duck airlines flies between tacoma and portland.
Answer:
continue flying until the lease expires and then drop the run.
Explanation:
Iq is determined by brainly.
Answer:
False
Explanation:
Intelligence Quotient (IQ) is a number representing a person's reasoning ability. It's determined by dividing a person's score on a special test by his or her age, then multiplying by 100
Answer:
false
Explanation:
have a good night :)
Which of the following is an example of a job surplus.
Answer:
The demand for roofers is higher than the number off people willing to do roofing
An example of a job surplus is the demand for roofers is higher than the number of people willing to do roofing. Option A
How to determine the exampleA job surplus refers to a situation in the job market where there are more available workers or job seekers than there are job openings or positions available. In other words, it's a condition where the supply of labor exceeds the demand for it in a particular field or industry.
'The demand for roofers is higher than the number of people willing to do roofing', illustrates a scenario of job surplus. This means that there are more roofing job opportunities available than there are individuals who are willing to take up the job of being a roofer.
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#SPJ2
The complete question:
Which of the following is an example of a job surplus? (1 point)
The demand for roofers is higher than the number of people willing to do roofing.**
Roofers demand more pay for the work they are doing.
The number of roofers is higher than the roofing jobs available.
There are more roofing materials being manufactured than there are houses that need them.
a system absorbs 52 joules of heat and does work using 25 joules of energy. what is the change in the internal energy of the system? 25 joules 27 joules 52 joules 77 joules
The change in the internal energy of the system is 27 joules
From the question given above, the following data were obtained:
Heat absorbed (Q) = 52 JWork (W) = –25 J (since work is done by the system) Change in internal energy (ΔU) =?The change in the internal energy of the system can be obtained as follow:
ΔU = Q + W
ΔU = 52 + (–25)
ΔU = 52 – 25
ΔU = 27 J
Therefore, the change in the internal energy of the system is 27 J
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Answer:
27 J
Explanation:
Which part of the metamorphosis contributes the most tension toward the climax.
Answer:
gregors father throws an apple at gregor, and it gets stuck in his back.
Explanation:
a p e x
A measure of the average value of a random variable is called.
Answer:
The mean can be regarded as a measure of `central location' of a random variable. It is the weighted average of the values that X can take, with weights provided by the probability distribution. The mean is also sometimes called the expected value or expectation of X and denoted by E(X).
A student combines a solution of nacl(aq) with a solution of agno3(aq), and a precipitate forms. Which of the following is the balanced net ionic equation for the formation of the precipitate?.
Taking into account the definition of net ionic equation, the net ionic equation is Na⁺(aq) + Cl⁻(aq) → AgCl(s) and a precipitate of AgCl is formed when a solution of NaCl(aq) with a solution of AgNO₃(aq) are mixed.
The net ionic equation is a chemical equation for a reaction that lists only the species that participate in the reaction.
In other words, an ionic equation is a chemical equation where electrolytes in aqueous solution are written as dissociated ions. Usually this is a salt dissolved in water, where the ionic species are followed by (aq) in the equation, to indicate that they are in aqueous solution.
The balanced equation will be:
NaCl(aq) + AgNO₃(aq) → AgNO₃(aq) + AgCl(s)
where (aq) means aqueous and (s) solid.
Taking into account that:
All Cl⁻, Br⁻ and I⁻ salts are soluble. Except for the salts that these anions form with Ag⁺, Pb²⁺ and Hg²⁺ cations. All salts of NO₃⁻, C₂H₃O₂⁻, ClO₃⁻ and ClO₄⁻ are soluble.The total ionic equation in separated aqueous solution will be:
Na⁺(aq) + Cl⁻(aq) + Ag⁺(aq) + NO₃⁻(aq) → Ag⁺ + NO₃⁻(aq) + AgCl(s)
A spectator ion is an ion that appears both as a reactant and as a product in an ionic equation.
Spectator ions can be either cations (positively charged ions) or anions (negatively charged ions).
When writing a net ionic equation, spectator ions found in the original equation are ignored. Thus, the total ionic reaction is different from the net chemical reaction.
In this case, Ag⁺ and NO₃⁻ are the spectator ions because they appear unchanged in both the product and the reagent. So these ions cancel out by writing the net ionic equation and you get:
Na⁺(aq) + Cl⁻(aq) → AgCl(s)
Since AgCl is an insoluble salt, it will precipitate.
Finally, the net ionic equation is Na⁺(aq) + Cl⁻(aq) → AgCl(s) and a precipitate of AgCl is formed when a solution of NaCl(aq) with a solution of AgNO₃(aq) are mixed.
Learn more:
brainly.com/question/18896765?referrer=searchResults brainly.com/question/10553963?referrer=searchResults brainly.com/question/7018960 brainly.com/question/24099019?referrer=searchResults brainly.com/question/10538922?referrer=searchResultsWhat differences does chromatography rely on to separate out parts of a solution.
colour
Explanation:
chromatography differentiate out parts of solutions as in the form of different colours
Answer:
Different molecule sizes
Explanation:
Separation occurs when molecules of different sizes are included or excluded from the pores within the matrix
Alice isn't sure which labor rate to use for employees in her project budget. Which employee labor rate should you tell her to use?.
Since she does not know the labor rate to use for employees in her project budget, then, i will tell her to use the employee's labor rate called Burdened rates.
What is Burdened rates?A burdened rates means the total cost incurred for hiring and maintaining the employee beyond their direct compensation in wages
The burdened rates in essence, helps to capture the labor costs on your project
In conclusion, i will tell her to use the employee's labor rate called Burdened rates.
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Sqrt is a parallelogram. If m∠qst = 72°, which of the following statements is true? m∠sqr = 72° m∠qrt = 72° m∠qsr = 36° m∠trq = 108°.
The statement that is true for parallelogram sqrt with m∠qst = 72° is that m∠qrt = 72°.
Sqrt is a parallelogram.
Parallelograms are quadrilaterals that have both pairs of opposite sides parallel.
parallelograms has both sides congruent to each other.
Parallelograms opposite angles are equal.
Consecutive angles are supplementary in a parallelogram
Therefore, If m∠qst = 72° then m∠qrt = 72°.
This follows the rules that opposite angles are congruent in a parallelogram.
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I can confirm it is QRT = 72.
I got it right on the test
Which of the following best describes the long-term impact of using a renewable energy source?.
biomass releases great house gasses when burned and this is a long term impact of a renewable energy source.
Frank has an auto policy with a coverage limit of $30,000 and a deductible of $1,000. He gets into an accident and the damages to his car total $6,200. Fortunately, he has collision coverage. How much will frank need to pay out-of-pocket?.
The amount that Frank will need to pay out-of-pocket is $1,000. A deductible refers to the amount to pay on a claim before the insurance covers the rest.
A deductible can be defined as the amount to pay “out of pocket” on a claim before the insurance covers the remaining part.
In this case, the auto insurance deductible is equal to $1,000, thereby Frank should pay this amount of money.
There are different categories of auto insurance deductibles (either low deductibles or high deductibles).
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Rocky point brewery (rpb) plans to file an initial public offering (ipo) in june 20x3. Olsen & alain, cpas (o&a) has performed calendar year end audits of rpb since 20x0 and also helps rpb prepare monthly financial statements in accordance with aicpa independence rules. O&a terminated the accounting services in december 20x2. Under sec independence rules, could rpb continue to engage o&a as its auditor when it files its ipo?.
Based on the information given about the public offering, the correct option is C. No, because the prohibited non-audit services were performed during the period covered by the financial statements.
From the complete information, it was stated that Rocky point brewery plans to file an initial public offering in June 20x3 while Olsen & Alain, cpas has performed calendar year-end audits of rpb since 20x0.
Under the security exchange commission and PCAOB, it should be noted that Rocky point brewery cannot engage O & A to be their auditors now that's it's a public company.
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How long does the earth take to complete its rotation brainly.
Answer:
since the earth completes on rotation in about 24 hours.
Drag each label to the correct location on the map. Match the western nations to their colonies. United states france great britain the netherlands.
Answer:
The United States has the Phillipines.
France had the south to china portion.
Britain has India
The Netherlands had Indonesia
Explanation:
1. United States of America: the Philippines was its colony in Southeast Asia.
2. France: the south of China was its colony in Southeast Asia.
3. Great Britain: Burma and the Malay Peninsula were its colonies in Southeast Asia.
4. The Netherlands: the Indonesian archipelago was its colony in Southeast Asia.
Imperialism can be defined as a policy or ideology (advocacy) that sought to extend a country's power, dominion, authority and influence over another country, either through the use of military force, diplomacy, or colonization (direct territorial acquisition).
This ultimately implies that, imperialism is an ideology or policy that is typically used to impose and extend a country's power, dominion, authority and influence over another country.
Note: The map in the image attached below shows the various colonies owned by different Western nations (imperialists) in 1910.
During the 19th century (1910), the following Western nations (imperialists) had these colonies in Southeast Asia:
United States of America: the Philippines was its colony in Southeast Asia.France: the south of China was its colony in Southeast Asia and they included Annam, Cambodia, Tongkin, Saigon, and Laos.Great Britain: Burma and the Malay Peninsula were its colonies in Southeast Asia.The Netherlands: the Indonesian archipelago was its colony in Southeast Asia.Read more on colonies here: https://brainly.com/question/13310941
With the use/abuse of alcohol the heart is less efficient.
Answer:
Explanation:
because it is overloading the heart with a non regular item.
there are 4 factors in the personal safety protocols
Answer:
A. Knowledge and awareness: Knowing how to recognize that an environment has dangers that must be avoided
B Ability: Be realistic in telling a co-worker that his or her ability is not sufficient to promote safe work. Example: an employee prevents a trainee from working with acids, since the trainee does not have enough capacity to handle these elements safely.
C. State of Mind: Professionals must always be aware that all team members are in emotional and psychological conditions of sufficient quality to carry out work safely. Example: a truck driver who received sad news over the phone, decides to park the truck and only drive again when he is in a better state of mind.
D. Environmental conditions: Analyze possible environmental hazards and avoid them. Example: electricians, avoid manipulating power cords in stern environments in moments of rain, as there is a risk of electroshock.
Explanation: