Answer:
unexpected
Explanation:
you never know when someone will get hurt
A rectangle’s length is 2 units more than twice its width. Its area is 40 square units. The equation w(2w + 2) = 40 can be used to find w, the width of the rectangle. What is the width of the rectangle? 4 units 5 units 10 units 12 units.
Given the value of the area, the width of the rectangle whose length is 2 units more than twice its width is 4 units
Option A) 4 units is the correct answer.
What is Rectangle?A rectangle is simply a 2-dimensional shape which has opposite sides equal to each other and all four angles are right angles.
Area of a rectangle is expressed as;
A = l × w
Where l is length and w is width
Given the data in the question;
Width of the rectangle = w unitsLength of the rectangle L = 2w + 2 unitsArea of the rectangle A = 40 units²Value of w = ?
We substitute our given values into the expression above.
A = l × w
40 = (2w + 2) × w
w( 2w + 2 ) = 40
2w² + 2w = 40
2w² + 2w - 40 = 0
divide through by 2
w² + w - 20 = 0
Using the quadratic formula;
x = (-b±√(b² - 4ac)) / (2a)
a = 1
b = 1
c = -20
w = (-1±√(1² - ( 4× 1 × -20 ))) / (2×1)
w = (-1±√(1 + 80)) / (2)
w = (-1±√(81)) / 2
w = (-1 ± 9) / 2
Hence
w = (-1 + 9) / 2 or (-1 - 9) / 2
w = 8/2 or -10/2
w = 4 or -5
But the width the rectangle cannot be a negative number.
Given the value of the area, the width of the rectangle whose length is 2 units more than twice its width is 4 units
Option A) 4 units is the correct answer.
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Answer:
A or 4 units
Explanation:
Which of the following is most likely to be written as an informative report.
Which value of x makes the equation 0. 75(x + 20) = 2 + 0. 5(x - 2) true?
Answer:
-56
Explanation:
From the equation:
0.75(x + 20) = 2 + 0.5(x - 2)
Open brackets
0.75x + 15 = 2 + 0.5x - 1
Collect like terms
0.75x - 0.5x = 2 - 1 - 15
0.25x = - 14
Divide both sides by 0.25
x = -56
Part b: which two of the following paragraphs best support the answers to part a?
A certain type of legal proceeding has three possible outcomes: in favor of party a, in favor of party b, or not in favor of either party. The outcomes are expected to be 40 percent, 20 percent, and 40 percent, respectively. A random sample of 40 cases is selected from a certain judge to investigate whether the judge’s outcomes are consistent with the expected outcomes. A chi-square goodness-of-fit test is conducted, and the value of the chi-square test statistic is χ2=9. 19 with a corresponding p–value of 0. 1. Assuming the conditions for inference were met, which of the following is the correct interpretation of the p–value?
Answer:
D) If the null hypothesis is true, there is a 1 percent chance of obtaining a chi-square value of at least 9.19.
Explanation:
Most of this AP question is fluff to confuse you, so make sure to emphasize the p-value and the actual question being asked.
For these interpretation problems, for chi-square GOF (goodness of fit) tests, the p-value is interpreted as such:
If the null hypothesis ([tex]H_o[/tex]) is true, there is a [[tex]p[/tex]-value] probability of obtaining a chi-square ([tex]x^2[/tex]) value of [test-statistic [tex]x^2[/tex]] or more extreme.
This answer choice fits the format the best, and is therefore the correct answer.
1. The state fair sells food coupons for $2 each and
ride coupons for $3 each. If Marlon wants to buy at
least 15 coupons and spend no more than $40, what
is the largest number of ride coupons he can buy?
4.
Answer:
11
Explanation:
Food coupons is $2 each and ride coupons is $3 each.
If Marlon spends all $40 on ride coupons, he can buy 40/3 ~ 13 coupons which is less than 15 coupons that he wants.
If he gets only 12 ride coupons, he will have 40-3*12=$4 left which will let him buy 4/2=2 food coupons. Those add up to 12+2=14 coupons which is still less than 15 coupons.
So the largest number of ride coupons he can buy is 11.
What can scientists infer about the observation of the fossils now found widely spaced across the globe that actually lived on the same early earth landmass?
Based on their observation of the fossils now found widely spaced across the globe, scientists inferred that the landmass split apart.
What is a fossil?A fossil can be defined as the mineral impression or remains of both living and non-living organisms that are generally considered to be prehistoric in nature.
This simply means that, fossils are obtained by scientists from ancient organisms such as Australopithecus, which is an ape that has the capability to walk on two (2) feet like humans, and it lived in trees.
In this context, scientists inferred that the landmass for organisms that lived on the same early Earth landmass was split apart based on their observation of the fossils, which are now found widely spaced across the globe.
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A very flexible helium-filled balloon is released from the ground into the air at 20. ∘c. The initial volume of the balloon is 5. 00 l , and the pressure is 760. Mmhg. The balloon ascends to an altitude of 20 km , where the pressure is 76. 0 mmhg and the temperature is − 50. ∘c. What is the new volume, v2 , of the balloon in liters, assuming it doesn't break or leak?
The new volume, v2, of the balloon in liters, assuming it doesn't break or leak, is 38.0546 L. To perform the calculation we will use the Boyle-Gay-Lussac law gas equation.
What is the Boyle-Gay-Lussac law?It is shown that the volume of the gas is inversely proportional to its pressure, while its volume is directly proportional to its temperature and constant pressure.
P1 x V1/T1 = P2 x V2/T2P1= Initial gas pressure
V1= Initial gas volume
P2= Final gas pressure
V2= Final volume of gas
T1= Initial gas temperature (Kelvin)
T2= Final gas temperature
Substituting the values in the formula, we have:
760 x 5 / 293 = 76 x v2 / 223 v2 = 38.0546 LFind out more about gas equation here:
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Examine a centers for disease control advertising campaign that promotes the influenza
The CDC campaign promotes the influenza vaccine by telling people they are not only protecting themselves but protecting others.
What is advertising?Advertising is a type of communication that aims at persuading. This includes persuading people to act in a specific way.
In what way is influenza promoted?Influenza vaccine is promoted using different strategies. In the case of the CDC (Centers for disease control and prevention), they released an advertisement showing a man with his shirt sleeve up and with the words "We all have a role in protecting each other".
Based on this, we can conclude this specific campaign promotes influenza by making people feel responsible for their health and others' health.
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If you want to add text to the top of every page in your document, which feature would you use?
Answer:
header
Explanation:
In word the header option will add a "header" to the top of every page.
What are the current issues and concerns in your community.
answer
probably i would say pollution
Whats yours <3
Why grade 12 learners should write their nbts as early as possible.
The reason why grade 12 learners should write their nbts as early as possible is; it is their primary requirement to go to the university and to apply for scholarship
What is the importance of writing NBT?NBT stands for national benchmark test and it is defined as a national test which must be written and passed by High school students that intend to go to the university ( i.e. passport to the university ).
Now, it is very important for grade 12 learners to write is as early as possible because it is their primary requirement to go to the university and to apply for scholarship.
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What must be true about the parts of the two triangles.
Answer:
a triangle has three sides, three vertices and three angles
Explanation:
yea
Which of the statements is/are true about anaerobic metabolism? select all that apply
The statements which are true about anaerobic metabolism are;
It occurs in the cytosol in the absence of oxygen.It provides rapid, short-term energy. What is Anaerobic respiration?Converse to aerobic respiration, anaerobic respiration does not need oxygen. It is characterized by the release of a relatively small amount of energy in cells by the breakdown of food substances in the absence of oxygen.
Remarks:
The options for the question are:
It provides rapid, short-term energy.
It leads to the maximum possible yield of ATP in a cell.
It breaks glucose down into carbon dioxide.
It occurs in the mitochondria in the presence of oxygen.
It occurs in the cytosol in the absence of oxygen.
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Two practical actions learners could take to improve their chances of receiving a bursary for tertiary education
Two learners could take to improve their chances of receiving a bursary for tertiary education by:
Appling for it early. Working hard at school. Follow the application procedures, etc.What is bursary about?Bursaries are known to be a form of financial aid that helps a person to further their education and study any course they like.
A bursary is one that can cover half or all the study fees. It is one that can also handle your transportations, housing, study material, living expenses and others.
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What role did jade and obsidian play in the mayan economy?
Answer:
Jade and obsidian were traded by the Mayan through an extensive network.
Explanation:
Consider this line graph that represents speed in centimeters/second. The x-axis is labeled in seconds; the y-axis is labeled in centimeters. Imagine that the moving object stops after 2. 5 seconds and stays stopped for 0. 5 seconds. What would the line for that time interval look like on this graph? a) b) c) d)
Answer:D
Explanation:took the test
When the author provides the details about the angels and demons, he is introducing the central idea that this love is special and enduring. Developing the central idea that this love is special and enduring. Providing a contrast to the central idea that this love is special and enduring. Providing a comparison to the central idea that this love is special and enduring
Answer:
It’s the second choice
Which of the following is not a principle of darwin’s theory of evolution?
Natural populations tend to overproduce is not a principle of Darwin’s theory of evolution.
What is Darwin’s theory of evolution?The theory of evolution was propounded Darwin because resources are limited in nature, hence evolution happens by natural selection.
Some of the principles of Darwin's theory of evolution are :
Isolated populations always produce new species.Individuals compete for limited resources.Individuals that are suited to the environment survive and reproduce.Hence, natural populations tend to overproduce is not a principle of Darwin’s theory of evolution.
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At donald's donuts the number of donut holes in a bag can vary. Help donald find the mode. 12, 10, 10, 10, 13, 12, 11, 13, 10
Answer:
Mode is 10.
Explanation:
Black figure painting is ____________________ a. A hard, white, translucent ceramic that is made by firing kaolin and other materials. B. An advanced technique allowing for more detailed figures. C. A process in which the outside rim is designed with geometric patterns consisting of horizontal and vertical lines. D. An ancient greek technique in which the figures appear as black silhouettes on red background. Please select the best answer from the choices provided a b c d
Black figure painting is an ancient Greek technique in which the figures appear as black silhouettes on red background. The correct option is D.
What is silhouettes?The term "silhouettes" describes how an object or a person appears against a lighter background with black edges or shapes.
In the ancient Greek art form known as "black figure painting," the figures are shown as black shadows against a background of red.
This method, which was mostly employed between the seventh and fifth centuries BCE, was ultimately superseded by the red-figure method.
Ancient Greeks employed black figure painting as a significant form of artistic expression to show a variety of themes from daily life, mythology, and religious rituals.
The red clay behind the black slip was revealed by scratching away the black slip, which is how the black shapes were made.
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You are studying the population growth of a species of fish. Assuming unlimited resources, no predators, and a constant per capita growth rate, if the population size in 2018 was 1100 and the population size in 2019 was 1500, what will the projected population size be in 2030? when inputting your answer, write a whole number (e. G. , 1100, 1200, 1500) without decimals. If your calculation includes decimals, round up to the nearest whole number if your decimal is 0. 5 or larger, round down if your decimal is below 0. 5.
The projected population size in 2030 will be : ≈ 44159
First step : determine the population growth rate
Gr = change in population / time
= ( 1500 - 1100 ) / 1 year
= 400 = 36%
Determine the projected population sizeapplying Malthus's population projection.
Pp = P₁ ( 1 + r )ⁿ
where ; P₁ = 1500, r = 0.36 , n = ( 2030 - 2019 ) = 11 years
Pp = 1500 ( 1 + 0.36 )¹¹
= 1500 ( 29.439 )
= 44158.5 ≈ 44159
Hence we can conclude that the projected population size as at 2030 is 44159
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Two sides of a triangle measure 8 centimeters and 13 centimeters. Which of the following could not be the length of the third side?.
Answer:
4
Explanation:
Because if you are trying to find what it can't be and so 13-1=12 and 12-8 is equal to 4. So 4 is the correct answer.
Look at figure 3. 8. Why is there no quantity supplied at a price less than $1 per slice?
You have been contracted to determine how different salts affect the ph of water. Which of the solids in the following set should you test to investigate for the effects of anions on ph?
Answer:
Hence the solids that should test to investigate the effects of cations on pH is
(Cation is Al 3+)
( Cation is Mg 2+)
( Cation is NH2+).
Explanation:
The solids in the following should you test to investigate the effects of cations on pH.
contains (Cation is Al 3+)
contains ( Cation is Mg 2+)
contains( Cation is NH2+ )
What is the conjugate acid in this reaction? hc2h3o2(aq)+h2o(l)⇌h3o++c2h3o−2(aq).
Answer:
HC2H3O2(aq) + H2O(l) → H3O⁺(aq) + C2H3O2⁻(aq)
↓ ↓ ↓ ↓
acid base acid base
Explanation: I f we consider the only forward reaction
H3O⁺ is the conjugate acid of the base H2O. For reverse reaction CH3COOH is the conjugate acid of the base CH3COO⁻.
A patient with muscular dystrophy starts to receive stem cells that generate muscle tissue. Which is the best prediction of what will happen to the patient's muscle function? muscle function should decrease because the cells would produce muscle tissue. Muscle function should increase because the cells would produce muscle tissue. Muscle function should decrease because the cells would not produce muscle tissue. Muscle function should increase because the cells would not produce muscle tissue
Answer:
Muscle function should increase because the cells would produce muscle tissue
Explanation:
Answer:
B. Muscle function should increase because the cells would produce muscle tissue.edge
If three tacos and two drinks cost $13. 00, and four tacos and one drink costs $15. 25, how much does a taco cost?
What kind of color scheme if the colors are: green, red-violet, red-orange.
Answer:
Secondary Colors
Explanation:
Secondary Colors
Cultural views that influence and affect relationships.
Answer:
no communication and cheating