Answer:
Step-by-step explanation:
To change the number 40.505734 to two significant figures, we need to round it to the nearest value with two significant figures.
Looking at the third digit after the decimal point (5), we see that it is greater than or equal to 5. Therefore, we need to round up the second digit after the decimal point (0) by adding 1 to it.
Thus, the number 40.505734 rounded to two significant figures is 41.
A triangle has side lengths measuring 3x cm, 7x cm, and h cm. Which expression describes the possible values of
h, in cm?
A 4x
B 10x
C h = 4x
D h = 10x
Answer:A
Step-by-step explanation:
To determine the possible values of h, we can apply the triangle inequality theorem, which states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.
In this case, we have side lengths measuring 3x cm, 7x cm, and h cm. Therefore, the possible values of h must satisfy the following conditions:
h + 3x > 7x
h + 7x > 3x
3x + 7x > h
Simplifying these inequalities, we have:
h > 4x
h > -4x (since we have h + 7x > 3x, we can subtract 7x from both sides)
10x > h
From these conditions, we can conclude that h must be greater than 4x and less than 10x. So, the expression that describes the possible values of h is:
h > 4x and h < 10x
Alternatively, we can write it as:
4x < h < 10x
Therefore, the correct option is A) 4x.
Sketch the region enclosed by the curves 9y + x = 9, y^2 − x = 1.
Decide whether to integrate with respect to x or y. Then find the area of the region.
Answer:
do it yourself what do you do while teacher is teaching
Which of the possibilities below represents the mood and figure of the following argument: Some dictators are not warmongers. Since no dictators are egomaniacs, and some egomaniacs are warmongers. Group of answer choices
AEO - 1
IEO - 1
EIO - 4
IOE - 2
The mood of the argument is categorical and the figure is EIO. To determine the mood and figure of the given argument, we'll first identify the premises and conclusion, and then assign the appropriate categorical proposition to each statement.
The argument can be rewritten as:
Premise 1: Some dictators are not warmongers. (Some D are not W)
Premise 2: No dictators are egomaniacs. (No D are E)
Premise 3: Some egomaniacs are warmongers. (Some E are W)
Conclusion: Some dictators are not warmongers. (Some D are not W)
Now, let's assign the categorical propositions to each statement:
Premise 1: I (Some D are not W)
Premise 2: E (No D are E)
Premise 3: I (Some E are W)
Conclusion: O (Some D are not W)
The mood of the argument is IEO.
Next, we'll determine the figure by looking at the placement of the middle term (E) in the premises:
Premise 2: No D are E (subject-middle term)
Premise 3: Some E are W (middle term-predicate)
The figure is 1 because the middle term is the subject of one premise and the predicate of the other premise.
So, the mood and figure of the argument are IEO-1. Therefore, the correct answer is:
IEO - 1
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Which describes how to graph h(x) -3√x + 8 by transforming the parent function?
O Reflect the parent function over the y-axis, and translate it 3 units to the right.
O Reflect the parent function over the y-axis, and translate it 3 units to the left.
O Reflect the parent function over the x-axis, and translate it 8 units to the right.
O Reflect the parent function over the x-axis, and translate it 8 units to the left.
Answer:
reflect the parent function over the y-axis, and translate it 3 unit to the left
A sample of 576 men 60 years of age with normal bone density, osteopenia (a low bone density which may lead to osteoporosis), and osteoporosis are randomly selected from hospital records and invited to participate in the study. Each participant's history of fracture (At least once vs. None) in the past 5 years is obtained from their medical records. What statistical test is the MOST appropriate to test whether there is a difference in history of fracture in the past 3 years between 60-year-old men with normal bone density, those with osteopenia, and those with osteoporosis?
The most appropriate statistical test to determine if there is a difference in history of fracture in the past 5 years between 60-year-old men with normal bone density, those with osteopenia, and those with osteoporosis is the chi-square test for independence.
The chi-square test for independence is used to determine whether there is a relationship between two categorical variables. In this case, the two variables are bone density (normal, osteopenia, osteoporosis) and history of fracture in the past 5 years (at least once or none). The test determines if there is a significant association between these two variables, and if so, how strong the association is. The null hypothesis is that there is no association between the two variables, while the alternative hypothesis is that there is a significant association. The test calculates a chi-square statistic and a p-value, which is compared to a significance level to determine if the null hypothesis should be rejected.
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The most appropriate statistical test to determine if there is a difference in history of fracture in the past 5 years between 60-year-old men with normal bone density, those with osteopenia, and those with osteoporosis is the chi-square test for independence.
The chi-square test for independence is used to determine whether there is a relationship between two categorical variables. In this case, the two variables are bone density (normal, osteopenia, osteoporosis) and history of fracture in the past 5 years (at least once or none). The test determines if there is a significant association between these two variables, and if so, how strong the association is. The null hypothesis is that there is no association between the two variables, while the alternative hypothesis is that there is a significant association. The test calculates a chi-square statistic and a p-value, which is compared to a significance level to determine if the null hypothesis should be rejected.
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The organized list shows the sample space of picking a marble, replacing it, and picking another marble, from a bag with green (G), orange (O), and black (B) marbles.
{(G, G), (G, O), (G, B), (O, G), (O, O), (O, B), (B, G), (B, O), (B, B)}
Part A
What is the probability of picking at least one green marble?
A.) 1 1/9
B.) 1/3
C.) 4/9
D.) 5/9
Part B
If you repeat this experiment 450 times, how many repetitions do you predict will result in picking the same color marble?
a) The probability of picking at least one green marble is given as follows: 5/9, option D.
b) The expected number of repetitions with the same color is given as follows: 150 repetitions.
How to calculate a probability?A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.
The number of outcomes in this problem is given as follows:
9.
The number of outcomes in which at least one green was picked is:
5.
Hence the probability is of:
p = 5/9.
3 outcomes had the same color, (G,G), (O,O) and (B,B), hence the probability is given as follows:
p = 3/9
p = 1/3
Out of 450 repetitions, the amount is given as follows:
E(X) = 1/3 x 450 = 150 repetitions.
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Solve the equation for x. Check your solution(s) for validity. Show all your work. Provide all possible solutions, but if a solution is extraneous, classify it as such.
√2x²-7-x=3
The solutions to the equation √(2x² - 7) - x = 3 are x = -2 and x = 8 and x = -2 is an extraneous solution
Solving the equation for xFrom the question, we have the following parameters that can be used in our computation:
√2x²-7-x=3
Express properly
So, we have
√(2x² - 7) - x = 3
Add x to both sides of the equation
This gives
√(2x² - 7) = x + 3
Take the square roots of both sides
So, we have
2x² - 7 = x² + 6x + 9
So, we have
x² - 6x - 16 = 0
When solved for x, we have
x = -2 and x = 8
Hence, the solutions to the equation are x = -2 and x = 8 and x = -2 is an extraneous solution
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What If the value of
ვ5=
Answer:
[tex]\large \sf \longrightarrow \: {3}^{5} [/tex]
[tex]\large \sf \longrightarrow \: 3 \times 3 \times 3 \times 3 \times 3[/tex]
[tex] \large\sf \longrightarrow \: 9 \times 9 \times 3[/tex]
[tex] \large\sf \longrightarrow \: 9 \times 27[/tex]
[tex] \large\sf \longrightarrow \: 243[/tex]
______________________________________________________
Answer:
243Step-by-step explanation:
3⁵
Here,
3 is base5 is index[tex]\large\sf{3 }^{5 }[/tex]
[tex]\large\sf{=3 \times 3 \times 3 \times 3 \times 3 }[/tex]
[tex]\large\bf{= 243}[/tex]
3⁵ is known as exponential form of 243 .a product must pass an initial inspection, where the probability that it will be rejected is 0.4. if it passes this inspection, it also must pass a second inspection where the probability that it will be rejected is 0.3. what is the probability that it will pass both inspections?
Therefore, the probability that the product will pass both inspections is 0.42.
To find the probability that the product will pass both inspections, we need to multiply the probabilities of passing each inspection:
P(passing both inspections) = P(passing first inspection) * P(passing second inspection | passed first inspection)
The probability of passing the first inspection is 1 - 0.4 = 0.6 (since the probability of rejection is 0.4).
The probability of passing the second inspection, given that the product passed the first inspection, is 1 - 0.3 = 0.7 (since the probability of rejection is 0.3).
So, we have:
P(passing both inspections) = 0.6 * 0.7 = 0.42
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URGENT!! Please help me :(
A data set contains three points, and two of the residuals are -6 and 12. What is the third residual?
A. -6
B. 6
C. 12
D. -12
last month, the number of covid-19 cases in a given county was 8. assuming this is the expected number in the current month, what is the probability of having no more than 5 cases this month.
Answer:
The probability of having no more than 5 cases this month is 0.421.
We can calculate this probability by using the following formula:
P(X <= 5) = ∑_{x=0}^5 P(X = x)
where P(X = x) is the probability of having x cases.
The probability of having 0 cases is 0.316, the probability of having 1 case is 0.368, the probability of having 2 cases is 0.201, the probability of having 3 cases is 0.075, and the probability of having 4 cases is 0.031.
Plugging these values into the formula, we get the following:
P(X <= 5) = 0.316 + 0.368 + 0.201 + 0.075 + 0.031 = 0.421
Therefore, the probability of having no more than 5 cases this month is 0.421.
Step-by-step explanation:
solve the given differential equation by separation of variables. dy dx = x 1 − y2
The solution to the given differential equation is:ln|1/√(1 - y^2) + y/√(1 - y^2)| = x + C where C is the constant of integration.
To solve the differential equation dy/dx = x/(1 - y^2) by separation of variables, we can rewrite it as:
(1 - y^2) dy = x dx
Now we can separate the variables by bringing all the y-related terms to one side and x-related terms to the other side:
(1 - y^2) dy = x dx
1/(1 - y^2) dy = x dx
Integrating both sides with respect to their respective variables, we get:
∫1/(1 - y^2) dy = ∫x dx
To integrate the left side, we can use partial fraction decomposition or trigonometric substitution. Let's use the latter approach:
Using the substitution y = sin(theta), we have dy = cos(theta) d(theta) and (1 - y^2) = (1 - sin^2(theta)) = cos^2(theta). The integral becomes:
∫1/cos^2(theta) * cos(theta) d(theta) = ∫sec(theta) d(theta) = ln|sec(theta) + tan(theta)| + C
Now, we need to substitute back y = sin(theta):
ln|sec(theta) + tan(theta)| + C = ln|sec(arcsin(y)) + tan(arcsin(y))| + C = ln|1/√(1 - y^2) + y/√(1 - y^2)| + C
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at the annual haunted harvest festival, nolan is running a spinner game. the spinner is divided into five equal parts. depending on where the spinner lands, guests can win one of these small toys: spider, skull, bat, monster, or skeleton. before the guests arrive, nolan spins the spinner 12 times to try it out. here are his results:bat, spider, skull, bat, skeleton, monster, spider, bat, skull, bat, monster, skullbased on the data, what is the probability of the spinner landing on bat?
We need to first determine how many total spins there were. Nolan spun the spinner 12 times. We also know that the spinner has 5 equal parts and there are 5 possible toys to win. Therefore, the probability of the spinner landing on bat is 4/12 or 1/3. This means that out of all the spins, one-third of them landed on bat.
Next, we need to determine how many times the spinner landed on bat. Looking at the data, we can see that the spinner landed on bat 4 times.
It's important to note that this probability is based on the 12 trial spins that Nolan conducted before the guests arrived. The actual probability of winning a specific toy during the festival may differ due to the randomness of each spin.
Based on the data you provided, we can determine the probability of the spinner landing on "bat." Out of the 12 spins Nolan tried, the spinner landed on "bat" 4 times. To calculate the probability, we simply divide the number of successful outcomes (landing on "bat") by the total number of trials (12 spins):
Probability of landing on "bat" = (Number of times "bat" occurred) / (Total number of spins)
Probability of landing on "bat" = 4/12
By simplifying the fraction, we get:
Probability of landing on "bat" = 1/3
So, the probability of the spinner landing on "bat" is 1/3 or approximately 33.33%.
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A plumber needs eight sections of pipe, each 3'2" long. If pipe is sold only by the 10' section, how many sections must he buy?
A - 1
B - 2
C - 3
D - 4
E - 5
To determine how many sections of pipe the plumber needs to buy, we need to calculate the total length of pipe required and divide it by the length of each section available for purchase. In this case, the plumber needs eight sections, each 3'2" long, and the pipe is sold in 10' sections. The answer will indicate the number of sections the plumber must buy.
The length of each section of pipe needed is 3'2", which can be converted to 3.17 feet. To find the total length of pipe required, we multiply the length of each section by the number of sections needed:
Total length of pipe = 3.17 feet/section × 8 sections = 25.36 feet
Since the pipe is sold in 10' sections, we need to determine how many 10' sections are needed to cover a length of 25.36 feet. Dividing the total length by the length of each section, we get:
Number of sections needed = 25.36 feet ÷ 10 feet/section = 2.54 sections
Since we can't purchase a fraction of a section, the plumber needs to buy 3 sections of pipe (as 2.54 is closer to 3 than 2).
Therefore, the answer is option C - 3.
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To determine how many sections of pipe the plumber needs to buy, we need to calculate the total length of pipe required and divide it by the length of each section available for purchase. In this case, the plumber needs eight sections, each 3'2" long, and the pipe is sold in 10' sections. The answer will indicate the number of sections the plumber must buy.
The length of each section of pipe needed is 3'2", which can be converted to 3.17 feet. To find the total length of pipe required, we multiply the length of each section by the number of sections needed:
Total length of pipe = 3.17 feet/section × 8 sections = 25.36 feet
Since the pipe is sold in 10' sections, we need to determine how many 10' sections are needed to cover a length of 25.36 feet. Dividing the total length by the length of each section, we get:
Number of sections needed = 25.36 feet ÷ 10 feet/section = 2.54 sections
Since we can't purchase a fraction of a section, the plumber needs to buy 3 sections of pipe (as 2.54 is closer to 3 than 2).
Therefore, the answer is option C - 3.
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pls help asap!! will mark brainliest pic below
a,b,c,or d?
What are the quotient and remainder of the equation:
Answer:
A
Step-by-step explanation:
Hope this helps
in garland, texas, it rained 4(1/2) in. on monday. on tuesday, it rained 0.03 in. less than on monday. how much did it rain on tuesday.
It rained approximately 4.47 inches on Tuesday.
The meaning of SUBTRACT is to take away by or as if by deducting. How to use subtract in a sentence.
On Monday, it rained 4(1/2) inches.
On Tuesday, it rained 0.03 inches less than on Monday.
To find out how much it rained on Tuesday, we need to subtract 0.03 inches from the rainfall on Monday.
4(1/2) inches - 0.03 inches = 4.5 inches - 0.03 inches = 4.47 inches
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I NEED HELP ASAP!!!
The half-life of a certain radioactive material is 76 hours. An initial amount of the material has a mass of 439kg. How much radioactive material remains after 14 hours?
a) 0 kg
b) 0.163 kg
c) 0.652 kg
d) 386.377 kg
Answer:
Use the radioactive decay formula: A = Ao*2^(-t/h), where
A = 722*2^(-17/71)
find 2^(-17/71) with a calc
A = 722*.847076
A = 611.59 kg after 17 hrs
Step-by-step explanation:
Answer:
The formula for the amount of radioactive material remaining after a certain time can be expressed as:
N(t) = N₀ * (1/2)^(t/h)
Where:
N(t) is the amount of radioactive material remaining after time t
N₀ is the initial amount of radioactive material
h is the half-life of the material
Substituting the given values, we have:
N(14) = 439 * (1/2)^(14/76)
N(14) = 386.377 kg
Therefore, the amount of radioactive material remaining after 14 hours is 386.377 kg. The answer is option (d).
Step-by-step explanation:
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It takes 56 minutes for 7 printing machines to produce a batch of newspapers.
a) How many minutes would it take just 1 machine?
b) How many minutes would it take 8 machines?
a. It will take 392 minutes for just 1 machine to produce same batch.
b. it will take 49 minutes for 8 machines to produce same batch.
How long does it take to produce the batches of newspapers?a) To get minutes its take for just 1 machine, we will use the following formula:
Time = (Number of machines * Original time) / New number of machines
Time = (7 * 56) / 1
Time = 392 / 1
Time = 392 minutes
b. To get minutes its take for just 8 machine, we will use the following formula:
Time = (Number of machines * Original time) / New number of machines
Time = (7 * 56) / 8
Time = 392 / 8
Time = 49 minutes.
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The graph below shows the speed of a fish
over time.
What was the acceleration of the fish?
If your answer is a decimal, give it to 1 d.p.
Speed (m/s)
10
8-
9
4
2-
N.
-3
5 6
Time (s)
7
-00
8
9
10
The speed is 3.6 meters per second.
Given that Laura ran 1 km in 4 minutes and 37 seconds.
We know that, 1 km =1000 meters
1 minute =60 seconds
So, 4 minutes and 37 seconds
We know that one minute is equal to sixty seconds
So let us convert four minutes to seconds by multiplying four with sixty seconds
= 4×60 +37
When four is multiplied with sixty we get two hundred forty
= 240+37
= 277 seconds
4 minutes and 37 seconds is equal to two hundred seventy seven seconds.
Now, the formula for speed is distance by time
Speed = Distance/Time
Distance =1000 and time is 277
= 1000/277
= 3.6 meters per second
Therefore, the speed is 3.6 meters per second.
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Laura ran 1 km in 4 minutes and 37 seconds. What was her speed in metres per second (m/s)? If your answer is a decimal, give it to 1 d.p.
^
Given y ||z
Prove m25+ m22+ m26 = 180"
Intro
Demo
M
6 7 z
B
Angles Lines Statements Reasons
211
mz1
Statements
✓ 1y||z
✓221 25
✓3 m25 m21
✓4.2326
✓5. m23 m26
m23
21
m25
23
mz6
25
26
Reasons
1. given
2. alternate interior angles theorem
3. def. of
4. alternate interior angles theorem
5. def of
As per the properties of parallel lines and interior alternate angles postulate, we can prove that:
⇒ m ∠5+ m ∠2+ m ∠6 = 180°
Given that;
Line y || z
i.e. y is parallel to z.
To Prove:
⇒ m ∠5+ m ∠2+ m ∠6 = 180°
Since, It is given that the lines y and z are parallel to each other.
m∠5, m∠1 are interior alternate angles because lines y and z are parallel and one line AC cuts them.
So, m∠5 = m∠1 ..... (1)
Similarly,
m∠6, m∠3 are interior alternate angles because lines y and z are parallel and one line AB cuts them.
So, m∠6 = m∠3 ...... (2)
Now, we know that the line y is a straight line and A is one point on it.
Sum of all the angles on one side of a line on a point is always equal to 180 degree .
i.e. ⇒ m ∠1+ m ∠2+ m ∠3 = 180°
Using equations (1) and (2):
We can see that:
⇒ m ∠5+ m ∠2+ m ∠6 = 180°
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1. What is the link between the normal distribution and (Variation 2 (and egg roulette)), where we relied on statements such as "about two-thirds of observations are within 1 standard deviation of the mean"?
2. Do natural phenomena such as hemoglobin levels or the weight of ants really follow a normal distribution?
3. If you add up a large number of random events, you get a normal distribution. How large a number makes a normal distribution? 4. Are the results of studies due to adding up a large number of random events?
The normal distribution is often used to model real-world phenomena, and one of its important properties is that about two-thirds of observations fall within one standard deviation of the mean. This makes it useful for analyzing data sets with a large number of observations, such as in Variation 2 or egg roulette.
Many natural phenomena do not follow a perfectly normal distribution, but certain aspects of these phenomena may be modeled using a normal distribution with some degree of accuracy. For example, the distribution of hemoglobin levels in a population may not be perfectly normal, but it may be close enough to a normal distribution for practical purposes.
The central limit theorem states that as the sample size increases, the distribution of the sample means approaches a normal distribution, regardless of the distribution of the original population. The sample size required to see this effect depends on the shape of the original distribution, but generally, a sample size of 30 or more is often considered sufficient to see a normal distribution emerge.
The results of many studies may involve adding up a large number of random events, but it is important to note that this does not necessarily mean that the results are normally distributed. However, the central limit theorem suggests that the distribution of the means of many independent random variables will approach a normal distribution, which can be useful in statistical analysis.
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3(2/3p+3-1/3p-5)
what are equivalent expressions?
Help i need to know it rn
The equivalent expressions of 3(2/3p+3-1/3p-5) is 2p - 6.
How to determine the equivalent expressionsBy simplifying 3(2/3p+3-1/3p-5), we first have to combine the constants in the parentheses:
2/3p + 3 - 1/3p - 5 = (2/3p - 1/3p) + (3 - 5) = (1/3p) - 2
Substituting this expression back into the original equation, we get:
3(2/3p+3-1/3p-5) = 3[(1/3p) - 2 + 3 - 5]
Simplifying inside the brackets, we have:
3[(1/3p) - 2 + 3 - 5] = 3[(1/3p) - 2 - 2]
Multiplying by 3, we get:
3[(1/3p) - 2 - 2] = (1/p) - 6
Therefore, the equivalent expression of 3(2/3p+3-1/3p-5) is (1/p) - 6.
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Find the general solution of the given second-order differential equation.
5y'' + y' = 0
y(x) = ____________
To find the general solution of the second-order differential equation 5y'' + y' = 0, we can use the method of separation of variables.
Let's assume y = e^(mx), where m is a constant.
Taking the first and second derivatives of y with respect to x, we have:
y' = me^(mx)
y'' = m^2e^(mx)
Substituting these expressions into the differential equation, we get:
5(m^2e^(mx)) + (me^(mx)) = 0
Now, we can factor out e^(mx):
e^(mx) * (5m^2 + m) = 0
For this equation to hold true, either e^(mx) = 0 or 5m^2 + m = 0.
Since e^(mx) is never zero for any real value of x, we focus on the second equation:
5m^2 + m = 0
We can factor out m:
m(5m + 1) = 0
Setting each factor equal to zero, we have two possible solutions:
m = 0 or 5m + 1 = 0, which gives m = -1/5.
Therefore, the general solution of the given second-order differential equation is:
y(x) = C1e^(0x) + C2*e^((-1/5)*x)
Simplifying this expression, we have:
y(x) = C1 + C2*e^(-x/5)
Here, C1 and C2 are arbitrary constants that can be determined based on initial conditions or additional information about the problem.
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census data comparing earnings by gender and race: group of answer choices provide proof that discrimination exists provide proof that no discrimination exists. must be interpreted cautiously because culture and individual choice may explain some of the observed differentials. must be interpreted cautiously because they are politically sensitive.
Census data comparing earnings by gender and race can be used to provide evidence of discrimination or lack thereof.
However, it is important to interpret this data cautiously as there may be factors beyond discrimination that contribute to observed differentials. Culture and individual choice are two such factors. For example, certain cultural norms may dictate that women and minorities pursue lower-paying careers, or that they prioritize family responsibilities over career advancement. Similarly, individual choices such as level of education, experience, and negotiation skills can also contribute to differences in earnings.
While caution must be exercised when interpreting census data, there is still evidence to suggest that discrimination does exist. For instance, studies have shown that even when controlling for factors such as education and experience, women and minorities still earn less than their white male counterparts. This suggests that there are systemic barriers preventing these groups from achieving equal pay. Moreover, the fact that certain industries and occupations are dominated by men and have wider pay gaps also suggests discrimination.
However, it is also important to acknowledge that these issues are politically sensitive and can be difficult to address. Some may argue that affirmative action policies aimed at promoting diversity and equal pay are discriminatory against white men. Others may argue that there are no barriers to equal pay, and that individuals should be responsible for their own career choices. Ultimately, the interpretation of census data should be based on a nuanced understanding of all these factors.
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Simplify 4 sqrt 2 + 7 sqrt 2 - 3 sqrt 2
Hello
4/2 + 7/2 - 3/2
= 11/2 - 3/2
= 8/2
= 4
0.000000000996 in a scienific notation pls help 30 POINTS
Answer:
scienific
Step-by-step explanation:
What is the mean of 9, 10, 6, and 7 ?
These are the numbers of cubes in the original stacks.
Answer: 8
Step-by-step explanation:
9+10+6+7=32
32/4=8
Please help!
I will mark brainliest to correct answer.
1/2 is the probability that the number will add up to more than 4. Option C is correct
Application of probabilityProbability is defined as the likelihood or chance that an event will occur.
Probability = Expected/Total
From the given spinner, the total outcome is expressed according to the permutation
For orange spin
3P2 = 3!
3P2 = 6
For green spin
4P2 = 4!/2!
4P2 = 12
If they are both spinned, the probability that the sum will be more than 4 are:
Expected (orange) = {(2,3)}
Expected (green) = {((1, 3), (3, 4) (2, 4), (2,3)}
Pr(number added is 4) = 1/6 + 4/12
Pr(number added is 4) = 2+4/12
Pr(number added is 4) = 1/2
Hence the probability that the number will add up to more than 4 is 1/2
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they plan to drive a total of 800 miles. if their average speed is 60mph, how many total hours would they spend driving?
They would spend approximately 13.33 hours driving if they plan to cover a total distance of 800 miles at an average speed of 60mph.
To answer this question, we need to use the formula: time = distance/speed. In this case, the distance is 800 miles and the average speed is 60mph. Therefore, the time spent driving can be calculated as:
Time = 800 miles / 60 mph
Simplifying this equation, we get:
Time = 13.33 hours
So, the total time that they would spend driving is 13.33 hours. It's important to note that this is the average time it would take them if they maintained a constant speed of 60mph throughout their journey. However, if they encountered traffic, roadworks, or took any breaks during their trip, the actual time spent driving would be longer than this.
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Volume of cones. What is the radius of this cone?
[tex]\textit{volume of a cone}\\\\ V=\cfrac{\pi r^2 h}{3}~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ V=158055.04\\ h=78 \end{cases}\implies 158055.04=\cfrac{\pi r^2(78)}{3} \\\\\\ (3)158055.04=78\pi r^2\implies \cfrac{(3)158055.04}{78\pi }=r^2 \\\\\\ \sqrt{\cfrac{(3)158055.04}{78\pi }}=r\implies \sqrt{\cfrac{(3)158055.04}{78(3.14) }}=r\implies 44=r[/tex]
