The base of the right triangle is 3/2 ft.
The area of a right triangle is given by the formula:
Area = (base × height) / 2
We are given that the area of the triangle is 9/16 sq. ft. and the height is 3/4 ft. So, substituting these values in the above formula, we get:
9/16 = (base × 3/4) / 2
Multiplying both sides by 2, we get:
9/8 = base × 3/4
Dividing both sides by 3/4, we get:
9/8 ÷ 3/4 = base
Simplifying, we get:
9/8 × 4/3 = base
3/2 = base
Therefore, the base of the right triangle is 3/2 ft.
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A roulette wheel consists of 38 slots, numbered 0, 00, 1, 2,. , 36. To play the game, a metal ball is spun around the wheel and allowed to fall into one of the numbered slots. The slots numbered 0 and 00 are green, the odd numbers are red, and the even numbers are black. (a) Determine the probability that the metal ball falls into a green slot. Interpret this probability. (b) Determine the probability that the metal ball falls into a green or a red slot. Interpret this probability. (c) Determine the probability that the metal ball falls into 00 or a red slot. Interpret this probability (d) Determine the probability that the metal ball falls into the number 31 and a black slot simultaneously. What term is used to describe this event? (a) P(green) = ___ (Type an integer or decimal rounded to four decimal places as needed. ) If the wheel is spun 100 times, one would expect about __ spin(s) to end with the ball in a green slot. (Round to the nearest integer as needed. ) (b) P(green or red) = ___
(Type an integer or decimal rounded to four decimal places as needed. ) If the wheel is spun 100 times, one would expect about __ spin(s) to end with the ball in either a green or red slot. (Round to the nearest integer as needed. ) (c) P(00 or red)= ___ (Type an integer or decimal rounded to four decimal places as needed. )
(a). There is a 5.26% chance that the metal ball falls into a green slot.
(b). There is a 52.63% chance that the metal ball falls into either a green or a red slot on any given spin of the roulette wheel.
(c). P(00 or red) ≈ 0.5263
(d). This event is called impossible.
(a) P(green) = 2/38 = 1/19 ≈ 0.0526.
This means that there is a 5.26% chance that the metal ball falls into a green slot on any given spin of the roulette wheel.
If the wheel is spun 100 times, one would expect about 5 spins to end with the ball in a green slot. (Expected value = 100 x P(green) = 100/19 ≈ 5.26, which we round to the nearest integer.)
(b) P(green or red) = P(green) + P(red) = 2/38 + 18/38 = 20/38 ≈ 0.5263. This means that there is a 52.63% chance that the metal ball falls into either a green or a red slot on any given spin of the roulette wheel.
If the wheel is spun 100 times, one would expect about 53 spins to end with the ball in either a green or red slot. (Expected value = 100 * P(green or red) = 2000/38 ≈ 52.63, which we round to the nearest integer.)
(c) P(00 or red) = P(00) + P(red) = 2/38 + 18/38 = 20/38 ≈ 0.5263. This means that there is a 52.63% chance that the metal ball falls into either 00 or a red slot on any given spin of the roulette wheel.
(d) The probability that the metal ball falls into the number 31 and a black slot simultaneously is zero, since 31 is an odd number and all odd numbers are red on the roulette wheel. This event is called impossible.
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in a group of 190 students, 112 students are taking a tech course, 74 are taking an art class, and 62 are taking both courses. if one student is randomly chosen from the group, what is the probability that they are taking tech given that they are taking art? express your answer to the nearest tenth of a percent.
The probability that a randomly chosen student is taking tech given that they are taking art is 50%.
To find the probability that a randomly chosen student is taking tech given that they are taking art, we need to use conditional probability. We can use the formula:
P(Tech | Art) = P(Tech and Art) / P(Art)
We know that 62 students are taking both tech and art, so P(Tech and Art) = 62. To find P(Art), we need to subtract the number of students who are only taking tech or only taking art from the total number of students:
P(Art) = (74 - 62) + (112 - 62) + 62 = 124
Therefore, we have:
P(Tech | Art) = 62 / 124 = 0.5
So the probability that a randomly chosen student is taking tech given that they are taking art is 50%.
In summary, we can use conditional probability to find the probability that a randomly chosen student is taking tech given that they are taking art. We need to find the number of students who are taking both tech and art and the total number of students taking art, and then divide the two numbers to get the probability.
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(q36)Find the area under the curve y = 2^2x - 3 from 0 to 2.
Answer:
D. 1.353
Step-by-step explanation:
You want the area under the curve y = 2^(2x-3) in the interval [0, 2].
IntegralThe area is found by the integral ...
[tex]\displaystyle \int_0^2{2^{2x-3}}\,dx=\dfrac{1}{8}\int_0^2{4^x}\,dx=\dfrac{1}{8\ln{(4)}}(4^2-4^0)=\dfrac{15}{8\ln{(4)}}\approx\boxed{1.353}[/tex]
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find an equation of the tangent plane to the given surface at the specified point. z = y cos(x − y), (7, 7, 7)
The equation of the tangent plane to the surface z = y cos(x − y) at the point (7, 7, 7) is z = 3(x+y) - 35.
To find the equation of the tangent plane to the given surface at the specified point, we need to find the gradient vector of the surface at that point. The gradient vector is a vector that points in the direction of the greatest rate of change of the surface at the given point. The tangent plane to the surface is then defined by the equation z = f(a,b) + fx(a,b)(x-a) + fy(a,b)(y-b), where (a,b) is the point of tangency, f is the function that defines the surface, and fx and fy are the partial derivatives of f with respect to x and y, evaluated at (a,b).
In this case, the partial derivatives of z = y cos(x − y) are fx = -y sin(x-y) - cos(x-y) and fy = cos(x-y) - x sin(x-y). Evaluating these partial derivatives at (7,7), we get fx(7,7) = -2cos(0) - sin(0) = -1 and fy(7,7) = cos(0) - 7sin(0) = 1. Therefore, the gradient vector at (7,7,7) is (-1,1,0).
Using the formula for the equation of the tangent plane, we obtain z = 7 cos(7 - 7) - (1)(x-7) + (1)(y-7), which simplifies to z = 3(x+y) - 35. Therefore, the equation of the tangent plane to the surface z = y cos(x − y) at the point (7, 7, 7) is z = 3(x+y) - 35.
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solve this please.!!!!!!
Answer:
(m-4)(m+4)
Step-by-step explanation:
If you multiply both and open up it becomes [tex]m^2-4m+4m-16[/tex], simplify to [tex]m^2-16[/tex]
evaluate the double integral where is the triangular region with vertices (0 0) (1 2) (0 3)
The double integral over a triangular region with vertices (0,0), (1,2), and (0,3) will be evaluated.
To evaluate the double integral over the given triangular region, we need to set up the integral in terms of the appropriate bounds.
Let's denote the double integral as ∬R f(x, y) dA, where R represents the triangular region.
The vertices of the triangle are given as (0, 0), (1, 2), and (0, 3).
To set up the bounds of integration, we can observe that the triangle is bounded by the lines x = 0, x = 1, and the line joining the points (0, 3) and (1, 2).
For the inner integral, the lower limit of integration (y) is given by the line x = 0, and the upper limit is given by the line joining the points (0, 3) and (1, 2).
Therefore, the bounds for the inner integral are y = 0 to y = 3 - x.
For the outer integral, the lower limit of integration (x) is 0, and the upper limit is 1.
We can now set up the double integral as follows:
∬R f(x, y) dA = ∫[0 to 1] ∫[0 to 3-x] f(x, y) dy dx
Please note that without specifying the function f(x, y) or providing further instructions, we cannot provide a specific numerical evaluation of the integral.
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in a two-sample hypothesis test, d0 is equivalent to the ______ in a one-sample hypothesis test. benchmark p value test statistic level of significance
In a two-sample hypothesis test, d0 is equivalent to the benchmark in a one-sample hypothesis test. The benchmark in a one-sample test is the hypothesized value for the population mean, which is being compared to the sample mean.
In a two-sample test, d0 represents the difference between the two population means that is being tested. The p value, test statistic, and level of significance are all important factors in both types of hypothesis tests, but they do not directly relate to d0 or the benchmark. The p value is the probability of observing a test statistic as extreme as the one calculated, given the null hypothesis is true. The test statistic is a numerical value used to determine whether to reject or fail to reject the null hypothesis. The level of significance is the threshold for deciding whether to reject the null hypothesis, typically set at 0.05.
In a two-sample hypothesis test, d0 is equivalent to the benchmark in a one-sample hypothesis test. In both tests, we compare the observed data with a reference value. In a one-sample test, the reference value is the benchmark, while in a two-sample test, d0 represents the hypothesized difference between the two population means or proportions. The p-value, test statistic, and level of significance are used in both types of tests to make inferences and draw conclusions about the populations being studied.
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If s'(t) = v(t), then s(t) is the position of the runner at time t. Let s(0) = -3, determine the following values. s(4) = ? s(7) = ? s(5) = ? s(9) = ? I got these values for my integration: (which are all correct) INT(0,4) = 20 INT(4,7) = 0 INT(7,10) = -10 INT(0,10) = 10
Required value of s(4), s(7), s(5), s(9) are V(4) + C, V(7) + C, V(5) + C, V(9) + C respectively where c is the constant.
To determine the values of s(t) at different time points, we need to integrate the velocity function v(t) with respect to time. Based on the values you provided, it seems like you have already performed the integration correctly. However, since the values you provided are the definite integrals, we need to find the antiderivative or the indefinite integral of the velocity function to determine s(t) explicitly.
Let's assume the indefinite integral of v(t) is V(t). Then, we have:
s(t) = V(t) + C
where C is the constant of integration. To determine the constant C, we can use the initial condition s(0) = -3. Substituting t = 0 into the equation, we get:
s(0) = V(0) + C
-3 = V(0) + C
Since the constant of integration is the only unknown term, we can solve for C:
C = -3 - V(0)
Now, we can find the position function s(t) for different values of t using the indefinite integral and the constant C:
s(4) = V(4) + C
s(7) = V(7) + C
s(5) = V(5) + C
s(9) = V(9) + C
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A survey by Men's Health magazine stated that 15% of all men said that they used exercise to relieve stress. A random sample of 100 men was selected, and 12 said that they used exercise to relieve stress. Use the P-value method to test the claim. Use α =0.10. There is not enough information to draw a conclusion. No. There is enough evidence to reject the claim that the percentage of men who use exercise to relieve stress is 15%. Yes. There is not enough evidence to reject the claim that the percentage of men who use exercise to relieve stress is 15%.
Yes. There is not enough evidence to reject the claim that the percentage of men who use exercise to relieve stress is 15%.
To test the claim, we need to use a hypothesis test with the null hypothesis being that the percentage of men who use exercise to relieve stress is 15% and the alternative hypothesis being that it is not 15%. Using the given information, we can calculate the sample proportion to be 0.12. Then, using a normal approximation to the binomial distribution with a standard error of sqrt(0.15*0.85/100) = 0.0387, we can calculate the test statistic to be (0.12 - 0.15)/0.0387 = -0.773.
Using a significance level of 0.10, the critical value for a two-tailed test is ±1.645. Since the test statistic is not less than -1.645 or greater than 1.645, we fail to reject the null hypothesis and conclude that there is not enough evidence to reject the claim that the percentage of men who use exercise to relieve stress is 15%.
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suppose that we know that l 1 ∪ l 2 and l 1 are regular. can we conclude from this that l 2 is regular? make sure to prove your answer
No, we cannot conclude that l2 is regular from the fact that l1 ∪ l2 and l1 are regular.
Does the regularity of l1 ∪ l2 and l1 imply the regularity of l2?The regularity of a language means that there exists a finite automaton that recognizes that language. The union of two languages l1 and l2 is the set of all strings that are in either l1 or l2 or both.
Suppose that l1 ∪ l2 and l1 are regular. Then there exist finite automata A1 and A2 that recognize l1 ∪ l2 and l1, respectively. However, this does not imply that there exists a finite automaton that recognizes l2.
To see why, consider the example where l1 = {a^n b^n | n >= 0} and l2 = {a^n b^n c^n | n >= 0}. Both l1 and l1 ∪ l2 are regular languages, but l2 is not regular. This can be proven using the pumping lemma for regular languages.
Therefore, the regularity of l1 ∪ l2 and l1 does not necessarily imply the regularity of l2.
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10. Select all the correct statements
about the points A, B, and C.
A
ty
2
-4-20
2
4
B
C
4
X
A The distance between points A
and B is 4 units.
B Point A is farther away from point
B than point Cis.
Point A and point Care the same
distance from point B.
The distance between points A
and B is 5 units.
EPoint A is the same distance from
the y-axis as point Cis.
The correct statements are:
B. Point A is farther away from point B than point C is.
D. The distance between points A and B is 5 units.
Let's analyze the given statements about points A(-3,3), B(2,3), and C(2,-1):
A. The distance between points A and B is 4 units.
This statement is incorrect. The distance between points A and B can be calculated using the distance formula: [tex]\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}[/tex].
Distance AB = [tex]\sqrt{(2 - (-3))^2 + (3 - 3)^2} = \sqrt{5^2 + 0^2} = \sqrt{25}[/tex] = 5 units. Therefore, the distance between points A and B is 5 units, not 4 units.
B. Point A is farther away from point B than point C is.
This statement is correct. By comparing the distances between A and B and A and C, we see that the distance between A and B is 5 units, while the distance between A and C is [tex]\sqrt{(-3 - 2)^2 + (3 - (-1))^2} = \sqrt{25 + 16} = \sqrt{41}[/tex], which is greater than 5 units. Thus, point A is farther away from point B than point C is.
C. Point A and point C are the same distance from point B.
This statement is incorrect. As calculated earlier, the distance between A and B is 5 units, while the distance between C and B is [tex]\sqrt{(2 - 2)^2 + (-1 - 3)^2} = \sqrt{0^2 + 16}= \sqrt{16}[/tex] = 4 units. Hence, point A and point C are not the same distance from point B.
D. The distance between points A and B is 5 units.
This statement is correct, as determined in statement A.
E. Point A is the same distance from the y-axis as point C is.
This statement is incorrect. The distance between A and the y-axis can be calculated as the absolute value of the x-coordinate of point A: |x-coordinate of A| = |-3| = 3 units. On the other hand, the distance between C and the y-axis is the absolute value of the x-coordinate of point C: |x-coordinate of C| = |2| = 2 units. Hence, point A is not the same distance from the y-axis as point C.
Therefore, the correct statements are:
B. Point A is farther away from point B than point C is.
D. The distance between points A and B is 5 units.
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find the principal unit normal vector to the curve at the specified value of the parameter. r(t) = ti 6 t j, t = 2
The principal unit normal vector to the curve at t = 2 does not exist. This could happen if the curve has a sharp turn or a point of inflection at t = 2.
The principal unit normal vector to a curve is given by the formula: N(t) = T'(t)/||T'(t)||
where T(t) is the unit tangent vector to the curve. To find T(t), we need to take the first derivative of the given vector function:
r(t) = ti + 6tj
r'(t) = i + 6j
||r'(t)|| = sqrt(1^2 + 6^2) = sqrt(37)
T(t) = r'(t)/||r'(t)|| = (1/sqrt(37))i + (6/sqrt(37))j
To find N(t), we need to take the derivative of T(t) and normalize it:
T'(t) = 0i + 0j = 0
N(t) = T'(t)/||T'(t)|| = 0/0, which is undefined.
Therefore, the principal unit normal vector to the curve at t = 2 does not exist. This could happen if the curve has a sharp turn or a point of inflection at t = 2.
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what additional data should be gathered to learn more about managerial turnover?
To learn more about managerial turnover, additional data should be gathered, including employee demographics, job satisfaction surveys, performance metrics, and exit interview data.
To gain deeper insights into managerial turnover, several additional data points should be collected. Firstly, employee demographics such as age, gender, educational background, and tenure can provide valuable information about turnover patterns and potential disparities. Analyzing turnover rates among different demographic groups can help identify any systemic issues or biases that may contribute to turnover.
Secondly, conducting regular job satisfaction surveys can help gauge employees' perceptions of their roles, work environment, and job-related factors. This data can shed light on the factors that influence managerial turnover, such as job dissatisfaction, lack of growth opportunities, inadequate compensation, or poor work-life balance.
Thirdly, tracking the performance metrics of managers can provide insights into the relationship between performance and turnover. Assessing metrics like performance evaluations, sales figures, customer satisfaction ratings, and team productivity can help determine whether managerial performance plays a role in turnover rates.
Lastly, analyzing data from exit interviews can be invaluable. Exit interviews allow departing managers to provide feedback on their reasons for leaving, including factors like organizational culture, leadership effectiveness, communication issues, or lack of support. This qualitative data can offer valuable insights into the specific reasons behind managerial turnover and help identify areas for improvement within the organization.
By gathering these additional data points, organizations can gain a more comprehensive understanding of managerial turnover and develop targeted strategies to address the underlying causes, improve retention, and create a more supportive and engaging work environment.
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Select all expressions that have a value greater than √3.15.
pi/3
5 - sqrt(3)
1 1/2 - sqrt(2)
6.2 - sqrt(2/2)
After considering all the given options we conclude that all the options have a greater value than √3.15 except for π/3, then the greatest value from the lot is Option D, which is 6.2 - √(2/2)
In order to evaluate the greatest expression from the lot that has a higher value than √3.15, we have to apply simplification for every option.
Therefore,
π /3) = 1.04
5 - √(3) = 2.2679
1 1/2 - √(2) = 0.0857
6.2 - √(2/2) = 5.2
Therefore, the expression that is greater than rest of the option and higher in value in comparison to √3.15 is 6.2 - √(2/2)
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researchers analyzed data from more than 5000 adults and found that the more diet sodas a person drank, the greater the person's weight gain. does this mean that drinking diet soda causes weight gain? choose a more plausible explanation for this association. actually, due to the very large sample size, this is good evidence to conclude that diet soda causes weight gain. the association in the sample must be due to random chance, since in the general population, diet products are associated with weight loss, not weight gain. people who gain more weight may be more likely to go on a diet and so choose to drink diet soda. younger adults are more likely to drink soda and are also more likely to be putting on large amounts of muscle mass through natural growth and/or exercise.
The more plausible explanation for the association between diet soda consumption and weight gain is that people who drink diet soda may have other factors or behaviors that contribute to weight gain.
For example, individuals who drink more diet soda may have a higher intake of calorie-dense foods or may engage in less physical activity.
Additionally, people who are already overweight or at risk of gaining weight.
May be more likely to choose diet soda as a way to manage their weight.
While the large sample size may provide strong statistical evidence of the association between diet soda consumption and weight gain.
It does not necessarily prove a causal relationship.
Further research is needed to establish a cause-and-effect relationship between diet soda consumption and weight gain.
Such as randomized controlled trials or longitudinal studies.
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what are the elements in the vector x when x = [6 4 15; 2 1 3]; x(4, 4) = 7;
There is no element in position (4,4) since matrix x has only two rows and three columns.
This vector is a 2x3 matrix, which means it has two rows and three columns: [6 4 15] [2 1 3] Now, address the additional information: x(4, 4) = 7. Unfortunately, this information is not relevant because the given matrix is a 2x3 matrix, and there is no element at the (4, 4) position.
Hence, The vector x does not exist since it has more than one row.
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If P(A) = 0.2, P(B) = 0.3, and P (AUB) = 0.44; then the events A and B are: A) Mutually exclusive events B) Independent events C) Dependent events D) More information is needed
The events A and B are dependent events. Option C is answer.
The probability of the union of events A and B, denoted as P(AUB), is calculated as the sum of their probabilities minus the probability of their intersection, denoted as P(AB). So, using the given information, we can find:
P(AB) = P(A) + P(B) - P(AUB)
= 0.2 + 0.3 - 0.44
= 0.06
If A and B were independent events, then we would have P(AB) = P(A)P(B), which is not the case here since P(AB) ≠ P(A)P(B). Thus, A and B are dependent events.
Option C is answer.
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What are the constraints on the x- and y-values?
Answer: x and y are constrained by g(x,y)=c
Step-by-step explanation:
Is this a parallelogram? why?
Yes, the diagram above is a parallelogram
What is a parallelogram?A parallelogram is a quadrilateral with opposite sides parallel this means that the opposite angles will be equal.
A quadrilateral with equal sides is called a rhombus, and a parallelogram whose angles are all right angles is called a rectangle.
The diagonals of parallelogram bisect each other but they are not equal, this is because the angles are not equal
Since the diagram has unequal sides , it is not a rhombus and the angles are not 90°, it is not a rectangle.
Therefore the diagram is a parallelogram.
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Identify the key characteristics of powerful oratory.
HELP
the key characteristics of powerful oratory are the key characteristics of powerful oratory, Conviction and Passion and Persuasiveness
What are the key characteristics of powerful orator?1. Clarity and Structure: Powerful oratory involves clear and organized thoughts. The speaker communicates their ideas in a well-structured manner, using logical progression and cohesive transitions between different points.
2. Conviction and Passion: A powerful speaker demonstrates a genuine belief in their message and delivers it with passion. They express confidence and enthusiasm, which helps to capture the audience's attention and inspire them.
3. Persuasiveness: Powerful oratory aims to persuade and influence the audience. The speaker uses persuasive techniques
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we conduct an anova where the critical value is 4.84 and the f we obtain is -5.96. what decision would we make based on this study? group of answer choices we made an error in calculating f. we should not reject the null. we should reject the null. cannot determine the answer from the information given.
We perform an ANOVA, and the result is an f of -5.96 with a critical value of 4.84. Based on the information given, the decision we would make is we should not reject the null hypothesis. Here option B is the correct answer.
In order to make a decision based on an ANOVA, we need to compare the calculated F-value to the critical F-value. The critical F-value is determined based on the degrees of freedom and the desired level of significance for the test. If the calculated F-value is greater than the critical F-value, we reject the null hypothesis. If the calculated F-value is less than or equal to the critical F-value, we fail to reject the null hypothesis.
In this case, the critical value is 4.84 and the calculated F-value is -5.96. It is important to note that F-values are always positive, so a negative F-value indicates an error in calculation. Therefore, option A can be eliminated.
Since the calculated F-value is negative and lower than the critical value, we fail to reject the null hypothesis. This means that there is not enough evidence to support the alternative hypothesis and we conclude that there is no significant difference between the groups being compared.
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Complete question:
We conduct an anova where the critical value is 4.84 and the f we obtain is -5.96. what decision would we make based on this study? group of answer choices
A - we made an error in calculating f.
B - we should not reject the null.
C - we should reject the null.
D - cannot determine the answer from the information given.
Havent been able to find the answers on this
We are given that this triangle is a right triangle, one angle measurement, and one side length. Therefore, to figure out the other side length, we can use a trigonometric function to figure out side x. If we orient the triangle to angle T, then the hypotenuse is the side length measuring 1.8 units and side length x is the opposite (because it is opposite from angle T). This insinuates we use a sine to figure out side length x because sine finds the ratio between the opposite and the hypotenuse:
sin(50 deg) = x/1.8
1.8*sin(50 deg) = x
x is about 1.3788
Answer:
1.379 or 1.4 (to 1dp)
Step-by-step explanation:
For this question we obviously need to use trigonometry. We will use the equation O = S x H, where O is the opposite side, S is sin and H is the hypotenuse.
The equation will be sin(50) x 1.8 This approximately equals 1.379, or 1.4 to 1dp7. Parallelogram JKLM with vertices J(3,-2),
K(7, 0), L(6, -5), and M(2, -7): 180°
J'(
K(
LC
MC
1777
8.
The set of points that could represent the dilation is J' (15, 35), K' (70, 35), L' (50, 5), M' (-5, 5)
The coordinates are given as:
J (3, 7), K (14, 7), L (10, 1), and M (-1, 1).
When dilated across the origin, the points become
(x,y) => k(x,y)
Where k represents the scale factor
Assume that k = 5.
So, we have:
J (3, 7), K (14, 7), L (10, 1), and M (-1, 1).
J' (15, 35), K' (70, 35), L' (50, 5), M' (-5, 5)
Hence, the set of points that could represent the dilation is J' (15, 35), K' (70, 35), L' (50, 5), M' (-5, 5)
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Parallelogram JKLM has the coordinates J (3, 7), K (14, 7), L (10, 1), and M (-1, 1). Which of the following sets of points represents a dilation from the origin of parallelogram JKLM?
A.
J' (8, 12), K' (19, 12), L' (15, 6), M' (4, 6)
B.
J' (3, 35), K' (70, 7), L' (50, 1), M' (-1, 5)
C.
J' (15, 7), K' (70, 7), L' (50, 1), M' (-5, 1)
D.
J' (15, 35), K' (70, 35), L' (50, 5), M' (-5, 5)
At the beginning of unit 10, information was introduced about the significance of e. which of the following statements is not true regarding ?
a. The number e is equal to about 2.718
b. The number e is called the "natural" exponential because it arises naturally in math and science
c. The number e is considered a special irrational number in mathematics
d. The number e is another way to express the number π
Answer:
d. The number e is another way to express the number π
Step-by-step explanation:
You want to know the false statement among those offered.
a. 2.718The first few digits of the irrational number e are 2.718281828459045...
(true)
b. NaturalLeonard Euler identified e as the value of 1 compounded continuously at an annual rate of 100%. More than 100 years earlier, John Napier computed and published tables of the logarithms of trig functions. The base was related to e, but he didn't call it that (or even know its value).
(true)
c. SpecialThe value e is sufficiently "special" that most scientific calculators have a button for it. It shows up in many formulas, especially those related to growth, decay, and logarithms.
(true)
d. PiSome expressions involving both e and π can make it look like there might be a relation.
In complex numbers, Euler's identity e^(iπ)+1 = 0 involves both irrational numbers. However, there is no known algebraic relationship between π and e.
(false)
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Find the percent of change from 41 songs to 99 songs. Round to the nearest tenth of a percent if necessary
The percentage change of songs is given by the equation A = 141.5 %
Given data ,
The percent of change from 41 songs to 99 songs is A
where ,
Percentage change =( (| Measured Value - True Value |) / True Value ) x 100
A = ( 99 - 41 ) / 41 x 100
A = ( 58/41 ) x 100
A = 141.5 %
Hence , the percentage change is 141.5 %
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Find the diameter of a sphere with a surface area of 900 square meters.
The diameter of the sphere with a surface area of 900 square meters is 16.93 meters.
The surface area of a sphere:
A = 4πr²
where,
A = surface area
r = radius of the sphere
In this case, we have the surface area A = 900 square meters.
A = 4πr²
900 = 4πr²
Dividing both sides by 4π:
225 = πr²
Now, we can solve for the radius:
r² = 225/π
Taking the square root of both sides:
r = √(225/π)
Therefore, the diameter D is:
D = 2r = 2√(225/π)
Calculating the value of the diameter:
D ≈ 2√(225/π) ≈ 2√(225/3.1416) ≈ 2√(71.618) ≈ 2 * 8.465 ≈ 16.93 meters
Therefore, the diameter of the sphere with a surface area of 900 square meters is approximately 16.93 meters.
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hey anyone there?. *MUST ANSWER ASAP*
OAB is a minor sector of the circle below.
The area of the circle is 54 m².
2
Calculate the area of OAB.
Give your answer in m² and give any
decimal answers to 1 d.p.
B
A
60°
O
in the given diagram, the area of minor sector OAB is 9 m²
Calculating the area of sectorFrom the question, we are to calculate the area of the minor sector of the circle shown in the diagram.
The area of a sector is given by the formula
A = θ/360° × πr²
Where A is the area of the sector
θ is the angle subtended at the center of the circle
and r is the radius of the circle
NOTE: The area of a circle is given by the formula,
Area of a circle = πr²
Thus,
Area of a sector = θ/360° × Area of the circle
From the given information,
Area of the circle = 54 m²
and θ = 60°
Thus,
Area of the sector = 60°/360° × 54
Area of the sector = 1/6 × 54
Area of the sector = 9 m²
Hence, the area of the minor sector is 9 m²
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Instead of the usual dice, suppose we have a bag of 12-sided dice, each with sides numbered 1 through 12. Assume the dice are fair. if we dump out a bag of 50 such dice and add up the numbers they land on, what is the probability the total will be at least 360? Estimate the probability using a normal approximation with a continuity correction. Select the nearest percentage.a. 43%b. 74%c. 3%d. 59%e. 85%e. 16%f. 28%g. 8%
The estimated probability of the total sum being at least 360 is approximately 8%.
To estimate the probability using a normal approximation with a continuity correction, we first need to find the mean and standard deviation of the sum of the numbers on the 50 dice.
For a single 12-sided die, the mean is (1+2+...+12)/12 = 6.5. For 50 dice, the mean is 50 × 6.5 = 325. The variance for one die is [(1-6.5)²+(2-6.5)²+...+(12-6.5)²]/12 = 11.92. For 50 dice, the variance is 50 × 11.92 = 596, and the standard deviation is √596 ≈ 24.4.
Now, we'll use the normal approximation with a continuity correction to estimate the probability that the sum of the numbers is at least 360. First, find the z-score:
z = (X - μ + 0.5) / σ = (360 - 325 + 0.5) / 24.4 ≈ 1.42
Using a z-table or calculator, the probability of obtaining a z-score greater than 1.42 is approximately 0.0778 or 7.78%. The closest percentage in the options provided is 8%, which corresponds to option g. Therefore, the estimated probability of the total sum being at least 360 is approximately 8%.
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