70
А
In the diagram, point is the center of the circle. If
mZABC = 70°, what is m ZAOC?
OA. 100°
OB.
110°
Ос.
140°
OD
130°

i need help quick plssss

Sam's rate = 10.32 miles per hour

distance = 63756ft

time = 70 minutes

if 5280 feet = 1 mile

let the number of mile of 63756ft = y

5280 feet = 1 mile

63756 feet = y

cross multiply:

y (5280) = 1(63756)

5280y = 63756

y = 63756/5280

y = 12.075 miles

time in minutes = 70 minutes

let the time in hour = x

60 minutes = 1 hour

70 minutes = x

cross multiply:

x(60) = 1(70)

60x = 70

x = 70/60

x = 1.17 hour

Rate = distance/time

Rate in miles per hour = 12.075 miles/1.17 hour

Rate = 10.32 miles per hour

Answer: 63756 ft / 70 min

Step-by-step explanation:) I did the math

Answer:

C

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

The question says liner function of time. So it’s not just one point it’s a line. all the others if graphed would be a single point while C would make a line because it says  every year it increases by 10000.

Answer:

$220.50

Step-by-step explanation:

245.00×10%=24.50

245.00-24.50=220.50

Answer:

$24.50

Step-by-step explanation:

Answer:

An economic signal is described as any piece of data or information which allows people to optimize their decision-making process and make comparatively better decisions economically.

Step-by-step explanation:

hope it helps

mark me brainliest pls

Pregnancy is a physiological state where a woman carries a developing embryo or fetus within her uterus. It is an important stage in a woman's life that comes with various physical, emotional, and psychological changes. One of the earliest indicators of pregnancy is a missed menstrual period. However, there are other signs and symptoms that can confirm the presence of pregnancy. The correct answer is C) palpable fetal movement.

In the given options, all of the choices are potential signs of pregnancy, but only one of them can confirm the pregnancy. The correct answer is C) palpable fetal movement. This is because fetal movements are usually first felt by the mother between 16-25 weeks of pregnancy, indicating the presence of a growing fetus. This is a definitive sign of pregnancy that is not present in any other condition.

A missed menstrual period (option A) can be a strong indication of pregnancy, especially if the woman has regular menstrual cycles. However, it is not definitive as menstrual irregularities can be caused by various factors, such as stress or hormonal imbalances.

Abdominal enlargement (option B) can also be a sign of pregnancy, but it is not definitive as it can be caused by other factors, such as weight gain or bloating.

Morning sickness (option D) is a common symptom of pregnancy, but it is not definitive as it can also be caused by other factors, such as gastrointestinal disorders or food poisoning.

It is important to note that there are various other signs and symptoms of pregnancy, such as breast tenderness, fatigue, frequent urination, and food cravings or aversions. However, none of these symptoms are definitive on their own, and a confirmatory diagnosis of pregnancy can only be made through medical tests such as a urine or blood pregnancy test, or an ultrasound.

Overall, while the signs and symptoms of pregnancy can vary from woman to woman, it is important to seek medical advice and guidance if you suspect you are pregnant or have any concerns about your reproductive health.

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The statement the most frequently used graphic in reports is the table is false because tables are not typically the most frequently used graphic in reports.

While tables are commonly used in reports to present structured and detailed information, they are not typically the most frequently used graphic. Instead, other types of visuals such as charts, graphs, and diagrams are often employed to present data and communicate information more effectively.

Graphical representations like bar charts, line charts, pie charts, and scatter plots are widely used in reports to visualize patterns, trends, comparisons, and relationships in the data. These visualizations offer a concise and visually appealing way to convey information, making it easier for readers to understand complex data.

Tables, on the other hand, are more suitable for presenting precise numerical values, categorical information, or detailed breakdowns. They are useful for displaying large datasets or providing specific values for reference. However, their format can be dense and may require closer scrutiny, making them less visually impactful compared to graphical representations.

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Based on the very strong negative correlation (r = -0.37) observed between variables x and y, we can conclude that y is strongly associated with x. However, there may be a need for a second independent variable to fully explain the observed changes in y.

The correlation coefficient (r) measures the strength and direction of the linear relationship between two variables. In this case, the correlation coefficient is -0.37, indicating a strong negative correlation between variables x and y.

Option a, "y is strongly associated with x and there may be no need for a second independent variable," is not the correct conclusion because a strong correlation does not necessarily imply that no other independent variable is needed. It only suggests a strong relationship between x and y.

Option b, "Regardless of the range of data, further changes in x will lead to no changes in y," is not accurate since a strong correlation indicates that changes in x will likely result in changes in y.

Option c, "x has caused y," is not an appropriate conclusion because correlation does not imply causation. It suggests a relationship between x and y but does not establish a cause-and-effect relationship.

Option d, "Y is not associated with X. There may be another variable required to define the observed changes in y," is also incorrect because the observed strong correlation indicates an association between x and y. However, it acknowledges the possibility of another variable contributing to the observed changes in y.

Therefore, the correct conclusion is that y is strongly associated with x, but there may be a need for a second independent variable to fully explain the observed changes in y.

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The compound will reach 90°C approximately 112.5 minutes after 9:00 a.m., considering the constant rate of temperature increase per minute.

To determine the time when the compound will reach 90°C, we need to find the rate of temperature increase per minute and calculate the number of minutes required to reach 90°C.

From the given information, we know that the compound's temperature increases by the same number of degrees every minute. The temperature change from 10°C to 22°C took 15 minutes (from 9:00 a.m. to 9:15 a.m.).

To find the rate of temperature increase per minute, we divide the temperature change by the number of minutes:

Rate of temperature increase = (Final temperature - Initial temperature) / Time

Rate of temperature increase = (22°C - 10°C) / 15 minutes = 12°C / 15 minutes

Next, we need to determine how many minutes are required for the compound to reach 90°C. We can set up a proportion to solve for the unknown time:

12°C / 15 minutes = 90°C / x minutes

Solving the proportion, we find:

12°C * x minutes = 15 minutes * 90°C

x = (15 minutes * 90°C) / 12°C

x = 112.5 minutes

Therefore, the compound will reach 90°C approximately 112.5 minutes after 9:00 a.m.

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The expression equivalent to \(\sqrt[6]{g^5}\ is\ g^\frac{5}{6}\)

An equation is an expression that is used to show how numbers and variables are related using mathematical operators

The laws of indices are used in the simplification of mathematical operations. For example:

\(x^\frac{n}{m} =\sqrt[m]{x^n} \\\\Hence:\\\\\sqrt[6]{g^5}= g^\frac{5}{6}\)

The expression equivalent to \(\sqrt[6]{g^5}\ is\ g^\frac{5}{6}\)

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95% confident that the true average proportional limit stress of all such joints is at least 8.19 mpa.

What is proportional limit?

The maximum stress at which stress and strain are directly proportional and the stress-strain graph is a straight line with a gradient equal to the elastic modulus of the material is known as the proportional limit.

To calculate the 95% lower confidence bound for the true average proportional limit stress of all such joints, we can use the following formula:

lower confidence bound = sample mean - (t-value * standard error)

The standard error of the mean is a measure of the variability of the sample mean, and is calculated as:

              \(standard\ error = sample\ standard\ deviation / \sqrt{(sample \ size)}\\\\= 0.78 / \sqrt{(20)}\\\\= 0.19\)

To find the t-value, we can consult a t-distribution table or use a t-distribution calculator. At a 95% confidence level with a sample size of 20, the t-value is approximately 1.725.

Substituting these values into the formula for the lower confidence bound, we get:

lower confidence bound = 8.52 - (1.725 * 0.19)

= 8.52 - 0.327

= 8.19

So the 95% lower confidence bound for the true average proportional limit stress of all such joints is approximately 8.19 mpa.

Hence,  95% confident that the true average proportional limit stress of all such joints is at least 8.19 mpa.

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Answer:

2

Step-by-step explanation:

Answer:

115

Step-by-step explanation:

The angle of a straight line is 180°. so all you have to do is subtract 65 from 180 and get 115.

Answer:

<7=115 degrees

Step-by-step explanation:

Since <8 = 65 degrees, and <7 and <8 are straight angles, then 180-65 = 115

Answer:

12.7

Step-by-step explanation:

there are 4 sides to a square just divide 50.8 by 4 and you get 12.7 assuming all the sides are the same length

The given initial value problem is a second-order linear homogeneous ordinary differential equation with an input in the form of a delta function.

The general solution to the homogeneous equation y'' + 16π^2y = 0 is given by y(t) = A sin(4πt) + B cos(4πt), where A and B are constants to be determined.

To solve the complete initial value problem, we need to consider the effect of the input term, which is a delta function δ(t-1) with amplitude 4π. The delta function represents an instantaneous impulse at t = 1.

To find the particular solution for the given input, we can use the method of variation of parameters. Let's denote the particular solution as yp(t) = u(t) sin(4πt) + v(t) cos(4πt).

We need to find the derivatives of yp(t):

yp'(t) = u'(t) sin(4πt) + u(t) (4π cos(4πt)) + v'(t) cos(4πt) - v(t) (4π sin(4πt))

yp''(t) = u''(t) sin(4πt) + u'(t) (4π cos(4πt)) + u'(t) (4π cos(4πt)) - u(t) (16π^2 sin(4πt)) + v''(t) cos(4πt) - v'(t) (4π sin(4πt)) - v'(t) (4π sin(4πt)) - v(t) (16π^2 cos(4πt))

Substituting these derivatives back into the differential equation:

u''(t) sin(4πt) + u'(t) (4π cos(4πt)) + u'(t) (4π cos(4πt)) - u(t) (16π^2 sin(4πt)) + v''(t) cos(4πt) - v'(t) (4π sin(4πt)) - v'(t) (4π sin(4πt)) - v(t) (16π^2 cos(4πt)) + 16π^2 (u(t) sin(4πt) + v(t) cos(4πt)) = 4π δ(t-1)

To satisfy the delta function, we have:

u(t) sin(4πt) + v(t) cos(4πt) = 0 for t ≠ 1

Since the left side of the equation is zero for t ≠ 1, the terms involving sin(4πt) and cos(4πt) must be zero independently. Therefore, we have the following equations:

u(t) = 0 for t ≠ 1

v(t) = 0 for t ≠ 1

Next, we need to consider the effect of the delta function at t = 1. The equation becomes:

u''(1) sin(4π) - u(1) (16π^2 sin(4π)) + v''(1) cos(4π) - v(1) (16π^2 cos(4π)) = 4π

The derivatives u''(1) and v''(1) are unknown at this point, so we introduce two parameters to represent them:

u''(1) = A

v''(1) = B

Now, let's integrate the equations for u(t) and v(t) to find their values:

u(t) = 0 for t ≠ 1

v(t

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Answer:

La probabilidad que hay de que sea fin de semana es \(\frac{2}{7}\)

Step-by-step explanation:

La Probabilidad es la mayor o menor posibilidad de que ocurra un determinado suceso. En otras palabras, la probabilidad establece una relación entre el número de sucesos favorables y el número total de sucesos posibles. Entonces, la probabilidad de un suceso cualquiera A se define como el cociente entre el número de casos favorables (número de casos en los que puede ocurrir o no el suceso A) y el número total de casos posibles. Esta se denomina Ley de Laplace.

\(P(A)=\frac{numero de casos favorables}{numero de casos posibles}\)

En este caso:

Reemplazando:

P(A)= \(\frac{2}{7}\)

La probabilidad que hay de que sea fin de semana es \(\frac{2}{7}\)

Using the given ratio, we can set up a proportion to find the number of ounces of water needed if 7 teaspoons of tea are used. Let x be the number of ounces of water needed:

1 teaspoon / 6 ounces = 7 teaspoons / x + 1 teaspoon

Multiplying both sides by the denominator on the right side gives:

x + 1 = 7 teaspoons * 6 ounces / 1 teaspoon

Simplifying the right side gives:

x + 1 = 42 ounces

Subtracting 1 from both sides gives:

x = 41 ounces

Therefore, 41 ounces of water are needed if 7 teaspoons of tea are used.

In summary, to find the number of ounces of water needed if 7 teaspoons of tea are used, we can use the inverse of the given ratio and set up a proportion to solve for x. The resulting proportion shows that 41 ounces of water are needed to make the tea.

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There are 6 pairs of strings that have at least 6 beads.We have to evaluate 35*17 - 15*7

Given expression: 35*17-15*7= 595-105= 490Thus, the required value is 490.There are 16 pairs of two strings of beads that can be formed if you want each string to have at least 6 beads. We have 18 beads, so when the necklace is divided into two, the minimum number of beads on each string is six.To count the number of ways we can do this, we should first count the total number of ways the necklace can be split into two parts. We know that the order in which the strings are arranged does not matter, so we can divide by 2 to account for this.We can divide the necklace at any point, resulting in 18 possible locations.

This gives us a total of 18/2=9 ways to split the necklace.Next, we'll figure out how many of these possibilities result in at least one string with fewer than 6 beads. This can only happen if we cut the necklace at one of the three positions closest to either end (positions 1, 2, or 3, or positions 16, 17, or 18). The other six cuts (positions 4 through 9) result in each string having at least 6 beads.Instead of counting the number of ways we can get at least one short string, we'll count the number of ways we can avoid getting one. This means we'll count the number of ways both strings can have 6 or more beads. There are 6 possible positions for each string, for a total of 6x6=36 ways to pick two strings with at least 6 beads. Out of the total 9 possible cuts, 3 of them result in at least one string with fewer than 6 beads. So, the number of possible pairs of strings with at least 6 beads is:9 - 3 = 6Therefore, there are 6 pairs of strings that have at least 6 beads.

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A student's probability of having a sister are 1/2 or 0.5 if they do not have a brother.

Using the above data table, we must determine the likelihood that a student without a brother also has a sister. Analysing the table now

has a sibling: 5

possesses no sisters: 2

has an 18-year-old brother

possesses no brothers: 4

We are looking for the likelihood that a student has a sister and neither a brother (as indicated by the statement "Does not have a brother"). In this instance, there are two children who do not have a brother but do have a sister, making that number the number of positive outcomes.

No matter whether a student has a sister or not, the total number of outcomes is equal to the number of students who do not have a brother. According to the table, there are 4 students without brothers.

As a result, the likelihood that a student who doesn't have a brother will have a sister can be determined as follows:

Probability is calculated as the ratio of the number of favourable outcomes to all possible outcomes.

Probability equals 2/4

Probability equals 0.5 or half.

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Answer:6,760,000

Step-by-step explanation:

Answer:

390 minutes

Step-by-step explanation:

162 / 3 = 54

351 / 54 = 6.5

6.5 x 60 = 390 minutes

To find the confidence interval statistical analysis such as hypothesis testing or regression analysis is used. However, it is impossible to calculate without data.

To estimate the difference in traffic between a rural and urban location with a 95% confidence level, you would need specific data or information about the traffic counts or relevant measurements from both locations. The confidence interval estimate can be obtained using statistical analysis techniques such as hypothesis testing or regression analysis.

Typically, the process involves collecting data on traffic counts or related variables from both the rural and urban locations. Then statistical methods are applied to calculate the confidence interval estimate based on the sample data. The specific formula or method used would depend on the nature of the data and the analysis approach chosen.

Without specific data or information about the traffic counts or measurements, it is not possible to provide a numerical estimate for the 95% confidence interval of the difference in traffic between a rural and urban location.

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The total number of seeds that Josiah would plant would be = nR×S

To determine the total number of seeds that Josiah will plant will be to add the seeds in the total number of rooms he planted.

Let each row be represented as = nR

Where n represents the number of rows planted by him.

Let the seed be represented as = S

The total number of seeds he planted = nR×S

Therefore, the total number of seeds that was planted Josiah would be = nR×S.

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Answer: \(5x^{2} +6x\)\(-4\)

Step-by-step explanation:

Synthetic division

Answer:

OZ = 23

Step-by-step explanation:

Millimeters can be converted into centimeters by dividing the value by 10. The solution has been obtained by using the unit conversion.

What is unit conversion?

A unit conversion is used to express the same property in a different unit of measurement. For instance, you could use minutes instead of hours to represent time or feet instead of miles to indicate distance. It commonly occurs when measurements are provided in one system of units, such as feet, but are required in a different system, such as chains.

We are required to convert millimeters to centimeters.

We know that 1 centimeter = 10 millimeters

So, for converting millimeters to centimeters, we need to divide the value by 10.

Hence, millimeters can be converted into centimeters by dividing the value by 10.

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The  solution of the given system of equations is (8, -1). of the given system of equations is (8, -1).

One method to solve the given system of equations is substitution:

- Solve one of the equations for one of the variables (e.g., x = 9 + y from the second equation).

- Substitute the expression for the variable into the other equation.

- Solve the resulting equation for the remaining variable.

- Substitute the value for the remaining variable back into one of the original equations to find the value of the other variable

Using this method with the given equations

- x - y = 9 -> x = 9 + y

- 3x + 2y = 22 -> 3(9 + y) + 2y = 22

- Simplifying and solving for y: 27 + 5y = 22 -> 5y = -5 -> y = -1

- Substituting y = -1 into x = 9 + y: x = 8

To check this solution, we can substitute these values back into both original equations and confirm that they are true statements.

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