Sara is studying for her dba. she studied for 31/2 hours before dinner, then for another
45 minutes after dinner. how long did sara study in all?

Answer:

\(\frac{35}{12}\)

Step-by-step explanation:

\(\frac{17}{3} -\frac{11}{4}=\)

\(\frac{68}{12}-\frac{33}{12}=\)

\(\frac{35}{12}\)

Answer:

2 11/12

Step-by-step explanation:

Well... technically 5 2/3 and 2 3/4 are fractions so you subtract em

Answer:

D. The money that Kai started with before he mowed any lawns.

Step-by-step explanation:

We Know

The equation is y = mx + b

The x represents the number of lawns that Kai mows.

What does the y-intercept represent in this equation?

The y-intercept is when the x = 0, meaning the y-intercept is the amount of money he has when mowing 0 lawn. So, the answer is D.

Answer:

The Answer is D

Step-by-step explanation:

Var(x)  is equals to 13.

Variance is a measure of the spread or dispersion of a set of data from its mean. It is calculated by taking the differences between each data point and the mean, and then squaring the differences. The larger the variance, the more spread out the data is from the mean.

The formula for variance is Var(x) = E(x^2) - (E(x))^2.

Given that E(x) = 1, Var(x^2) = 5, and E(x^2) = 14, we can plug these values into the formula and solve for Var(x).

Var(x) = E(x^2) - (E(x))^2
Var(x) = 14 - (1)^2
Var(x) = 14 - 1
Var(x) = 13

Therefore, the variance of x is 13.

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Hello!

10 seconds to return to the ground.

7 seconds to reach 576 feet above the ground.

Find the amount of time taken to reach the ground by setting the equation equal to 0:

0 = -16t² + 80t + 800

Factor out -16 from the equation:

0 = -16(t² - 5t - 50)

Factor the terms inside of the parenthesis:

0 = -16(t - 10)(t + 5)

Find the zeros:

t - 10 = 0

t = 10

t + 5 = 0

t = -5

Time can only be positive in this instance, so the correct answer is 10 sec.

Find the time by substituting in 576 for the height:

576 = -16t² + 80t + 800

Subtract 800 from both sides:

-224 = -16t² + 80t

Rearrange:

0 = -16t² + 80t + 224

Simplify:

0 = -16(t² - 5t - 14)

0 = -16(t - 7)(t + 2)

t = 7 seconds.

Answer:

39

Step-by-step explanation:

We assume that with a linear relationship between two variables, for any fixed value of x, the observed residuals follows a normal distribution.

This assumption is based on the Central Limit Theorem, which states that when the sample size is large enough, the distribution of sample means will be approximately normal, regardless of the shape of the underlying population distribution.

In the case of a linear relationship between two variables, we can assume that the residuals (the difference between the observed y values and the predicted values based on the linear regression model) follow a normal distribution with mean 0 and constant variance. This assumption is important because it allows us to use statistical methods that rely on normality, such as hypothesis testing and confidence intervals.

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The reasoning provided, "If you build it, they will come. You build it. Therefore, they will come," is an example of deductive reasoning.

Deductive reasoning is a logical process that involves drawing specific conclusions based on general principles, premises, or known facts. In this example, the premise is "If you build it, they will come," which establishes a cause-and-effect relationship. The subsequent statement, "You build it," serves as a confirmation of the premise. From these premises, the conclusion is drawn: "Therefore, they will come." The conclusion logically follows from the premises, making it an example of deductive reasoning.

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The descriptions that can describe more than one triangle are

This is further explained below.

Generally, An angle is a figure produced in Euclidean geometry by two rays, which are referred to as the sides of the angle, and which have a common endpoint, which is referred to as the vertex of the angle. The plane that includes two rays will always contain the angles that are generated by the beams. Another way that angles are created is when two planes cross with one another. These particular angles are referred to as dihedral angles.

In conclusion, Measurements of 40 degrees, 60 degrees, and 80 degrees in relation to one another may define more than one triangle.

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y increases to 100 after approximately 6.7335 time units and drops to 1 after approximately 1.7273 time units. Rounded to four decimal places, the answers are:

t = 6.7335 (for y = 100)

t = 1.7273 (for y = 1)

This is a first-order differential equation with a constant coefficient, which can be solved using separation of variables:

dy/dt = k*y

dy/y = k*dt

Integrating both sides, we get:

ln(y) = k*t + C

where C is the constant of integration. Solving for y, we get:

y = e^(kt+C) = Ce^(kt)

where C = e^C is another constant of integration. Using the initial condition y(0) = y0 = 6, we get:

y = y0e^(kt)

To find the value of k, we use the fact that y increases to 100 or drops to 1:

For y = 100:

100 = 6e^(kt)

e^(k*t) = 100/6 = 50/3

k*t = ln(50/3)

t = ln(50/3)/k

For y = 1:

1 = 6e^(kt)

e^(k*t) = 1/6

k*t = ln(1/6) = -ln(6)

t = -ln(6)/k

To find the value of k, we can use either equation:

k = ln(50/3)/t = -ln(6)/t

Substituting the values, we get:

k = ln(50/3)/ln(50/3)*(-ln(6)) = -0.3293

Therefore, the equation for y is:

y = 6e^(-0.3293t)

To find the time at which y increases to 100 or drops to 1, we solve for t:

For y = 100:

100 = 6e^(-0.3293t)

t = ln(100/6)/(-0.3293) = 6.7335

For y = 1:

1 = 6e^(-0.3293t)

t = ln(1/6)/(-0.3293) = 1.7273

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Answer:

30

Step-by-step explanation:

Sum of the ratios = 3 + 4 + 5 = 12

Smallest share = 18 bags

Ratio of the smallest share = 3

Let the largest share = x

From the question

18 ------------ 3

x --------------5

Cross multiply

3x = 18 × 5

Dividing bothsides by 3

X = 18 × 5/ 3

X = 90 / 3

X = 30

Therefore.

The largest share = 30

Answer:

The answer is 0.68

Step-by-step explanation:

you simply divide 3.06 by 4.5

For a standard normal distribution, given p(z < c) = 0.624, we need to the balance  value of c.

This means that we need to find the z-value that has an area of 0.624 to the left of it in a standard normal distribution.To find this value, we can use a standard normal table or a calculator with a standard normal distribution function.Using a standard normal table:We look up the area of 0.624 in the body of the table and find the z-value in the margins. The closest area we can find is 0.6239, which corresponds to a z-value of 0.31.

Therefore, c = 0.31.Using a calculator:We can use the inverse normal function of the calculator to find the z-value that corresponds to an area of 0.624 to the left of it. The function is denoted as invNorm(area to the left, mean, standard deviation). For a standard normal distribution, the mean is 0 and the standard deviation is 1. Therefore, we have:invNorm(0.624, 0, 1) = 0.31Therefore, c = 0.31.

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There are a total of 25⁸ ways to select an unordered group of eight numbers between 1 and 25 inclusive with repetition. This is because for each of the eight numbers, there are 25 options to choose from, and the choices are independent of each other.

To find the fraction of these ways in which the sum of the numbers is even, we need to use the principle of inclusion and exclusion. First, we count the total number of ways in which the sum of the numbers is odd. This is equal to the number of ways in which an odd number of the eight numbers are odd, and the rest are even. There are 12 odd numbers and 13 even numbers between 1 and 25 inclusive.

Using the binomial coefficient, the number of ways in which the sum of the numbers is odd is:

C(8,1) * 12¹* 13⁷ + C(8,3) * 12³ * 13⁵ + C(8,5) * 12⁵ * 13³ + C(8,7) * 12⁷ * 13¹ = 9,676,454,400

Therefore, the number of ways in which the sum of the numbers is even is:

25^8 - 9,676,454,400 = 6,400,821,094,400

And the fraction of these ways is:

6,400,821,094,400 / 25⁸ = 0.5351

So, approximately 53.51% of the ways to select an unordered group of eight numbers between 1 and 25 inclusive with repetition have an even sum.

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Answer:

A, see attachment for work.

Step-by-step explanation:

Answer: i think it is 538.4

Step-by-step explanation:

The value of the logarithmic equations when solved are :

log₃(x) = -3

To solve this logarithmic equation, we can use the property:

x = b^(logₓ(y))

So, x = 3^(-3)

x = 1/(3^3) = 1/27

The solution for the equation is x = 1/27.

log₂(x² + 6x) = log₂(x - 4)

Since the bases are the same, we can set the arguments equal to each other:

x² + 6x = x - 4

Factor the quadratic equation:

(x + 4)(x - 1) = 0

x = -4, 1

2 * log₂(x) - log₂(x + 3) = 2

We can use the properties of logarithms to rewrite the equation:

log₂(x²) - log₂(x + 3) = 2

log₂(x² / (x + 3)) = 2

x² / (x + 3) = 2²

x² / (x + 3) = 4

x² - 4x - 12 = 0

(x - 6)(x + 2) = 0

x = 6, -2

log₇(m) = 1/3 * log₇(64) + 1/2 * log₇(121)

Using the power rule for logarithms, we can rewrite the equation as:

log₇(m) = 1/3 x (4 x log₇(2)) + 1/2 x (2 x log₇(11))

log₇(m) = (4/3) x log₇(2) + log₇(11)

log₇(m) = log₇(2^(4/3) x 11)

m = 2^(4/3) x 11

m = (2^(4/3)) x 11 ≈ 4.16 x 11 = 45.76

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Answer:

90

Step-by-step explanation:

A right angle is always 90 degrees

Answer:

a-ii

b-iii

c-v

d-i

e-vi

please mark as brainliest

Based on the information provided, we cannot conclusively determine how drivers react to sudden large increases in the price of gasoline. However, we can use the recorded speeds of cars passing the service station before and after the price increase to determine if there is a statistically significant difference in speeds.

A hypothesis test can be conducted to determine if there is a significant difference in means between the two groups. If the p-value is less than the significance level, we can conclude that the speeds differ and suggest that the price increase had an impact on driver behavior. However, if the p-value is greater than the significance level, we cannot conclude that there is a significant difference in speeds and suggest that other factors may have influenced driver behavior.

To determine how drivers react to sudden large increases in the price of gasoline, we can follow these steps:

1. Collect data: The statistician recorded the speeds (mph) of cars passing a large service station before and after the price of gasoline increased by 15 cents.

2. Analyze the data: Compare the recorded speeds before and after the price increase to see if there's a noticeable difference.

3. Conduct a hypothesis test: Perform a statistical test to determine if the observed differences in speeds are significant or due to chance. For example, you can use a paired t-test or another appropriate test based on the data collected.

4. Draw conclusions: If the test shows a significant difference in speeds, we can conclude that drivers' behavior changed in response to the price increase. Otherwise, we cannot confidently say that the speeds differ due to the price increase.

By following these steps, you can determine if drivers' speeds differ as a result of sudden large increases in the price of gasoline.

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Answer:

1 answer

Step-by-step explanation:

i solved it on my calculater

Answer:

13=11/3(0)+c

c=13

y=11/3X+13

Step-by-step explanation:

please like and brainliest mee

Using the theorem of vertically opposite angle, ∠3 and ∠4 are equal to 113°.

When two lines intersect each other, then the opposite angles, formed due to intersection are called vertically opposite angles. A pair of vertically opposite angles are always equal to each other.

\(2x+23 = 5x-112\\\\23+112 = 5x-2x\\\\135 = 3x\\\\x = \frac{135}{3} = 45\\\)

∠3 = 2x + 23 = 2 * 45 + 23 = 113°

∠4 = 5x - 112 = 5 * 45 - 112 = 113°

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Thee appropriate confidence level to use would be 95%. The rate of fatalities is higher for patients transported by helicopter than those transported by ground services. Furthermore, we have also determined the appropriate confidence level to use if we follow up the hypothesis test with a confidence interval.

Here, Null Hypothesis H0: The rate of fatalities for patients transported by helicopter is less than or equal to that transported by ground services. Alternative Hypothesis H1: The rate of deaths for patients transported by helicopter is more than that transported by ground services.

a) Given that :

n1 = 61909,

n2 = 161566,

x1 = 7813

x2 = 17775.

The sample proportions are p1= x1 / n1= 0.126 and p2 = x2 / n2= 0.11.

The pooled proportion is:

p = (x1 + x2) / (n1 + n2)

= (7813 + 17775) / (61909 + 161566)

= 0.11012.

The test statistic for testing the null hypothesis is given by:

z = (p1 - p2) / SE (p1 - p2) where

SE(p1 - p2) = √ [p (1 - p) (1 / n1 + 1 / n2)]

SE (p1 - p2) = √ [(0.11012) (0.88988) (1 / 61909 + 1 / 161566)]

SE (p1 - p2) = 0.0025

z = (0.126 - 0.11) / 0.0025

z = 6.4

At a 0.01 significance level, the critical value for the right-tailed test is:

z = 2.33

We reject the null hypothesis since the test statistic is greater than the critical value. So, there is enough evidence to support the claim that the rate of fatalities is higher for patients transported by helicopter than those transported by ground services.

b) As we have rejected the null hypothesis, we can say that the proportion of patients transported by helicopter who died due to severe traumatic injuries is significantly higher than that of patients transported by ground services. To find the appropriate confidence interval, we need to know the sample size, the sample proportion, and the confidence level to find the margin of error. So, to answer the question, we need to know the desired confidence level. The appropriate confidence level would be 95%.

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Clear communication, defined roles, regular monitoring, continuous improvement, flexibility, collaboration, training, and efficient resource allocation are effective strategies to maintain process flow.

To ensure that a process stays on track and progresses in the right direction, several effective strategies can be implemented. These strategies include:

Clear Communication: Establishing open and transparent communication channels is crucial. Clearly communicate goals, expectations, and timelines to all stakeholders involved in the process.

Define Roles and Responsibilities: Assign specific roles and responsibilities to individuals or teams involved in the process. Clearly outline their tasks and ensure they understand their contributions to the overall progress.

Continuous Improvement: Encourage a culture of continuous improvement by seeking feedback from team members and stakeholders. Use feedback to identify areas for optimization and make necessary adjustments to keep the process on track.

Flexibility and Adaptability: Be prepared to adapt to unforeseen circumstances or changes in requirements. Foster a flexible mindset among team members to accommodate necessary adjustments without derailing the process.

Regular Training and Development: Provide training and development opportunities to enhance the skills and knowledge of team members. Equipping them with the necessary tools and expertise will contribute to maintaining the process's flow in the right direction.

Efficient Resource Allocation: Ensure that resources, such as time, budget, and manpower, are allocated effectively and efficiently. Avoid bottlenecks and ensure that resources are available when needed to prevent disruptions in the process.

In summary, the key strategies to keep a process flowing in the right direction include clear communication, defining roles and responsibilities, regular monitoring and evaluation, continuous improvement, flexibility and adaptability, collaborative approach, regular training and development, and efficient resource allocation.

Complete question should be What are some effective strategies to maintain the flow of a process in the right direction?

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Answer:

Step-by-step explanation:

Equation representing the relationship between the calories from Protein and fat is,

6p + 9f = 60

1). A). If p = 5 grams  and f = 2 grams,

        Number of calories = (6×5) + (9×2)

                                         = 30 + 18

                                         = 48 calories

  B). If p = 10.5 grams  and f = 2 grams,

        Number of calories = (6×10.5) + (9×2)

                                         = 63 + 18

                                         = 81 calories

  C). If p = 8 grams and f = 4 grams

        Number of calories = (6×8) + (9×4)

                                         = 48 + 36

                                         = 84 calories

(2). If f = 6 grams, then we have to calculate the grams of protein from the given equation.

    4p + (9×6) = 60

    4p + 54 = 60

    4p = 60 - 54

    p = \(\frac{6}{4}=1.5\) grams

(3). Combination of 6 grams of fat and 1.5 grams of protein in a snack gives 60 calories of energy.

The missing length in the right triangle as given in the task content is; 156.

It follows from the complete question that the triangle given is a right triangle and the missing length (longest side) can be evaluated by means of the Pythagoras theorem as follows;

x² = 144² + 60²

x² = 20736 + 3600

x² = 24,336

x = √24336

x = 156.

Remarks: The complete question involves a right triangle and the missing length is the longest side.

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The correct statement is that the acceleration is never zero. Hence, the correct option is: its acceleration is never zero.

Given that the position of a particle moving in the xy plane at any time t is given by \((3t2 - 6t, t2 - 2t)m\).

The correct statement about the moving particle is that its acceleration is never zero.

Here's the Acceleration is defined as the rate of change of velocity. The velocity of a moving particle at any time t can be obtained by taking the derivative of the position of the particle with respect to time.

In this case, the velocity of the particle is given by:

\(v = (6t - 6, 2t - 2)m/s\)

Taking the derivative of the velocity with respect to time, we get the acceleration of the particle:

\(a = (6, 2)m/s2\)

Since the acceleration of the particle is not equal to zero, the correct statement is that the acceleration is never zero.

Hence, the correct option is: its acceleration is never zero.

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The next two terms in the arithmetic progression will be 15 and 21.

Based on the information given, the following can be deduced.

First term = 3

Second term = 9

Common difference = 9 - 3 = 6

The nth term of an arithmetic progression is given as: = a + (n-1)d

Therefore, 3rd term = a + 2d = 3 + 2(6) = 3 + 12 = 15

4th term = a + 3d = 3 + 3(6) = 3 + 18 = 21

The next 2 terms are 15 and 21.

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