a.
39. A digital watch set accurately at 8:30 am and then lost 2 second
every minute. What time was indicated on the watch at 6:30 pm
of the same day. If the watch operated in a continuous way until
that time.​

Answer:

The magnitude of the vector is 9.165 and it's direction is 40.6°

Step-by-step explanation:

A vector quantity is a quantity that has both size (magnitude) and direction. Examples of vector quantities are force, velocity and impulse.

Magnitude of vector v is given by

|v| = √6²+7²

= √36+49

= √84

= 9.165

Direction of vector v is obtained by:

\( \tan( \theta) = \frac{x}{y} \)

\(\theta = {tan}^{ - 1} ( \frac{6}{7}) \)

\(\theta = {40.6°}\)

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9514 1404 393

Answer:

  140°

Step-by-step explanation:

The long arc intercepted by angle c is 360° -80° = 280°. The measure of inscribed angle c is half the measure of the arc it intercepts.

  c = 280°/2 = 140°

The probability that a subject would guess more than 20 correct in a series of 36 trials is 0.0001

In a series of 36 trials, if the subject is guessing randomly, then the probability of correctly guessing odd or even is 1/2.

Let X be the number of correct guesses in a series of 36 trials. X follows a binomial distribution with parameters n = 36 and p = 1/2.

The probability of guessing more than 20 correct is:

P(X > 20) = 1 - P(X ≤ 20)

Using a binomial distribution table, we can find that P(X ≤ 20) = 0.9999 (rounded to four decimal places).

Therefore: P(X > 20) = 1 - 0.9999 = 0.0001

So the probability that a subject would guess more than 20 correct in a series of 36 trials is 0.0001 (rounded to four decimal places).

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Answer:

3, 1

6, 2

12, 6

24, 8

Step-by-step explanation:

All of them, when reduced, will equal (3, 1)

Answer:

Step-by-step explanation:

Answer:

(5,100)

Step-by-step explanation:

Answer:y’all it’s all of them ABE

Step-by-step explanation:

The statements that are correct are:
B) The model predicts that studying for 1.5 hours will result in an exam score of 60.
C) The model predicts that studying for 2.5 hours will result in an exam score of 70.

A scatter plot is a collection of points plotted on two axes, horizontal and vertical. Scatter plots are useful in statistics because they illustrate the extent, if any, of correlation between the values of observed quantities or phenomena (called variables).

The scatter plot shows a positive relationship between study time and exam scores, with exam scores generally increasing as study time increases. However, the relationship is not linear and the increase in exam score is not always 10 points for each additional hour of study.

A) is not correct because the relationship between study time and exam score is not linear, and the increase in exam score is not always 10 points for each additional hour of study.

D) is not correct because the wording is unclear, it should be "The model predicts that studying for 4 hours will result in an exam score of (a specific number)".

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Answer:

3 6/10, 5 2/5, 5 2/6, 3 3/9, 4 2/7, 6 6/8

Step-by-step explanation:

divide numerator by denominator

A z-score of 0 indicates that the person's score is equal to the mean, so they are right at the Average Performance level.the z-score of a person who scored 300 on the exam is 0.

The z-score of a person who scored 300 on the exam, we can use the formula:

z = (x - μ) / σ

where z is the z-score, x is the raw score, μ is the mean, and σ is the standard deviation.

In this case, the person scored 300 on the exam, which is equal to the mean (μ). Therefore, we can substitute these values into the formula:

z = (300 - 300) / 40

Simplifying the equation, we have:

z = 0 / 40

Since any number divided by zero is undefined, we can conclude that the z-score of a person who scored 300 on the exam is 0.

The z-score measures the number of standard deviations a data point is away from the mean. In this case, a z-score of 0 indicates that the person's score is equal to the mean, so they are right at the average performance level.

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Answer: the y intercept is 0

Step-by-step explanation:

The number of possible ways in which the selection can be done is this: 12320.

The formula for the number of ways that the selection can be obtained is this:

8C3 x 11C10 x 6C3

This can be resolved this way:

8! / 3!(8-3)! × 11!/ 10!(11-10)! × 6!/ 3!(6-3)!

Now the next step will be to solve for all the figures obtained

56 × 11  × 20

= 12320.

In order to arrive at the right answer, it is important to first resolve the figures in brackets before multiplying and then dividing. The rule of BODMAS should be followed.

Question:

A catering service offers 8 appetizers, 11 main courses, and 6 desserts. A banquet chairperson is to select 3 appetizers, 10 main courses, and 3 desserts for a banquet. In how many ways can this be done?

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Answer:

26

Step-by-step explanation:

Answer: 3.14 · 4²

Step-by-step explanation:

A = π · r²

A = 3.14 · 4²

Hope this helps!

1 5/16

Your answer should be above.

Answer:

A

Step-by-step explanation:

Answer:

609.55

Step-by-step explanation:

789.34−45.75+145.67+503−782.71=609.55

Answer:

4/20

Step-by-step explanation:

4. To obtain the graph of g(x) = \(-e^{x-4}\) from the graph of f(x) =  \(e^{x}\), we need to apply a vertical reflection (reflect over the x-axis).

what is function?

In mathematics, a function is a relationship between two sets of elements, called the domain and the range, such that each element in the domain is associated with a unique element in the range.

1. To obtain the graph of g(x) = \(-e^{x-4}\) from the graph of f(x) = \(e^{x}\), we need to apply a vertical shift down by 4 units. This means that every point on the graph of f(x) will be shifted down by 4 units. The graph of g(x) will have the same shape as the graph of f(x), but will be shifted down by 4 units.

2. To obtain the graph of g(x) = \(e^{(x+5)}+1\) from the graph of f(x) = \(e^{x}\), we need to apply a vertical shift up by 1 unit and a horizontal shift left by 5 units. The vertical shift up by 1 unit means that every point on the graph of f(x) will be shifted up by 1 unit. The horizontal shift left by 5 units means that every point on the graph of f(x) will be shifted 5 units to the left. The graph of g(x) will have the same shape as the graph of f(x), but will be shifted up by 1 unit and to the left by 5 units.

3. To obtain the graph of g(x) = \(e^{(x+5)+1}\) from the graph of f(x) = \(e^{x}\), we need to apply a horizontal shift left by 5 units and a vertical shift up by 1 unit. The horizontal shift left by 5 units means that every point on the graph of f(x) will be shifted 5 units to the left. The vertical shift up by 1 unit means that every point on the graph of f(x) will be shifted up by 1 unit. The graph of g(x) will have the same shape as the graph of f(x), but will be shifted to the left by 5 units and up by 1 unit.

4. To obtain the graph of g(x) = \(-e^{x-4}\) from the graph of f(x) = \(e^{x}\), we need to apply a vertical reflection (reflect over the x-axis). This means that every point on the graph of f(x) will be reflected over the x-axis. The graph of g(x) will have the same shape as the graph of f(x), but will be reflected over the x-axis.

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Answer:

Step-by-step explanation:

The answer is C

Answer:

the answer is x=3

Step-by-step explanation:

-3x=1-7

-3x=-6

-x=-6+3

-x=-3

x=3

Step-by-step explanation:

(-8-9)+23

-17+23

6.........

The value of algebraic expression [(-8) + ( -9)] + 23 is 6.

Here,

We have to simplify;  the sum of -8 and -9, increased by 23.

And, find an algebraic expression.

What is Algebraic expression?

An algebraic expression in mathematics is an expression which is made up of variables and constants, along with algebraic operations.

Now,

The written expression is, the sum of -8 and -9, increased by 23.

It can be written as,

⇒ [(-8) + ( -9)] + 23

⇒ - 8 - 9 + 23

⇒ - 17 + 23

⇒ 6

Hence, The value of algebraic expression [(-8) + ( -9)] + 23 is 6.

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Answer:

Hope this helps

Step-by-step explanation:

5) Since AB = BC, this means that  ∠1 = ∠2

this would mean that BD bisects ∠ABC

Line AD = DC, and BD intersects at the angle of ADC, meaning that

∠3 = ∠4

6) M must be the midpoint of AC as M is perpendicular to BD, making M the Midpoint of AC

Answer:

0.03

Step-by-step explanation:

Answer:

.03 on Khan Academy

Step-by-step explanation:

In order to ensure that depositors would get their money back in the event of a bank run, the Federal Reserve can support the bank by lending money to the bank. Option C

When a bank faces a bank run and experiences a sudden and significant increase in withdrawals, it may face a liquidity crisis, meaning it may not have enough cash on hand to meet the withdrawal demands of depositors.

To address this, the Federal Reserve can step in and provide loans or emergency funding to the bank to help it meet its obligations to depositors. This lending can help stabilize the bank's liquidity position and ensure that depositors are able to access their funds.

It is important to note that this support from the Federal Reserve is typically done on a temporary basis and is intended to help address the immediate liquidity needs of the bank during a crisis

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Answer:

Step-by-step explanation:

(c) The number of gadgets the company must produce and sell in order to incur the least cost = 40 gadget.

We experienced a few technical difficulties when trying to submit the answers for (a) and (b) questions, but we made it much easier because we have the screenshots and we have attached it in the diagram below.

Thanks

The blood platelet count is an illustration of normal distribution,

Approximately 95% of the data lies within 2 standard deviations of the mean.

There are approximately 99.7% of women with platelet count between 65.2 and 431.8.

Given parameters are:

μ = 248.5

σ = 61.1

(a) The percentage within 2 standard deviation of mean or between 126.3 and 370.7,

Start by calculating the z-score, when x = 126.3 and x = 370.7

Z = x-μ / σ

Therefore,

Z = 126.3-248.5/61.1

Z = -2

Also,

Z = 370.7-248.5/61.1

Z = 2

The empirical rule states that:

Approximately 95% of the data lies within 2 standard deviations of the mean.

Hence, there are approximately 95% of women with platelet count within 2 standard deviations of the mean.

(b) The percentage with platelet count between 65.2 and 431.8

Start by calculating the z-score, when x = 65.2 and x = 431.8

Z = 65.2-248.5/61.1

Z = -3

And,

Z = 431.8-248.5/61.1

Z = 3

The empirical rule states that:

Approximately 99.7% of the data lies within 3 standard deviations of the mean.

Hence, there are approximately 99.7% of women with platelet count between 65.2 and 431.8.

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Answer:

hello my name Nidhi, please mark me as brainliest bcoz I need it

Answer:

D

Step-by-step explanation:

why the panic ? you only need to compare the tiles with the actual terms in the equations and add them up.

x²

-x²

-x -x

x x x x (clearly that means 4x)

-1 -1 -1

1 1

so, we see it is D.

Answer:

yes, it does

Step-by-step explanation:

point (-1, -1)

if (-1, -1) lies on this line, it will make below equation correct:

Answer is yes

Answer:

Yes it does.

Step-by-step explanation:

For (-1, -1) to lie on the line y= 4x + 3 ; that would mean substituting x=-1 into the expression we should be able to get y=-1 so let's test that.

Substituting x=-1 in y= 4x + 3;

we have : y= 4(-1)+ 3 = -4 +3 = -1;

Since y=-1 tallies with the point (-1, -1)

Examining the graph it can be deduced that

The domain is

The range is

The graph is not a function

To qualify as a function, any input (x-value) of a graph must be linked to a single output (y-value). Therefore, each x-value ought to have one and only one y-value that matches it.

A method for identifying whether or not a given graph is representative of a function is by conducting a vertical line test. To achieve this, vertically draw lines through the graph. When every vertical line hits the graph at just one point, then the illustration aptly presents a function. Conversely, if the graph forms multiple intersection points with any vertical line, it isn't classified as a functional representation.

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If you attempt to use a local variable before it has been given a value the answer is a . A compiler error will occur .

Given :

What is local variable ?

A local variable is a variable that is only accessible within a specific part of a program. These variables are usually local to a subroutine and are declared .

Compilation error refers to a state when a compiler fails to compile a piece of computer program source code, either due to errors in the code, or, more unusually, due to errors in the compiler itself.

Here the local variable is used inside the function so we need to first give a value means i = 0 or anything without that the compiler error will occur .

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Full question :

If you attempt to use a local variable before it has been given a value,

Select one:

a. a compiler error will occur

b. the local variable will always contain the value 0

c. the results will be unpredictable

d. the local variable will be ignored