please help due in a few minutes!!

Answer:

C. 3

Step-by-step explanation:

One of the (many) properties of definite integrals is
\(\mbox{\large \int\limits _{a}^{b}f(x)\,dx + \int\limits _{b}^{c}f(x)\,dx = \int\limits }_{a}^{c}f(x)\,dx\)

Therefore
\(\mbox{\large \int\limits _{-2}^{5}f(x)\,dx + \int\limits _{5}^{2}f(x)\,dx = \int\limits }_{-2}^{2}f(x)\,dx\)

Given

\(\mbox{\large \int\limits _{-2}^{5}f(x)\,dx = 11}}}\para\)

and

\(\mbox{\large \int\limits _{-2}^{2}f(x)\,dx = 14}}\)

We get

\(\mbox{\large 11+ \int\limits _{5}^{2}f(x)\,dx} = 14\)

Subtracting 11 from both sides we get

\(\mbox{\large \int\limits _{5}^{2}f(x)\,dx} = 14 - 11 = 3\\\)

Answer: Choice C which is 3

The correct answer is not provided among the options given.

To find the speed of the particle at time t = 0, we need to calculate the magnitude of its velocity vector at that time. The velocity vector is given by the derivatives of the parametric equations with respect to time:

v(t) = (dx/dt, dy/dt)

Taking the derivatives, we have:

dx/dt = 5 cos(t)

dy/dt = -1

Now, let's substitute t = 0 into these derivatives to find the velocity at that time:

dx/dt |t=0 = 5 cos(0) = 5

dy/dt |t=0 = -1

The velocity vector at t = 0 is v(0) = (5, -1). The speed of the particle is the magnitude of this vector:

speed = ||v(0)|| = sqrt((5)^2 + (-1)^2) = sqrt(25 + 1) = sqrt(26) ≈ 5.099

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The position of an object moving along a path in the xy-plane is given by the parametric equations x(t)=5 sin ( Tet) and y(t)= (2+ –1). The speed of the particle at time t = 0 is A) 3.422 B) 11.708 C) 15.580 D) 16.209

Answer:

8

Step-by-step explanation:

Expression:

(-B)2

Let's substitute the value of B into this expression:

B = -4

(-B)2

[-(-4)]2

Notice how there are two negative signs int this expression:

[-(-4)]2

Well, there is an invisible 1 behind the first negative sign.

[-(-4)]2

[-1(-4)]2

All we have to do now is multiply:

[-1(-4)]2

(4)2

(4)2

= 8

Therefore, the value of the expression is 8.

Answer:

y = -9x - 24

x = -27x - 84

Step-by-step explanation:

a. The appropriate model for this problem is the Poisson distribution because it's model  the number of rare events occurring in a fixed interval of time or space.

b.  Using the model  the probability that there will be no episodes in this period is 0.82%.

c. Using the model,  the probability that there are more than three episodes in this period is  70.57%.

(a) The appropriate model for this problem is the Poisson distribution, which models the number of rare events occurring in a fixed interval of time or space. The conditions for a Poisson distribution are:

In this case, we are interested in the number of volcanic episodes occurring in a 2-year period, which is a fixed interval of time. The events are rare and independent of each other, and the average rate of events is given as 2.4 per year. Therefore, the Poisson distribution is appropriate for modeling X.

The parameter value for the Poisson distribution is λ, the average rate of events per unit of time or space. In this case, λ = 2.4 x 2 = 4.8 for the 2-year period.

(b) The probability that there will be no episodes in this period is given by the Poisson probability mass function:

P(X = 0) = e^(-λ) * λ^0 / 0! = e^(-4.8) * 4.8^0 / 0! = 0.0082 (rounded to four decimal places)

Therefore, the probability that there will be no episodes in the 2008-2009 period is approximately 0.0082, or 0.82%.

(c) The probability that there are more than three episodes in this period is given by the complement of the probability that there are three or fewer episodes:

P(X > 3) = 1 - P(X ≤ 3)

We can use the Poisson cumulative distribution function to calculate P(X ≤ 3):

P(X ≤ 3) = Σ(e^(-λ) * λ^k / k!) for k = 0 to 3

P(X ≤ 3) = e^(-4.8) * (4.8^0 / 0! + 4.8^1 / 1! + 4.8^2 / 2! + 4.8^3 / 3!)

P(X ≤ 3) = 0.2943 (rounded to four decimal places)

Therefore, P(X > 3) = 1 - P(X ≤ 3) = 1 - 0.2943 = 0.7057 (rounded to four decimal places)

Therefore, the probability that there are more than three episodes in the 2008-2009 period is approximately 0.7057, or 70.57%.

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The factored form of the expression a²b - ab² is, ab(a - b).

There are three types of basic arithmetic laws of operation.

Commutative law for addition and multiplication states,

a + b = b + a.

a×b = b×a.

Distributive law states,

a(b ± c) = ab ± ac.

Associative law states,

a + (b + c) = (a + b) + c.

We know, Distributive law, a(b ± c) = ab ± ac.

Given, An expression a²b - ab²,

Now, The HCF of a²b and ab² is ab.

Therefore, a²b - ab².

= ab(a - b).

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Using the distance between two points and the midpoint concept, we have that:

1. The distance is of 10 units.

2. The other endpoint is (-7,-2).

3. The midpoint is of 5.

Suppose that we have two points, \((x_1,y_1)\) and \((x_2,y_2)\). The distance between them is given by:

\(D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\)

Hence, for item 1, the distance between A(1,1) and B(7,-7) is given by:

\(D = \sqrt{(7 - 1)^2+(-7 - 1)^2} = 10\)

The distance is of 10 units.

The midpoint between two points is the halfway point between them, and is found using the mean of the coordinates.

In item 2, we have that E(-1,0) is the midpoint of C(5,2) and D(x,y), hence:

-1 = (x + 5)/2

x + 5 = -2.

x = -7.

0 = (y + 2)/2

y + 2 = 0

y = -2.

The other endpoint is (-7,-2).

On item 3, the midpoint is given by:

(-2 + 12)/2 = 5.

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The expression in the a + ib form:- 8  +  2i      

What is Complex number?

Every complex number may be represented in the form a + bi, where a and b are real numbers. A complex number is an element of a number system that extends the real numbers with a specific element labeled I sometimes known as the imaginary unit, and satisfying the equation i2 = 1.

√16 + √-64  +  √16  - √-36

4  +  √64 • -1   + 4  - √36 • -1        (• is multiplication operator)

4  + 8√-1  + 4  -  6√-1                     ( taking square roots of 64 and 36)

4  + 8i  + 4 - 6i                        (remember √-1  = √-1  = i)

4 + 4  +8i  -  6i           (combine integers and simplify the imaginary terms)                  

8  +  2i      

Hence,  The expression √16+ √64+ √16-√-36 in the form of a + bi is

8  +  2i    

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Answer:

\(4<\sqrt{21}<5\)

Step-by-step explanation:

\(\sqrt{16} <\sqrt{21}<\sqrt{25} \\ \\ 4<\sqrt{21}<5\)

The statisticians evaluate all of the above options: A. The population being measured, B. The method used for the survey, and C. The outcome of the survey.

To measure the quality of a survey, statisticians consider various factors related to the survey process and its outcomes. Evaluating only one aspect may not provide a comprehensive understanding of the survey's quality.

A. The population being measured: The quality of a survey depends on how well the target population is defined and represented.

Statisticians assess whether the chosen population accurately reflects the intended group and if any biases or sampling errors are present.

B. The method used for the survey: The survey methodology plays a crucial role in obtaining reliable and valid data.

Statisticians assess the survey design, sampling techniques, data collection methods, questionnaire quality, and other factors to determine if the chosen method is appropriate and likely to yield accurate results.

C. The outcome of the survey: The survey's outcomes are analyzed to evaluate the quality of the data collected. This includes examining response rates, data completeness, measurement validity, reliability, and other statistical measures.

Statisticians assess the overall quality and integrity of the survey's outcomes to determine if they align with the research objectives and provide meaningful insights.

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Answer: 2m^2n.\sqrt{5}  

​

Step-by-step explanation: Factor 20 into its prime factors

          20 = 22 • 5  

To simplify a square root, we extract factors which are squares, i.e., factors that are raised to an even exponent.

Factors which will be extracted are :

          4 = 22  

Factors which will remain inside the root are :

          5 = 5  

To complete this part of the simplification we take the squre root of the factors which are to be extracted. We do this by dividing their exponents by 2 :

          2 = 2  

At the end of this step the partly simplified SQRT looks like this:

        2 • sqrt (5m4n3)  

Rules for simplifing variables which may be raised to a power:

  (1) variables with no exponent stay inside the radical

  (2) variables raised to power 1 or (-1) stay inside the radical

  (3) variables raised to an even exponent: Half the exponent taken out, nothing remains inside the radical. examples:

     (3.1) sqrt(x8)=x4

    (3.2) sqrt(x-6)=x-3

   (4) variables raised to an odd exponent which is  >2  or  <(-2) , examples:

     (4.1) sqrt(x5)=x2•sqrt(x)

    (4.2) sqrt(x-7)=x-3•sqrt(x-1)

Applying these rules to our case we find out that

     SQRT(m4n3) = m2n • SQRT(n)

sqrt (20m4n3) =

       2 m2n • sqrt(5n)  

2 m2n • sqrt(5n)

Answer:

In Group A, Maxine made a mistake, the solution should be (-3,4)

In Group B Sergio made a mistake, the solution should be (3,2)

Step-by-step explanation:

Substitute the given solutions to the system of equations, then see which ones are incorrect, after doing this solve the incorrect ones and you will have your answer.

Answer: TRUE

SUIIIIIIIII

The statement that "subset h of a vector space v is a subspace of v if the zero vector is in h" is true.

A subspace is a vector space that is also encompassed within another vector space.

So, while each subspace is a vector space in its own right, it is also defined with respect to another (bigger) vector space.

Three components must be demonstrated to prove that a subset is a subspace:

Additionally, demonstrate that it is closed.

Show that it is closed when scalar multiplication is used.

Show that vector 0 is a part of the subset.

As it is stated in the question;

h represents a subset of the vector space v.

The zero vector is contained in h.

This implies that h must be in the v subspace.

Hence, the statement that "subset h of a vector space v is a subspace of v if the zero vector is in h" is true.

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Answer:

The tenths place.

Step-by-step explanation:

If you want to buy 2 1/2 lb of cheese, you want to buy 2.5lbs. The tenths place is the first place after the decimal, and the place the scale needs to show to show you 2.5lbs.

Answer:

tenths place

Step-by-step explanation:

Step-by-step explanation:

which angle ? all of them ?

in such a case of intersection the various angles are mirrored or have to fulfill the complementary 180 degree criteria.

when we look either on the top or the bottom of the intersected line, there is always a half circle that can be drawn with its center in the intersection point.

therefore, the sum of such 2 neighboring angles (like 1 and 43 degrees) must be 180 degrees. the same for 2 and 3.

at the same time 2 is a mirrored version of 43 degrees, and 3 is a mirrored version of 1.

so,

1 + 43 = 180

1 = 137 degrees

2 = 43 degrees

3 = 137 degrees

Answer:

40

Step-by-step explanation:

Answer:

4.05768272

Step-by-step explanation:

The table shows the estimated digit and significant figures of each measurement and their representation with x.

Number of Measurement Estimated Digit Significant Figures

14.8 m 3 ✓

$10.25 - ✓

0.05 L - ✓

1.000 g/mL - ✓

1.200 - ✓

6200 cm - ✓

403 kg - ✓

For each measurement, the estimated digit is replaced with an x to represent the number with the correct number of significant figures. The correct representations for each measurement are:

Note that in some cases, the representation requires adding zeros to the right of the decimal point to indicate the number of significant figures. In other cases, the representation requires rounding up or down to the correct number of significant figures.

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1.62 is the volume (in cm3) of 2 troy ounces of pure gold .

What is full answer for density?

We determine the volume, V, corresponding to the given amount of gold. We do this by dividing the given mass, m, by the density, d, such that

               V = m/d

  m = 31.03 g

   d = 19.3 g/ml

We proceed with the solution

  V = m/d

     = 31.03/19.3

      ≈ 1.62 ml

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1. The probability of selecting a random sample of 200 individuals with a mean score of 50 or higher on the Beck Anxiety scale is essentially zero.

2.  The probability of selecting a random sample of 350 pre-PT students with a mean score of 140 or higher on the quantitative section of the GRE is essentially zero.

To calculate the probability in both cases, we can use the central limit theorem, which states that the distribution of sample means tends to be normal regardless of the shape of the population distribution, as long as the sample size is large enough.

1. Beck Anxiety Scale:

Given that the population mean (µ) is 48 and the standard deviation is 6, we need to calculate the probability of selecting a random sample of 200 individuals who score a mean of 50 or higher.

First, we need to calculate the standard error of the mean (SE):

SE = σ / √n

SE = 6 / √200

SE ≈ 0.424

Next, we need to calculate the z-score, which represents the number of standard deviations the sample mean is from the population mean:

z = (sample mean - population mean) / SE

z = (50 - 48) / 0.424

z ≈ 4.72

Using a standard normal distribution table or calculator, we can find the probability associated with a z-score of 4.72. The probability is practically zero, as the z-score is extremely high.

Therefore, the probability of selecting a random sample of 200 individuals with a mean score of 50 or higher on the Beck Anxiety scale is essentially zero.

2. Graduate Record Exam (GRE):

a) Verbal section:

Given that the population mean (µ) is 132 and the standard deviation is 7, we need to calculate the probability of selecting a random sample of 350 pre-PT students who scored a mean of 140 or higher.

First, we calculate the standard error of the mean (SE):

SE = σ / √n

SE = 7 / √350

SE ≈ 0.373

Next, we calculate the z-score:

z = (sample mean - population mean) / SE

z = (140 - 132) / 0.373

z ≈ 21.44

Using a standard normal distribution table or calculator, we find that the probability associated with a z-score of 21.44 is essentially zero.

Therefore, the probability of selecting a random sample of 350 pre-PT students with a mean score of 140 or higher on the verbal section of the GRE is essentially zero.

b) Quantitative section:

Given that the population mean (µ) is 134 and the standard deviation is 9, we follow the same steps to calculate the probability:

SE = σ / √n

SE = 9 / √350

SE ≈ 0.481

z = (sample mean - population mean) / SE

z = (140 - 134) / 0.481

z ≈ 12.47

Again, using a standard normal distribution table or calculator, we find that the probability associated with a z-score of 12.47 is essentially zero.

Therefore, the probability of selecting a random sample of 350 pre-PT students with a mean score of 140 or higher on the quantitative section of the GRE is essentially zero.

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Answer:

there are 13 players in a team

Answer:

so like you need to do this, then that and yeah u get that

Answer:

thetonwaka

Step-by-step explanation:

Answer:

3/5 will be greater than 4 while 1/2 will be an odd number.

the ratio is the relation(division) between 2 number

Step 1

Let

number 1= number of apples=8

number 2=total fruit = number of pears+ number of apples=5+8

number 2=13

Step 2

so, the ratio of apples to total fruit is 8/13

Answer:

This is gebber gabber but yes

Step-by-step explanation:

The correct statement is that F(x) < 0 over the intervals (-0.7, 0.76) and (2.5, ∞).

Value of subjective concept that refers to the word of important that an individual group of people places on the something it is often associated with principal beliefs and the standard that are accepted by society when you can be seen as a matter of how important something is true person of organization it is often seen as a reflection of funds for view and can help to save decision.

This can be seen by looking at the function's minimum and maximum values and its points of intersection with the x- and y-axes. The minimum value of (1.9, negative 5.7) is to the left of the x-axis, indicating that the function is negative over the interval (-0.7, 0.76). The maximum value of (0, 2) is above the x-axis, indicating that the function is negative over the interval (2.5, ∞).

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The percent of the second fruit salad is strawberries should be 10%.

= 25% - 15%

= 10%

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Sarah's final position would be negative. Therefore, option B is the correct answer.

Given that, Sarah starts at a positive position along the x-axis. She then undergoes a negative displacement.

A negative displacement means that Sarah has moved backward along the x-axis, so her final position would be negative.

Therefore, option B is the correct answer.

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The median age of the presidents at their death is 69.

The median is the value that is exactly in the middle of a dataset when it is arranged in order. It is a measure of central tendency which separates the lowest 50% from the highest 50% of values.

The median formula is {(n + 1) / 2}th, where “n” is the number of items in the set and “th” means the (n)th number. To find the median, first arrange the data points from smallest to largest.

The steps for finding the median differ depending on whether we have an odd or an even number of data points. If the number of data points is odd, the median is the middle data point in the list. If the number of data points is even, the median is the average of the two middle data points in the list.

In this case, the number of data points is even, that is 38. So, the median is:

= {(n + 1) / 2}th

= {(38 + 1) / 2}th

= 19,5th

Thus, it means the median is the average of the 19th and 20th in the data points. So, it will be:

Median = (68 + 70) / 2

Median = 138 / 2

Median = 69

Hence, the median age of the presidents at their death is 69.

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Although part of your question is missing, you might be referring to this full question: This list shows the age at which 38 U.S. Presidents died.

46 58 64 68 73 80 90

49 60 65 70 74 81 93

53 60 66 71 77 83

56 63 67 71 78 85

56 63 67 71 78 88

57 64 67 72 79 90

What is the median age of the presidents at their death?

A. 69

C. 68

b. 67.5

d. 70

Answer:

yes

Step-by-step explanation:

I believe the yes is yes