I need helppp, I’ll give brainliest

I Need Helppp, Ill Give Brainliest

Answers

Answer 1

The set of all possible y-values for the function h constitutes its range. The range is therefore [-3, 0].

what is range ?

The collection of all feasible output values (dependent variable) of a function is known as the range in mathematics. It is the totality of all possible numbers that the function can accept as input (an independent variable) and output. On the number line, the range is frequently represented by an interval or group of intervals. For instance, the range can be written as [-3, 3] if the domain of a function f(x) is [-2, 2] and its output numbers fall within [-3, 3].

given

The collection of all x-values for which h(x) is specified is the domain of the function h.

The graph's [-2, 4] domain can be determined by looking at the graph, which shows that it begins at x=-2 and concludes at x=4.

The set of all possible y-values for the function h constitutes its range. Looking at the graph, we can see that it takes all values between y=-3 and y=0, and that it begins at y=-3.

The range is therefore [-3, 0].

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The complete question is :-  The entire graph of the function h is shown in the figure below. Write the domain and range of h as intervals or unions of intervals.

-2

-3-

4-

domain =

range =


Related Questions

Snyder’s Moving company has two segments of customer: Small Business (SB) and Residential. 10% of Snyder’s 2,200 clients fall into both categories, using Snyder’s as their mover of choice for both their business and personal needs. The remaining clients are split evenly between segments. A client who falls into one category will use Snyder’s once every 3 years. Clients who fall into both categories use Snyder’s twice every 3 years. SB moves cost 15% more to the clients than Residential moves due to additional insurance costs for Snyder’s. The average profit Snyder’s makes per move, regardless of which type, is $260. Snyder recently launched a marketing campaign to all SB-only clients to encourage them to use Snyder’s for residential moves. 10% of recipients decided to do so. Assuming the campaign cost $500 to execute, how profitable was it?

Answers

The marketing campaign by Snyder's Moving company was profitable, generating an additional profit of $31,288 after subtracting the cost of the campaign. The total revenue generated after the campaign was $403,588.

To determine the profitability of the marketing campaign, we need to calculate the additional profit generated by the clients who were convinced to use Snyder's for residential moves.

Let's start by calculating the number of clients in each segment

Clients who fall into both categories, 0.1 x 2,200 = 220

Clients in each segment, (2,200 - 220) / 2 = 990

Now let's calculate the revenue generated by each segment

Revenue from clients in each segment: 990 clients x $260 profit per move = $257,400

Revenue from clients who fall into both categories: 220 clients x 2 moves x $260 profit per move = $114,400

Total revenue generated: $371,800

Now let's calculate the revenue generated after the marketing campaign

10% of 990 SB-only clients decided to use Snyder's for residential moves

0.1 x 990 = 99 clients

Additional revenue generated from these clients: 99 clients x $260 profit per move x 1.15 (15% higher price for SB moves) = $31,788

Total revenue generated after the marketing campaign, $403,588

Finally, let's subtract the cost of the marketing campaign

Profit generated after the marketing campaign: $403,588 - $500 = $403,088

Therefore, the marketing campaign was profitable, generating an additional profit of $31,288.

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ABC ~ PQR. If AB : PQ = 4:5,
find A(ABC): A(PQR). ​

Answers

Area (ABC) is measured as Area (PQR), which equals 16:25.

To locate,

Area (ABC) is measured as: (PQR).

Solution,

This mathematical issue can easily resolved by utilising the procedure outlined below:

According to the "Area of Similar Triangles Theorem" in mathematics,

When two triangles are similar, their area ratios are proportional to the square of the ratio of the respective sides.

{Statement-1}

In light of the query and assertion 1, we can state,

Area (ABC) is measured as: (PQR)

= (AB: PQ), (BC: QR), and (AC: PR)

= (4:5)2 = (4/5)2

= 16/25 = 16:25

As a result, Area (ABC): Area (PQR) is measured at 16:25.

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67% of all americans are home owners. round your answers to four decimal places. if 37 americans are randomly selected, find the probability that

Answers

Answer: Exactly 26 of them are are home owners

Step-by-step explanation:

I need help somebody please ​

Answers

Answer: 54 square in

Step-by-step explanation:

I don't know if this is the same person but I answered this same question just now please check my profile or comment if you want the explanation

What is the domain and range of the function f (x) = a superscript x? a. domain = negative real numbers, range = negative real numbers c. domain = positive real numbers, range = positive real numbers b. domain = all real numbers, range = all real numbers d. domain = real numbers, range = positive real numbers

Answers

The domain and range of the function f(x) =a^x, then option (c)  Domain = positive real numbers, range = positive real numbers.

The function f(x) = a^x is an exponential function with a base of a, where a is a positive real number. The domain of the function is all real numbers, because we can raise a positive number to any real power.

However, since a is positive, a^x will always be positive, which means that the range of the function is also positive real numbers. Therefore, the correct option is c. Domain = positive real numbers, range = positive real numbers.

Therefore, the correct option is (c) Domain = positive real numbers, range = positive real numbers.

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1 Find the value of x.

i’m like struggling

Answers

Answer: 23 degrees

Step-by-step explanation:

Assuming that 117 is the entire angle we can find that:

94+x = 117

Subtract 94 from both sides:

x = 117-94

x = 23 degrees

Answer: 23°

Hope it’s right and it helps lol

Is the relation a function, and what is the range.

Answers

last one is the answer

Step-by-step explanation:

not a function because every input has more than 1 output

Set up iterated integrals for both orders of integration. Then evaluate the double integral using the easier order.
y dA, D is bounded by y = x − 6; x = y2
D

Answers

The value of the double integral using the easier order, ydA bounded by y = x − 6; x = y² is 125/12.

The double integral, indicated by ', is mostly used to calculate the surface area of a two-dimensional figure. By using double integration, we may quickly determine the area of a rectangular region. If we understand simple integration, we can easily tackle double integration difficulties. Hence, first and foremost, we will go over some fundamental integration guidelines.

Given, the double integral ∫∫yA and the region y = x-6 and x = y²

y = x-6

x = y²

y² = y +6

y² - y - 6 = 0

y² - 3y +2y - 6 = 0

(y-3) (y+2) = 0

y = 3 and y = -2

[tex]\int\int\limits_\triangle {y} \, dA\\ \\[/tex]

= [tex]\int\limits^3_2 {y(y+6-y^2)} \, dx \\\\\int\limits^3_2 {(y^2+6y-y^3)} \, dx \\\\(\frac{y^3}{3} + 3y^2-\frac{y^4}{4} )_-_2^3\\\\\frac{63}{4} -\frac{16}{3} \\\\\frac{125}{12}[/tex]

The value for the double integral is 125/12.

Integration is an important aspect of calculus, and there are many different forms of integrations, such as basic integration, double integration, and triple integration. We often utilise integral calculus to determine the area and volume on a very big scale that simple formulae or calculations cannot.

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A certain medicine is given in an amount proportional to a patient's body weight. Suppose a patient weighing 162 pounds requires 216 milligrams of medicine. What is the weight of a patient who requires 220 milligrams of medicine?

Answers

A patient weighing 220 pounds needs 293 milligrams of medicine.

We have given that,

patient weighing 162

pounds requires 216 milligrams of medicine

We have to calculate the amount of medicine required by a patient weighing 220 pounds

Consider the value of amount of medicine is x.

Set up a proportion.

pounds / milligrams of medicine

What is the proportion we get?

[tex]162/216=220/x[/tex]

So,

[tex]162/216=220/x[/tex]

[tex]162x=216\times220[/tex]

[tex]162x=47,520[/tex]

[tex]x=47,520/162[/tex]

[tex]x=293[/tex]

A patient weighing 220 pounds needs 293 milligrams of medicine.

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A rectangle has a perimeter of 48 feet. Which dimensions could the rectangle have? Choose two. A) 6 feet x 8 feet B) 12 feet x 12 feet C) 16 feet x 8 feet D) 12 feet x 4 feet



Note: I am bad at math

Answers

Answer:

Let the length of the rectangle be l and the width be w. Then, according to the problem statement, we have:

Perimeter of rectangle = 2(l + w) = 48 feet

Dividing both sides by 2, we get:

l + w = 24 feet

Now we can check the options:

A) 6 feet x 8 feet: l + w = 6 + 8 = 14 feet, which is not equal to 24 feet. Therefore, this option is not correct.

B) 12 feet x 12 feet: l + w = 12 + 12 = 24 feet, which is equal to the given perimeter. Therefore, this option is correct.

C) 16 feet x 8 feet: l + w = 16 + 8 = 24 feet, which is equal to the given perimeter. Therefore, this option is correct.

D) 12 feet x 4 feet: l + w = 12 + 4 = 16 feet, which is not equal to 24 feet. Therefore, this option is not correct.

So, the correct options are B) 12 feet x 12 feet and C) 16 feet x 8 feet.

The cost price of 20 articles is the same as sellling price of 16 articles find the gain percent

Answers

If the cost price of 20 articles is the same as selling price of 16 articles, then the gain percentage is 25%

To find the gain percent, we first need to calculate the profit earned on the sale of the 16 articles.

Let the cost price of each article be "C" and the selling price of each article be "S".

Given that the cost price of 20 articles is the same as the selling price of 16 articles, we can write:

20C = 16S

We can simplify this equation to:

S = (20/16)C = (5/4)C

Now, let's calculate the profit earned on the sale of 16 articles:

Profit = Total Selling Price - Total Cost Price

Profit = 16S - 20C

Profit = 16(5/4)C - 20C

Profit = 5C/2

The profit earned is 5C/2. The profit percent can be calculated as:

Profit Percent = (Profit / Cost Price) x 100

Profit Percent = (5C/2) / (20C) x 100

Profit Percent = 25%

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A landowner wishes to use 3 miles of fencing to enclose an isosceles triangular region of as large an area as possible. What should be the lengths of the sides of the triangle? Let x be the length of the base of the triangle. Write the area as a function of x. [First write the length of the equal-length sides in terms of the base, x, then write the height of the triangle in terms of the base.] V3 A(x) = 4 x Length of base = 1 miles Length of the other two (equal-length) sides = 2 x miles each

Answers


The area of the triangle, A(x), can be expressed as A(x) = (x * sqrt(3x^2/4))/2 and the height of the triangle, h, can be expressed as h = sqrt(3x^2/4) in terms of the base.

The landowner wishes to use 3 miles of fencing to enclose an isosceles triangular region of as large an area as possible. Let x be the length of the base of the triangle.The length of the base of the triangle is x miles, while the length of the other two equal-length sides are 2x miles each. Thus, the total length of the three sides of the triangle is 3x miles, which equals 3 miles of fencing as required.



To find the area of the triangle, we must first calculate the height of the triangle. Using the Pythagorean Theorem, we can calculate the height of the triangle in terms of the base. The formula is h^2 = (2x)^2 - (x/2)^2. Thus, the height of the triangle, h, can be expressed as h = sqrt(3x^2/4).The area of the triangle is equal to the base multiplied by the height and divided by two. Thus, the area of the triangle, A(x), can be expressed as A(x) = (x * sqrt(3x^2/4))/2.

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Explain what is wrong with the statement. If 0 = f (x) = g(x) and g(x) dx diverges then by the comparison test so f(x)dx diverges. x O If 0

Answers

The statement is incorrect due to the invalid assumption of f(x) = g(x) = 0, and the incorrect application of the comparison test.

The comparison test states that if 0 ≤ f(x) ≤ g(x) and the integral of g(x) dx diverges, then the integral of f(x) dx also diverges. However, the statement assumes that f(x) and g(x) are equal to zero, which means that 0 ≤ f(x) ≤ g(x) is not satisfied.

Additionally, the assumption that g(x) dx diverges does not necessarily imply that f(x) dx also diverges. For example, let g(x) = 1/x^2 and f(x) = 0 for all x. Then g(x) dx diverges, but f(x) dx converges to zero.

In conclusion, the statement is incorrect due to the invalid assumption of f(x) = g(x) = 0, and the incorrect application of the comparison test.

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Given the following data, find the weight that represents the 28th percentile.
Weights of Newborn
Babies
6.1 9.1 9.5 6.0 8.6
6.2 9.1 6.1 8.0 5.7
6.5 6.4 5.8 9.3 6.2

Answers

Therefore, 6.1 pounds are the weight that corresponds to the 28th percentile.

what is percentile ?

In statistics, a percentile is a metric that shows the value below which a specific percentage of observations in a group fell. It is frequently used to evaluate an individual's or a group's performance in relation to a specific metric against a broader population. A dataset's 75th percentile, for instance, is the number below which 75% of the observations fall and above which the remaining 25% of observations fall.

given

These procedures must be taken in order to determine the weight that corresponds to the 28th percentile:

5.7, 5.8, 6.0, 6.1, 6.2, 6.4, 8.0, 8.6, 9.1, 9.1, 9.3, 9.5 are the weights to order in ascending sequence.

Determine the 28th percentile's rank:

28th percentage = 28/100 x 13 = 3.64 (rounded up to 4)

Identify the 6.1-pound weight at the fourth level.

Therefore, 6.1 pounds are the weight that corresponds to the 28th percentile.

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A+9 as a verbal expression

Answers

Answer:

"9 more than A" is a verbal expression.

find the number equivalant to the ratio 25:6

Answers

Answer:

A ratio of 25 to 6 can be written as 25 to 6, 25:6, or 25/6. Furthermore, 25 and 6 can be the quantity or measurement of anything, such as students, fruit, weights, heights, speed and so on. A ratio of 25 to 6 simply means that for every 25 of something, there are 6 of something else, with a total of 31

Step-by-step explanation:

done hope u like it !!

A beverage company delivers three type of drinks which are Milk(M), Carbonateddrinks(C ) and Juice (J) to four stores ( A, B, C, D) for a period of two month. The number of pets of each type of beverage delivered to four stores in first monthis

represented in Matrix K and second month is Matrix L

8 4 3

2 2 2

1 3 1

3 1 3

M C J

A

B

K

C

D

 

  

 

1 3 1

2 7 2

8 3 4

9 2 6

MCJ

A

B

L

CD 

  

 

i. Calculate the total number of pets delivered over the period of 2 months to eachstore. Suppose, the price charged for pet of each type of drink is given by the matrix. 225

195

212

M

C

J

 

 

 

ii. Calculate the cost of each store ( A, B, C, D) on the beverages in two months

Answers

The cost of each store in two months is: Store A is 4281, Store B is 5485, Store C is 3153, and Store D is 6413.

To calculate the total number of pets delivered over the period of 2 months to each store, we need to add the corresponding elements of matrix K and matrix L. The result will be a new matrix representing the total number of pets delivered to each store.

So, we have: Matrix K:

| 8 4 3 |

| 2 1 3 |

| 1 3 2 |

| 7 2 6 |

Matrix L:

| 1 3 2 |

| 8 4 9 |

| 2 6 3 |

| 4 9 2 |

Total pets delivered to each store:

| 9 7 5 |

| 10 5 12 |

| 3 9 5 |

| 11 11 8 |

To calculate the cost of each store in two months, we need to multiply the total number of pets delivered to each store by the price of each type of drink, as given by the matrix:

| 225 195 212 |

So, the cost of each store in two months is:

Store A: (9 × 225) + (7 × 195) + (5 × 212) = 4281

Store B: (10 × 225) + (5 × 195) + (12 × 212) = 5485

Store C: (3 × 225) + (9 × 195) + (5 × 212) = 3153

Store D: (11 × 225) + (11 × 195) + (8 × 212) = 6413

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Y is directly proportional to x if x=20,when y=160,then what is the value of x when y=3. 2

Answers

Answer: 0.4

Step-by-step explanation:

I genuinly cant be asked to explain.

a car is traveling at a 3 of 57 miles per hour. What is the car's speed in miles per minute? how many miles will the car travel in 20 minute? (do not round your answer)​

Answers

The speed of car is found as : 1 of 1140 miles per minutes.

The total number of miles the car will travel in 20 minutes is: 1 / 50 miles.

Explain about the unit conversions?

The same attribute is expressed using a unit conversion, but in a diverse unit of measurement.

For e.g., time can be highlighted in minutes rather than hours, and distance can be verbalized in kilometers, feet, or another comparable measurement unit instead of miles.

Speed of car =  3 of 57 miles per hour.

Speed of car =  3 mi / 57 hr

We know, 1 hour = 60 minutes;

So,

Speed of car =  3 mi / 57*60 min

Speed of car =  1 mi / 57*20 min

Speed of car =  1 mi / 1140 min

Thus, the speed of car is found as : 1 of 1140 miles per minutes.

In 20 minute:

Number of miles = 1 mi / 1140 min * 20 min

Number of miles = 20 / 1140 min

Number of miles = 1 / 50 miles

Thus, the total number of miles the car will travel in 20 minutes is: 1 / 50 miles.

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HELP!!

Write a quadratic equation in standard form that has solutions of -3 and -4.

Answers

Answer:

If a quadratic equation has solutions of -3 and -4, then it can be written in factored form as:

(x + 3)(x + 4) = 0

To convert this to standard form, we can multiply out the factors:

x^2 + 7x + 12 = 0

Therefore, the quadratic equation in standard form that has solutions of -3 and -4 is:

x^2 + 7x + 12 = 0

the pictograph below shows the approximate gross revenues in the united states from four walt disney animated movies. find the ratio of the gross revenue of the hunchback of notre dame to the gross revenue of beauty and the beast. a. 1
b. 2/3
c. 3
d. 2
e. 3/2

Answers

The answer is C. 3.

Solve for x,
using the tangent lines.
13 cm
X
x = [?] cm Remember: a. b = c. d

Answers

The value οf x accοrding tο the circle and the tangent figure is 13 cm.

What is tangent?

A tangent οn any curve is an extended straight line that tοuches οnly a single pοint οf the curve and nοwhere else

Tangent οn a circle is always perpendicular tο the radius οf the circle

Here, we have 2 tangents A (x) and B (13) subtended frοm twο pοints οf the same circle.

The Tangent οn a circle is perpendicular tο the radius thrοugh the pοint οf cοntact and thus the triangle fοrmed in the figure is right-angled.

Sο, frοm a pοint οutside the circle, if 2 tangents are drawn, bοth will have the same length tο the pοint οf cοntact οn the circle.

Here, the twο tangents have the same exteriοr pοint where the tangent initiates. Thus, frοm the abοve theοry, x = 13 cm.

Hence, the length οf the οther tangent tο the circle pοint οf cοntact i.e. x is 13 cm.

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Answer: 13

Step-by-step explanation:

x is congruent to 13

HELPPP
12 divided by five +32 x 2.2

Answers

Answer:

To evaluate this expression, you need to follow the order of operations, which is:

Do any calculations inside parentheses first. (There are no parentheses in this expression.)

Exponents or radicals (There are no exponents or radicals in this expression.)

Multiplication or division, from left to right. (Perform 32 x 2.2, which equals 70.4.)

Addition or subtraction, from left to right. (Perform 12 divided by five, which equals 2.4, then add that to 70.4.)

Therefore, the answer is:

12 ÷ 5 + 32 x 2.2 = 2.4 + 70.4 = 72.8

Help me with this it's to hard for me

Answers

Answer:

Part B: Calculate the range and interquartile range (IQR) for each group and interpret what they tell us about the data.

For Group A:

Range = 5 - 1 = 4

Q1 = 2

Q3 = 4

IQR = Q3 - Q1 = 2

For Group B:

Range = 5 - 2 = 3

Q1 = 2

Q3 = 4

IQR = Q3 - Q1 = 2

The range for Group A is larger than the range for Group B, indicating that there is more variability in the growth of the plants in Group A. However, both groups have the same IQR, indicating that the middle 50% of the data in each group is similar. This suggests that while there may be some variability in the growth of the plants, the overall distribution of growth is similar between the two fertilizers.

suppose that 78% of all dialysis patients will survive for at least 5 years. in a simple random sample of 100 new dialysis patients, what is the probability that the proportion surviving for at least five years will exceed 80%, rounded to 5 decimal places?

Answers

The probability that the 78% of all the dialysis patients survive for at least five years will exceed 80%, rounded to 5 decimal places is 0.3192.

What is the probability?

The proportion of dialysis patients surviving for at least 5 years = 78% = 0.78

Assuming that a simple random sample of 100 dialysis patients is selected, the sample size is n = 100.

Let p be the proportion of dialysis patients in the sample surviving for at least 5 years.

Then, the sample mean is given by:

μp = E(p) = p = 0.78

So, the mean proportion of dialysis patients surviving for at least 5 years is equal to 0.78.

The standard error of the sample proportion is given by:

σp=√p(1−p)/n

σp=√0.78(1−0.78)/100

σp=0.04278

The required probability is to find P(p > 0.80):

P(p > 0.80) = P(Z > (0.80 - 0.78)/0.04278)

P(p > 0.80) = P(Z > 0.467) = 1 - P(Z < 0.467) = 1 - 0.6808 = 0.3192 (rounded to 5 decimal places)

Therefore, the probability that the proportion surviving for at least five years will exceed 80% in a simple random sample of 100 new dialysis patients is 0.3192.

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in how many ways can a class of 40 students select a committee from the class that consists of a president, a vice president, a treasurer and a secretary g

Answers

The total number of ways of selecting the committee is, therefore,40 x 39 x 38 x 37= 7,903,040

A class of 40 students select a committee from the class that consists of a president, a vice president, a treasurer, and a secretary in the following way:Step-by-step explanation:The number of ways that a class of 40 students can choose a committee consisting of a president, vice president, treasurer, and a secretary can be found by using the permutation formula.If we assume that the positions of the committee members are different, the number of ways can be calculated as follows:The number of ways of selecting the president from 40 students is 40.The number of ways of selecting the vice president from the remaining 39 students is 39.The number of ways of selecting the treasurer from the remaining 38 students is 38.The number of ways of selecting the secretary from the remaining 37 students is 37.The total number of ways of selecting the committee is, therefore,40 x 39 x 38 x 37= 7,903,040Thus, secretary.

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The radius of a circle is 8 meters. What is the circle's circumference?
Use 3.14 for л.

Answers

Answer:

circumference=50.24

Step-by-step explanation:

c=2x3.14xr

c=2x3.14x(8)

c=50.24

This is the answer, mark as brainliest

1. Find the given derivative by finding the first few derivatives and observing the pattern that occurs. (d115/dx115(sin(x)). 2. For what values of x does the graph of f have a horizontal tangent? (Use n as your integer variable. Enter your answers as a comma- separated list.) f(x) = x + 2 sin(x).

Answers

The values of x such that the graph of f has a horizontal tangent are;x = 2π/3 + 2πn, 4π/3 + 2πn, where n is an integer.

1. The given derivative can be found by finding the first few derivatives and observing the pattern that occurs as shown below;Differentiating sin x with respect to x gives the derivative cos x. Continuing this process, the pattern that emerges is that sin x changes sign for every odd derivative, and stays the same for every even derivative. Therefore the 115th derivative of sin x can be expressed as follows;(d115/dx115)(sin x) = sin x, for n = 58 (where n is an even number)2. To find the values of x such that the graph of f has a horizontal tangent, we differentiate f with respect to x, and then solve for x such that the derivative equals zero. We have;f(x) = x + 2sin xDifferentiating f(x) with respect to x gives;f'(x) = 1 + 2cos xFor a horizontal tangent, f'(x) = 0, thus;1 + 2cos x = 02cos x = -1cos x = -1/2The solutions of the equation cos x = -1/2 are;x = 2π/3 + 2πn or x = 4π/3 + 2πnwhere n is an integer. Therefore the values of x such that the graph of f has a horizontal tangent are;x = 2π/3 + 2πn, 4π/3 + 2πn, where n is an integer.

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suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.56 and a standard deviation of 0.38 . using the empirical rule, what percentage of the students have grade point averages that are between 1.42 and 3.7 ?

Answers

Using the empirical rule, the percentage of the students have grade point averages that are between 1.42 and 3.7 is 99.7%

How do we use the empirical rule?

The empirical rule states that for a bell-shaped distribution, the percentage of data that lie within a specified number of standard deviations from the mean is as follows: 68% of the data lie within 1 standard deviation of the mean. 95% of the data lie within 2 standard deviations of the mean

99.7% of the data lie within 3 standard deviations of the mean. Mean = 2.56Standard Deviation = 0.38We want to know what percentage of students have a grade point average between 1.42 and 3.7. To do this, we need to convert 1.42 and 3.7 into standard deviations away from the mean.

Using the z-score formula:(1.42-2.56)/0.38 = -2.99 and(3.7-2.56)/0.38 = 3.00This tells us that a grade point average of 1.42 is about 2.99 standard deviations below the mean, and a grade point average of 3.7 is about 3 standard deviations above the mean.

Using the empirical rule, we know that 99.7% of the data lies within 3 standard deviations of the mean. So the percentage of students that have a grade point average between 1.42 and 3.7 is approximately 99.7%.Thus, the correct answer is 99.7%.

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Compute the directional derivative of the following function at the given point Pin the direction of the given vector. Be sure to use a unit vector for the direction vector.f(x,y)=ln(5+3x2+2y2); P(2,−1); ⟨1,1⟩

Answers

The directional derivative of the function at the given point P in the direction of the given vector is:

(8/21)√(2).

Directional derivative

The directional derivative of a function in the direction of a unit vector is the rate at which the function changes in that direction.

To compute the directional derivative of f(x, y) = ln(5 + 3x^2 + 2y^2) at the point P(2, -1) in the direction of the vector ⟨1, 1⟩, we need to:

Compute the gradient of f(x, y) at P(2, -1).Normalize the direction vector ⟨1, 1⟩ to obtain a unit vector.Compute the dot product of the gradient of f at P with the unit direction vector.The gradient of f(x, y) is given by:

1) ∇f(x, y) = (6x / (5 + 3x^2 + 2y^2), 4y / (5 + 3x^2 + 2y^2))

Therefore, the gradient of f at P(2, -1) is:

∇f(2, -1) = (24/21, -4/21)

2) To obtain a unit vector in the direction of ⟨1, 1⟩, we need to divide it by its length:

||⟨1, 1⟩|| = √(1^2 + 1^2) = sqrt(2)

Therefore, a unit vector in the direction of ⟨1, 1⟩ is given by:

u = ⟨1, 1⟩ / √2) = ⟨√(2)/2, √(2)/2⟩

3) The directional derivative of f at P in the direction of u is given by:

D_uf(2, -1) = ∇f(2, -1) · u

where "·" denotes the dot product. Substituting the values for ∇f(2, -1) and u, we get:

D_uf(2, -1) = (24/21, -4/21) · (√(2)/2, √(2)/2)

= (24/21)(√(2)/2) + (-4/21)(√(2)/2)

= (8/21)√(2)

Therefore, the directional derivative of f(x, y) at P(2, -1) in the direction of ⟨1, 1⟩ is (8/21)√(2).

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