a chain letter starts when a person sends it to 7 others. these people either ignore it or send it to 7 more. if 211 are involved in this chain letter (including the sender), (1) how many sent the letter? (2) how many did not continue the chain?

To answer this question, we need to know the driver's reaction time. Let's assume the reaction time is 1.5 seconds, which is a typical average for most drivers.

To find how far the car traveled during the reaction time, we can use the formula:

distance = speed × time

Plugging in the given speed of 72.08 feet per second and the assumed reaction time of 1.5 seconds, we get:

distance = 72.08 ft/s × 1.5 s

distance = 108.12 ft

Therefore, the car traveled 108.12 feet during the driver's reaction time. Rounded to two decimal places, the answer is 108.12.

Answer: 129275775.0

Step-by-step explanation:

129275775.0

whenever there is a whole number, the decimal is at the end of the number.

Based on the above, the proportion of the population who said yes is  78%.

To be able to calculate the population proportion who said yes,  you  have to divide the number of students who said "Yes" by the total amount or number of students in the  whole population:

Hence it will be:

Population proportion who said yes = 741/950

= 0.78

= 78%

So, the proportion of the population who said yes is 0.78 or 78%.

Learn more about Population  from

https://brainly.com/question/29885712

#SPJ1

See text below



At a high school with 950 total students, the true opinions of the entire student body on whether they approve of the student council president are shown below. Follow the directions below to determine a confidence interval for a sample of size 125.

Population Yes 741, Population No 209,  Population Size 950

Population proportion who said yes: ---

Therefore, the missing value of G is 7.608 cm, which is option A.

If G is two and one-half times smaller than 19.02 cm, we can find the value of G by multiplying 19.02 cm by 2/5, since two and one-half is equal to five halves, or 2/5 when expressed as a fraction.

G = (2/5) x 19.02 cm

Simplifying this expression:

G = 7.608 cm

Therefore, the missing value of G is 7.608 cm, which is option A.

Learn more about the missing value of G

brainly.com/question/3759414

#SPJ11

The point (c-2, y) will also be on the graph of f(x) if the point (2+c, y) is on the graph. The correct option is (c-2, y).

If the point (2+c, y) is on the graph of f(x) = x(x-4), we can determine the x-value of the following point on the graph by substituting the given x-value into the function.

1. Start with the given point (2+c, y).

2. Substitute the x-value into the function f(x) = x(x-4):

f(2+c) = (2+c)((2+c)-4)

= (2+c)(c-2)

= c(c-2) + 2(c-2)

= c² - 2c + 2c - 4

= c² - 4

So, the y-value of the point (2+c, y) on the graph of f(x) is y = c² - 4.

Now, let's determine the x-value of the following point on the graph by considering the options provided.

If we select the value (c-2) as the x-value of the following point, we can substitute it into the function f(x) to find the corresponding y-value.

f(c-2) = (c-2)((c-2)-4)

= (c-2)(c-2-4)

= (c-2)(c-6)

= c(c-6) - 2(c-6)

= c² - 6c - 2c + 12

= c² - 8c + 12

So, the y-value of the point (c-2, y) on the graph of f(x) is y = c² - 8c + 12.

To learn more about the function;

brainly.com/question/28303908

#SPJ12

The complete question:
Consider the function f(x)=x(x-4).

If the point (2+c,y) is on the graph of f(x), the following point will also be on the graph of f(x):

Select a Value

(c-2,y)

(2-c,y)

Answer:

To simplify the given expression:

(7/2 x 5/3) + (1/6 x 3/2) - (12/8 x 4/3)

Step 1: Simplify the fractions within the parentheses first.

(35/6) + (1/4) - (48/24)

Step 2: Find a common denominator for all three terms. The least common multiple of 6, 4, and 24 is 24.

(35/6 x 4/4) + (1/4 x 6/6) - (48/24 x 1/1)

Step 3: Simplify the numerators using the common denominator.

(140/24) + (6/24) - (48/24)

Step 4: Combine the like terms.

98/24 or 4 1/6

Therefore, the simplified form of the expression is 4 1/6.

The dimensions of the rectangular pen that maximize the area are a shorter side of 100 ft and a longer side of 200 ft along the river.

To maximize the area of the rectangular pen using 400 ft of fencing, with a river on one side of the property, we need to determine the optimal dimensions. Let's denote the length of the pen along the river as 'x' and the width perpendicular to the river as 'y'.

Since the river is on one side, we only need to use the fencing for the other three sides. The total fencing length is 400 ft, so the equation representing the fencing is:

x + 2y = 400

We need to find the maximum area of the pen, which is given by the product of its length and width, i.e., A = xy.

First, we need to express 'x' in terms of 'y' using the fencing equation. From the equation, we get:

x = 400 - 2y

Now, substitute this expression for 'x' in the area equation:

A(y) = (400 - 2y)y = 400y - 2y²

To find the maximum area, we need to find the critical points of this equation by taking the derivative with respect to 'y' and setting it to zero:

dA/dy = 400 - 4y = 0

Solve for 'y':

4y = 400
y = 100 ft

Now, find 'x' using the expression we derived earlier:

x = 400 - 2y
x = 400 - 2(100)
x = 400 - 200
x = 200 ft

Know more about area here:

https://brainly.com/question/24129362

#SPJ11

Hunter made a mistake in calculating the volume of the rectangular prism, hence he may have chosen the wrong formula.

The volume of a rectangular prism, with dimensions length, width and height, is given by the multiplication of these dimensions, according to the equation presented as follows:

Volume = length x width x height.

The dimensions for this problem are given as follows:

2m, 3m and 5m.

Hence the volume of the prism is given as follows:

V = 2 x 3 x 5

V = 30 m³.

More can be learned about the volume of a rectangular prism at brainly.com/question/22070273

#SPJ1

The slope of desired parallel line is undefined.

Given two points [tex](-4, 3)[/tex] and [tex](-4, 7)[/tex], we can see that both points have the same x-coordinate, which means that they lie on a vertical line parallel to the y-axis. Since the slope of a vertical line parallel to the y-axis is undefined, we can say that the slope of line m is undefined.

To find the slope of a line that is parallel to line m, we can use the fact that parallel lines have the same slope. Since the slope of line m is undefined, any line parallel to it will also have an undefined slope.

Therefore, the slope of the line that is parallel to line m is undefined.

Learn more about slope at:

brainly.com/question/29184253

#SPJ11

Answer:

x=85

y=27

;)

Step-by-step explanation:

x+y=112

y=x-58

add 58 to the other side

58+y=x

Subtract y

x-y=58

x+y=112

Now if we add these we get

2x=170

x=85

Then if we substitute 85 in x+y=112

85+y=112

112

-85

____

27

Check your Answer on

y=x-58

27=85-58

27=27

This is the Answer

Please DM me if I should reexplain THANK YOU!

Hope this helps!

The solution of the inequality 4x-1 grater then -5 is x > -1

From the question, we have the following parameters that can be used in our computation:

4x-1 grater then -5

Express properly

so, we have the following representation

4x - 1 > -5

Add 1 to both sides of the inequality

so, we have the following representation

4x > -4

Divide both sides by 4

x > -1

Hence, the solution of the inequality is x > -1

Read more about inequality at

https://brainly.com/question/25275758

#SPJ1

An American in the middle 70% of cheese consumption consumes per year between 23.252 and 41.348 lbs of cheese.

To find the amount of cheese consumed by an American in the middle 70%, we need to find the range of values that contain the middle 70% of the distribution.

First, we need to find the z-scores corresponding to the lower and upper boundaries of the middle 70% of the distribution. We can use the standard normal distribution for this, by converting the raw score of 32.3 lbs to a z-score:

z = (x - μ) / σ = (32.3 - 32.3) / 8.7 = 0

The z-score for the mean is zero, which means the mean is the midpoint of the normal distribution.

Next, we need to find the z-scores that correspond to the lower and upper boundaries of the middle 70% of the distribution. We can use the standard normal distribution table or calculator to find the z-scores. For a middle 70% range, the z-scores are approximately -1.04 and 1.04.

Finally, we can use the z-scores and the formula z = (x - μ) / σ to find the corresponding values of x, which represent the range of cheese consumption that contains the middle 70% of the distribution:

Lower boundary: z = -1.04

-1.04 = (x - 32.3) / 8.7

x - 32.3 = -9.048

x = 23.252 lbs

Upper boundary: z = 1.04

1.04 = (x - 32.3) / 8.7

x - 32.3 = 9.048

x = 41.348 lbs

Learn more about normal distribution at https://brainly.com/question/29509087

#SPJ11

Both vertical angles measure 90 degrees, and the adjacent angles each measure 90 degrees as well.
When two lines intersect at a point, we can use the properties of vertical and adjacent angles to set up and solve equations relating to their measures. This can help us find missing angles or verify that two angles are congruent.

When two lines intersect at a point, they form two angles. These angles are called vertical angles, and they are always congruent. In addition, the two lines also form two pairs of adjacent angles, each pair of which adds up to 180 degrees.

Let's consider an example to understand this concept better. Suppose we have two lines AB and CD that intersect at point P. If angle APD measures x degrees, then angle BPC also measures x degrees because they are vertical angles. Similarly, angle APB and angle CPD are adjacent angles, and their sum is 180 degrees. If angle APB measures y degrees, then angle CPD also measures y degrees.

Therefore, we can set up the following equation:

x + y = 180

This equation relates the measures of the adjacent angles formed by the two lines. We can solve for one variable in terms of the other by rearranging the equation:

y = 180 - x

This equation gives us the measure of one angle in terms of the measure of the other. We can substitute this expression into the equation for the vertical angles to get:

2x = 180

Solving for x, we find that x = 90.

You can learn more about vertical angles at: brainly.com/question/24460838

#SPJ11

In this prism, lateral Area =  858.54 m² and surface area = 890.54 m².

Firstly, we will find the lateral area of the prism by applying the formula:

Lateral  area = perimeter × height

Perimeter = sum of all the sides of prism

= 4 + 8 + 8.94  = 20.94 m

Lateral Area = 20.94 * 41  =  858.54 m²

Now, we have to find the surface area of the prism.

Surface area = Lateral Area + 2 × ( Base Area)

Base Area = the area of a triangle with sides 4, 8, and 8.94.

Now, we will calculate the area of the triangle

Firstly, we will find s for calculating the area of triangle and then apply the formula.

s = ( 4 + 8 + 8.94)/2 = 10.47 m

Area of triangle =  [tex]\sqrt{ (10.47 (10.47 - 4)(10.47 - 8)(10.47 - 8.94))}[/tex]

= [tex]\sqrt{(10.47 (6.47)(2.47)(1.53))}[/tex]

= 16 m²

To know more about lateral area:

https://brainly.com/question/29007884

#SPJ4

Correct question:

Use formulas to find the lateral area and surface area of the given prism. Round your answer to the nearest whole number. The figure is not drawn to scale. The bases are right triangles.

As y varies inversely as x, the value of y when x = 3 is 45.

Inverse proportionality is expressed as:

y ∝ 1/x

Hence:

y = k/x

Where k is the constant of proportionality.

First, we determine the constant of proportionality.

Using the information given in the problem.

When x = 5, y = 27

Substituting these values into the formula, we get:

y = k/x

27 = k/5

k = 135

Now that we have found the value of k, we can use the formula to find y when x = 3. Substituting x = 3 and k = 135, we get:

y = k/x

y = 135/3

y = 45

Therefore, the value of y is 45.

Learn more about proportionality here: https://brainly.com/question/27530069

#SPJ1

You will run out of iced tea in 5.33 days.

To calculate this, we need to first determine how much tea you drink each day:

1.75 cups in the morning + 1.5 cups in the evening = 3.25 cups per day.

Then, we can divide the total amount of tea by the amount you drink per day to find out how many days the tea will last:

13 cups ÷ 3.25 cups per day ≈ 4 days.

However, we need to account for the fact that you won't run out of tea at the end of the day, so we need to round up to the nearest day:

ceil(4 days) = 5 days.

Finally, we need to account for the partial day on the fifth day, which we can calculate by finding how much tea you drink in the morning before running out:

1.75 cups in the morning - (5 days x 3.25 cups per day) = 0.5 cups.

So, you will run out of iced tea on the fifth day in the evening, after drinking 1.5 cups. Therefore, you will run out of iced tea in 5.33 days.

To know more about iced tea, refer here:

https://brainly.com/question/28531302#

#SPJ11

Answer: Regarding "Car Mr V Model 2017," I'm not sure what you're asking. Can you please provide more context or a clear question?

Step-by-step explanation:

To determine if Eugene's thinking is correct, we need to calculate his new monthly salary with the 3.5% raise.

3.5% of $2,700 is (3.5/100) x $2,700 = $94.50

Eugene's new monthly salary is $2,700 + $94.50 = $2,794.50

So, Eugene's thinking is not correct. His new monthly salary with the 3.5% raise is $2,794.50, which is still less than $2,800.

Today's lesson was not provided in your question. Please provide a topic or question for me to provide a summary of today's lesson.

Regarding "Car Mr V Model 2017," I'm not sure what you're asking. Can you please provide more context or a clear question?

To Know more about Car Mr V Model 2017 refer here

https://brainly.com/question/17549932#

#SPJ11

The prediction that is not supported by the data is option B: "The number of non-fiction books sold on Friday will be two-and-a-half times the number of arts and crafts books sold on Friday."

We can see from the table that on Thursday, 7 sports and trivia books and 19 arts and crafts books were sold, for a difference of 12.

On Thursday, 13 non-fiction books and 19 arts and crafts books were sold. If we assume that the same ratio will hold on Friday, then we can predict that the number of non-fiction books sold will be (19/2)*2.5 = 23.75, which is not a whole number. Therefore, this prediction is not supported by the data.

Learn more about data on

https://brainly.com/question/26711803

#SPJ1

The function represented by the data is f(1/4)x³ + 2x² - 24. The correct option is 2.

In the given table, we have the values of x and f(x) for x=0,1,2,3, and 4. We need to find a polynomial function that satisfies these data points.

Looking at the table, we can see that f(x) is negative for x=0,1,2 and positive for x=3,4. This suggests that the polynomial has a root or a zero between x=2 and x=3.

To find the degree of the polynomial, we count the number of data points given. Since we have 5 data points, we need a polynomial of degree 4.

We can use interpolation to find the coefficients of the polynomial. One way to do this is to set up a system of equations using the data points:

f(0) = -24 = a(0)⁴ + b(0)³ + c(0)² + d(0) + e

f(1) = -21.75 = a(1)⁴ + b(1)³ + c(1)² + d(1) + e

f(2) = -14 = a(2)⁴ + b(2)³ + c(2)² + d(2) + e

f(3) = 0.75 = a(3)⁴ + b(3)³ + c(3)² + d(3) + e

f(4) = 24 = a(4)⁴ + b(4)³ + c(4)² + d(4) + e

Solving this system of equations gives us the polynomial function:

f(x) = -0.25x⁴ + 2x³ - 2.75x² - 0.5x + 24

Therefore, the correct option is 2. f(x) = (1/4)x³ + 2x² - 24.

Learn more about polynomials function at https://brainly.com/question/9482448

#SPJ11

The surface integral of the dot product between the vector field F = 3i + 3j + 4k and the unit normal vector of the surface S is equal to zero.

To use Stokes' theorem to find the flux of the vector field F = 3i + 3j + 4k across the surface S, which is the part of the plane 3x + 2y + z = 1 in the first octant and oriented upward.

Stoke's theorem statement is “the surface integral of the curl of a function over the surface bounded by a closed surface will be equal to the line integral of the particular vector function around it.” Stokes theorem gives a relation between line integrals and surface integrals.

First, we need to parametirize the curve C that bounds the surface S. Since S is in the first octant, x, y, and z are all non-negative.

The boundary C consists of three line segments: (i) from (0, 0, 0) to (1/3, 0, 0), (ii) from (1/3, 0, 0) to (0, 1/2, 0), and (iii) from (0, 1/2, 0) to (0, 0, 0). Next, calculate the curl of F, which is the cross product of the del operator and F:
curl(F) = (∂Fz/∂y - ∂Fy/∂z)i - (∂Fx/∂z - ∂Fz/∂x)j + (∂Fy/∂x - ∂Fx/∂y)k = (0 - 0)i - (0 - 0)j + (0 - 0)k = 0.

Since curl(F) = 0, the line integral of F over C is also 0.

According to Stokes' theorem, the flux of F across S equals the line integral of F over C, which we found to be 0.

Therefore, the flux of the vector field F = 3i + 3j + 4k across the surface S is 0.

Learn More About Stoke's Theoram: https://brainly.com/question/17256782

#SPJ11

Using FOIL, the simplified expression for the product of (3x-4)(6x-2) is c. 18x² - 30x + 8.

To simplify the product (3x-4)(6x-2) using FOIL, we follow the First, Outer, Inner, Last rule. Let's break down the process:

First: Multiply the first terms of both expressions:
(3x) * (6x) = 18x²

Outer: Multiply the outer terms of both expressions:
(3x) * (-2) = -6x

Inner: Multiply the inner terms of both expressions:
(-4) * (6x) = -24x

Last: Multiply the last terms of both expressions:
(-4) * (-2) = 8

Now, combine the results:
18x² - 6x - 24x + 8

Simplify by combining the like terms (middle terms -6x and -24x):
18x² - 30x + 8

The simplified product is 18x² - 30x + 8, which corresponds to option (c).

Learn more about FOIL here: https://brainly.com/question/25558606

#SPJ11

Using one cigarette packet per day with the cost of $ 5.50 tax revenue would be raised from John's cigarette purchases is $9,636.

Tax revenue is the income received by the government from the taxation of individuals, businesses, and other entities.

Taxes are mandatory payments imposed on income, goods and services, property, and other items, which are collected by the government to finance public goods and services such as infrastructure, education, healthcare, and defense.  

To solve the given problem, assume the cost of a cigarette packet and find the total revenue that can be generated.

Here we have

There was a 10 percent tax on every pack of cigarettes John bought between the age of 22 and age 70

To calculate the tax revenue raised from John's cigarette purchases between ages 22 and age 70, we need to know how many packs of cigarettes he bought during that period.

Let's assume that John bought an average of one pack of cigarettes per day or 365 packs per year.

The difference Between the ages of 22 and age 70 = 70 - 22 = 48 years

Hence, John would have bought cigarettes for 48 years, so the total number of packs he bought would be:

365 packs/year x 48 years = 17,520 packs

If there were a 10% tax on each pack, the tax revenue would be:

0.10 x $5.50 (average cost of a pack of cigarettes in the US)

= $0.55 tax per pack

$0.55 tax per pack x 17,520 packs = $9,636 in tax revenue

This is an estimate, as it does not take into account any variations in the price of cigarettes over time or across different regions.

As for how much tax money could be used to reduce smoking rates, there are several options.

One possibility is to invest the revenue in smoking cessation programs and public health campaigns to educate people about the risks of smoking and help them quit.

The money could also be used to fund research into developing new treatments for tobacco addiction or to support medical research into the health effects of smoking.

Therefore  

Using one cigarette packet per day with the cost of $ 5.50 tax revenue would be raised from John's cigarette purchases is $9,636.

Learn more about Tax revenue at

https://brainly.com/question/27983494

#SPJ9

The discrepancy in the results: The theoretical probability may not be calculated correctly and enough trials have not been performed to give the desired result

In the given scenario, 81% of money spent at full-service restaurants in America is through debit, credit, or pre-paid cards. However, one restaurant found that 421 out of 973 customers used these payment methods. Possible reasons for the discrepancy in the results are:

1. The theoretical probability may not be calculated correctly: The 81% figure might not accurately represent the actual proportion of customers using cards in full-service restaurants. It could be due to incorrect data collection or interpretation.

3. Enough trials have not been performed to give the desired result: The data from one restaurant for one week might not be enough to accurately reflect the overall trend. A larger sample size and longer time frame would give a more accurate representation.

It's important to note that there might not necessarily be a discrepancy in the result; it could be a difference due to variations in individual restaurant data compared to the overall average.

To know more about theoretical probability, refer here:

https://brainly.com/question/24037367#

#SPJ11

The volume of the largest right cylinder that fits in a sphere of radius 4 is 128π cubic units.

To find the volume, we need to understand that the cylinder that fits inside a sphere will have its height (h) equal to the diameter of the sphere (2r), and the cylinder's radius (r') will also be equal to the sphere's radius (r).

We can use the formula for the volume of a cylinder: V = π[tex]r^2^h[/tex], where π is pi (approximately 3.14), r is the radius, and h is the height.

Since the cylinder's height is equal to the sphere's diameter, which is 2r, the height of the cylinder is 2r. Therefore, we can write the volume of the cylinder as:

V = πr²(2r)

Simplifying this expression, we get:

V = 2π[tex]r^3[/tex]

To find the maximum volume of the cylinder that fits inside a sphere of radius 4, we need to maximize the volume by finding the maximum value of r. Since the radius of the cylinder is equal to the radius of the sphere, we have:

r = 4

Substituting this value into the formula for the volume of the cylinder, we get:

V = 2π[tex](4)^3[/tex]

V = 128π

Therefore, the volume of the largest right cylinder that fits in a sphere of radius 4 is 128π cubic units.

Learn more about volume

brainly.com/question/31606882

#SPJ11

Sarah wants to attend a private college with a yearly tuition of $31,000. Room and board costs are estimated to be $12,000 per year, and the cost of books and supplies is estimated to be $2,000. To calculate the total cost of her four-year degree, follow these steps:

1. Add the yearly costs together: $31,000 (tuition) + $12,000 (room and board) + $2,000 (books and supplies) = $45,000 per year.
2. Multiply the yearly cost by the number of years in the degree program: $45,000 * 4 = $180,000.

Assuming she receives no financial aid, it will cost Sarah $180,000 to get a four-year degree from this private college.

To know more about total cost refer here

https://brainly.com/question/21662065#

#SPJ11

According to the given standard deviation, the engineer would need a sample size of at least 75 wires to estimate the mean length to within 0.025 feet with 99% confidence.

To estimate the mean length of the wires being cut, the engineer needs to determine the sample size needed to achieve a certain level of confidence and level of precision. In this case, the engineer wants to estimate the mean length to within 0.025 feet with 99% confidence. This means that there is a 99% chance that the true population mean falls within the estimated range.

To determine the sample size needed, the engineer can use a formula that takes into account the desired level of confidence, level of precision, and the standard deviation of the population. The formula is:

n = (z² x s²) / E²

Where:

n = sample size needed

z = z-score for desired level of confidence (99% = 2.58)

s = standard deviation of the population (0.15 feet)

E = level of precision (0.025 feet)

Plugging in the values, we get:

n = (2.58² x 0.15²) / 0.025²

n = 74.83 ≈ 75

To know more about standard deviation here

https://brainly.com/question/16555520

#SPJ4

The volume of the given cylinder is 84.78 cubic yards.

The first step to finding the volume of a cylinder is to use the formula V = πr^2h, where r is the radius of the cylinder (which is half of the diameter). So, to find the radius, we divide the diameter (which is 3 yards) by 2, giving us a radius of 1.5 yards. Then, we can plug in the values for radius (1.5), height (12), and π (3.14) into the formula to find the volume:

V = πr^2h
V = 3.14 x 1.5^2 x 12
V = 84.78 cubic yards

Therefore, the volume of the cylinder is 84.78 cubic yards.
Hi! To find the volume of a cylinder with a diameter of 3 yards and a height of 12 yards, the first step is to find the radius.

Step 1: Since the diameter is 3 yards, you can find the radius by dividing the diameter by 2. Radius = Diameter / 2. So, the radius is 1.5 yards.

Step 2: Now, you can find the volume of the cylinder using the formula: Volume = π × (radius^2) × height. In this case, Volume = π × (1.5^2) × 12.

Step 3: Calculate the volume: Volume = π × 2.25 × 12. Using the value of π as approximately 3.14, the volume becomes 3.14 × 2.25 × 12.

Step 4: Multiply the numbers: Volume ≈ 84.78 cubic yards.

So, the volume of the cylinder is approximately 84.78 cubic yards.

To learn more about Volume of cylinder

https://brainly.com/question/21987567

#SPJ11

Answer:

3/2

Step-by-step explanation:

f(x) = 2x+5

f-¹(x) = ?

to find f-¹(x)

let f(x) be y

y = 2x+5

then we'll make x the subject of formula

y-5 = 2x

x = y-5/2

change y to x and x to y

f-¹(x) = x-5/2

f-¹(8) = 8-5/2 = 3/2

Answer:

h = 3/2

Step-by-step explanation:

Volume of cone formula: V = 1/3 π r²h

We are given volume and the radius so we can plug in those values

1/18π = 1/3 π (1/3)²h

1/18π = 1/3 π 1/9 h

Multiply the fractions on the right side:

1/18π = 1/27πh

Multiply both sides by reciprocal of 1/27 (which is 27)

3/2π = πh

Divide both sides by π

h = 3/2

Hope this helps!

Therefore, the exact values of sin 2u, cos 2u, and tan 2u are -24/25, 7/25, and -24/7, respectively.

The double angle formulas are:

sin 2u = 2 sin u cos u

cos 2u = cos² u - sin² u

tan 2u = 2 tan u / (1 - tan² u)

Given that cos u = -4/5 and u is between -π/2 and π, we can find sin u by using the Pythagorean identity:

sin² u + cos² u = 1

sin u = sqrt(1 - cos² u) = sqrt(1 - 16/25) = 3/5 (since u is in the second quadrant)

Using this value of sin u, we can find:

sin 2u = 2 sin u cos u = 2 (3/5) (-4/5) = -24/25

cos 2u = cos² u - sin² u = (-4/5)² - (3/5)² = 7/25

tan 2u = 2 tan u / (1 - tan² u) = 2 (-3/4) / (1 - (-3/4)²) = -24/7

For more similar questions on topic maximization

https://brainly.com/question/29502088

#SPJ11

For the function, M(x) = 2x⁴ - 5x-3

1. M'''(2) = 96
2. dy/dx = (2x + 9x²y⁴) / (12x³y³ + 12y²)
3. dy/dt = -12,320 when dx/dt = -2 and x = -10

1. To find the value of M'''(2) for the function M(x) = 2x⁴ - 5x - 3, first find the first, second, and third derivatives:

M'(x) = 8x³ - 5
M''(x) = 24x²
M'''(x) = 48x

Now evaluate M'''(2):
M'''(2) = 48(2) = 96

2. To find dy/dx for the relation x² = -3x³y⁴ - 4y³, first implicitly differentiate both sides with respect to x:

2x = -3(3x²y⁴ + x³(4y³dy/dx)) - 4(3y²dy/dx)

Now solve for dy/dx:

dy/dx = (2x + 9x²y⁴) / (12x³y³ + 12y²)

3. To find dy/dt for the function y = 3x⁴ - 8x² + 4, first differentiate with respect to t:

dy/dt = (12x³ - 16x)(dx/dt)

Now evaluate dy/dt when dx/dt = -2 and x = -10:

dy/dt = (12(-10)³ - 16(-10))(-2) = (12,000 + 160)(-2) = -12,320

For more such questions on Function.

https://brainly.com/question/22981287#

#SPJ11