The base and all three faces of a triangle pyramid are equilateral triangles with side lengths of 3ft. the height of each triangle is 2.6ft. what are the lateral area and the total surface area of the triangular pyramid?

The image of  WXYZ moves two unit to the right and 5 unit down. The coordinate is (x+2, y-5).

The polar system of coordinates is a coordinate system with two dimensions in which the location of each point can be determined by its distance from the origin, a fixed point, and its angle from the polar axis, also known as the polar axis of rotation. A ray beginning at the origin and extending outward at a set angle, typically 0 degrees or horizontal, is how the polar axis is typically depicted. The image of  WXYZ moves two unit to the right and 5 unit down. The coordinate is (x+2, y-5).

To know more about coordinate, here:

https://brainly.com/question/16634867

#SPJ1

a.The velocity function is: v = ds/dt = (2/5)t^(5/2) - 6t^(1/2) + 16.

b. The position function is: s = (4/35)t^(7/2) - 8t^(3/2) + 16t - 12.

a. To find the velocity, we need to integrate the acceleration function. We get:

v = ds/dt = ∫a dt = ∫(15√t - 3/t^(1/2)) dt

Integrating the first term, we get (2/5)t^(5/2), and integrating the second term, we get -6t^(1/2) + C. Thus, the velocity function is:

v = ds/dt = (2/5)t^(5/2) - 6t^(1/2) + C

We can find the constant C using the initial condition that ds/dt = 4 when t = 1. Substituting these values into the equation, we get:

4 = (2/5)(1)^(5/2) - 6(1)^(1/2) + C

C = 4 + 12 = 16

Therefore, the velocity function is:

v = ds/dt = (2/5)t^(5/2) - 6t^(1/2) + 16

b. To find the position function, we need to integrate the velocity function. We get:

s = ∫v dt = ∫((2/5)t^(5/2) - 6t^(1/2) + 16) dt

Integrating the first term, we get (4/35)t^(7/2), integrating the second term, we get -8t^(3/2), and integrating the third term, we get 16t. Thus, the position function is:

s = ∫v dt = (4/35)t^(7/2) - 8t^(3/2) + 16t + C2

We can find the constant C2 using the initial condition that s = 0 when t = 1. Substituting these values into the equation, we get:

0 = (4/35)(1)^(7/2) - 8(1)^(3/2) + 16(1) + C2

C2 = -12

Therefore, the position function is:

s = (4/35)t^(7/2) - 8t^(3/2) + 16t - 12

To learn more about velocity function visit:https://brainly.com/question/28939258

#SPJ11

There is a 95.52% chance that there are no customers in the system, a 9.93% chance that a customer has to wait in line, and a 31.20% chance that the server is busy.

λ = 2.6  guests per hour( Poisson  appearance rate)  μ =  1/ 12 hours per  client( exponential service rate)  c =  1 garçon( design adviser )  Using Little's Law, we can find the average number of  guests in the  staying line   L =  λ * W  

where W is the average time a  client spends in the system(  staying and being served). To find W, we can use the formula  

W =  1/( μ- λ)   Using these formulas, we get  

W =  1/(1/12-2.6) = 0.1154

hours = 6.92  twinkles

L = 2.6 *0.1154 = 0.3000  guests

 So on average, there will be0.3  guests  staying in line and each  client will  stay for6.92  twinkles before being served.

 We can also  cipher the probability that there are no  guests in the system(P_0), the probability that a  client has to  stay(P_w), and the probability that the garçon is busy

(P_b)   =  1- λ/ μ

= 0.9552  

 λ/ μ2 *( 1/( 1- λ/ μ)) = 0.0993  =  λ/ μ = 0.3120

Learn more about queing theroy/ customers at

https://brainly.com/question/24196990

#SPJ4

Div(f) = 2cos(x) + [tex]5e^y[/tex], and curl(f) = < 0, 9sin(x), 5e^y >.

To calculate div(f) and curl(f), we need to express f as a vector field:

f = < 2 sin(x), [tex]5e^y[/tex][tex]5e^y[/tex], 9 cos(x) >

Then, we can use the formulas for divergence and curl:

div(f) = ∂f₁/∂x + ∂f₂/∂y + ∂f₃/∂z

curl(f) = < ∂f₃/∂y - ∂f₂/∂z, ∂f₁/∂z - ∂f₃/∂x, ∂f₂/∂x - ∂f₁/∂y >

Let's compute these step by step:

div(f) = ∂f₁/∂x + ∂f₂/∂y + ∂f₃/∂z

= 2cos(x) + [tex]5e^y[/tex] + 0

= 2cos(x) + [tex]5e^y[/tex]

curl(f) = < ∂f₃/∂y - ∂f₂/∂z, ∂f₁/∂z - ∂f₃/∂x, ∂f₂/∂x - ∂f₁/∂y >

= < 0 - 0, 0 - (-9sin(x)), 5e^y - 0 >

= < 0, 9sin(x), 5e^y >

Therefore, div(f) = [tex]2cos(x) + 5e^y[/tex], and curl(f) = [tex]< 0, 9sin(x), 5e^y > .[/tex]

Learn more about Div(f)

https://brainly.com/question/29997133

#SPJ4

Answer: B

Step-by-step explanation:

First, let's convert the 5 pints of fruit punch to cups:

5 pints = 5 x 2 cups/pint = 10 cups

Now we can add up the cups of each ingredient:

6 cups of orange juice + 10 cups of fruit punch + 8 cups of apple juice = 24 cups

Since there are 4 cups in a quart, we can divide by 4 to get the number of quarts:

24 cups ÷ 4 cups/quart = 6 quarts

Therefore, Jackson makes 6 quarts of fruit punch.

The length of one side of the square is x - 6 units

The formula for calculating the area of a square is expressed as;

A = a²

Such that the a is the length of its side

From the information given, we have that;

Area = x^ 2 − 12 x + 36

solve the quadratic expression, we have that;

x² - 6x - 6x + 36

group in pairs

(x²- 6x) - (6x + 36)

factorize the terms

x(x - 6) - 8(x - 6)

Then, we have;

(x - 6) and (x - 6) units

Learn about squares at: https://brainly.com/question/25092270

#SPJ1

62% of the dancers did not get into the show.

To find the percentage of dancers who did not get into the show.

First, identify the total number of dancers auditioning and the number of dancers who did not get into the show.

In this case, there are 150 dancers in total, and 93 of them did not get in.
Next, divide the number of dancers who did not get into the show by the total number of dancers auditioning.

This will give us the proportion of dancers who did not get in.
  Proportion = (Number of dancers who did not get in) / (Total number of dancers)
  Proportion = 93 / 150
Finally, to find the percentage, multiply the proportion by 100:
  Percentage = Proportion * 100
  Percentage = (93 / 150) * 100.

For similar question on dancers.

https://brainly.com/question/28183590

#SPJ11

a) The experimental probability of rolling an even number is given as follows: 12/25.

b) The theoretical probability of rolling an even number is given as follows: 1/2.

c) With a large number of trials, there might be a difference between the experimental and the theoretical probabilities, but the difference should be small.

A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.

The number of trials in which an even number is rolled is given as follows:

88 + 69 + 83 = 240.

Hence the experimental probability is given as follows:

240/500 = 12/25.

For each roll, 3 out of 6 numbers are even, hence the theoretical probability is given as follows:

p = 3/6

p = 1/2.

More can be learned about probability at https://brainly.com/question/24756209

#SPJ1

The statement mentions that the kitchen sink has a capacity of 108.460 L of water and it is important to round up the amount to the nearest liter. When we round up the capacity of the sink, it comes out to be 108 liters. This means that the sink can hold up to 108 liters of water at maximum capacity.

It is important to have an idea of the sink’s capacity in terms of liters because it helps in managing the amount of water used while washing dishes or other household items. It is also beneficial to know the capacity of the sink while filling it with water for cleaning purposes, as it prevents the sink from overflowing.

Overall, the capacity of a sink is an important factor to consider while designing a kitchen or bathroom as it ensures proper functionality and prevents any damage to the surrounding areas due to overflowing water. So, it is always advisable to check the capacity of a sink before installing it in a household.

To know more about capacity click here

brainly.com/question/29033783

#SPJ11

Complete Question  :  Mirrors kitchen sink holds up to 108.460 L of water. Round this amount to the nearest liter.

The fractions, decimals, and percent equivalencies that are correct are:

b. 3/8 = 0.375 = 37.5%

c. 24% = 0.24 = 6/25

e.  24/30 = 80% = 0.8

A fraction is a part of a whole.

The number is represented mathematically as a quotient, where the numerator and denominator are split.

In a simple fraction both the numerator and denominator are integers.

In a complex fraction, a fraction appears in the numerator or denominator.

In a proper fraction, the numerator is less than the denominator.

A decimal is a fraction that contains a decimal point.

A percentage is a value out of 100 parts.

Learn more  about fractions and decimals at: https://brainly.com/question/29404890

#SPJ1

We can be 95% confident that the true average monthly salary earned by all employees of People Plus Pty is between R16 234.49 and R20 765.51. This means if created for several samples of the same size taken from the population, would contain the actual population mean.

To construct a 95% confidence interval for the true average monthly salary earned by all employees of People Plus Pty, we can use the following formula:

CI = x ± t(α/2, n-1) * (s/√n)

where:

x = sample mean = R18 500

s = sample standard deviation = R1 750

n = sample size = 19

t(α/2, n-1) = t-score at α/2 and n-1 degrees of freedom

Using a t-table or calculator with 18 degrees of freedom (n-1), we can find the t-score at α/2 = 0.025 to be 2.101.

Plugging in the values, we get:

CI = 18500 ± 2.101 * (1750/√19)

= (16234.49, 20765.51)

Therefore, we can be 95% confident that the true average monthly salary earned by all employees of People Plus Pty is between R16 234.49 and R20 765.51.

This means that if we were to take multiple samples of the same size from the population and construct 95% confidence intervals for each sample mean, about 95% of those intervals would contain the true population mean.

Learn more about confidence interval at https://brainly.com/question/18915814

#SPJ11

The first derivative of f(x) is f'(x) = -12(-2x + 1)2.  The second derivative is f''(x) =48(-2x + 1), and all higher derivatives have the form f^(n)(x) = (-1)n * 6 * n! * (-2x + 1)^(3-n).

To calculate the derivatives of all orders for f(x) = (-2x + 1)3, we first need to find the first derivative:

f(x) = (-2x + 1)³

f'(x) = 3(-2x + 1)²(-2)
f'(x) = 3(-2x + 1)²(-2)

f'(x) = -12(-2x + 1)2

Next, we find the second derivative:

f''(x) = d/dx(-12(-2x + 1)²)

f''(x) = 2(-2)(-12)(-2x + 1)
f''(x) = -12[2(-2x + 1)(-2)]

f''(x)= 48(-2x + 1)

We can continue this process to find the third and fourth derivatives:

f'''(x) = d/dx(96(-2x + 1))

f'''(x) = -384

f''''(x) = d/dx(-384)

f''''(x) = 0
Notice that the fourth derivative is 0, meaning that all higher derivatives will also be 0.

This is because the original function is a polynomial of degree 3, so its fourth derivative will be the derivative of a constant, which is 0.

Therefore, we can conclude that:

f(4)(x) = 0
f(n)(x) = 0 for all n ≥ 4.

To practice more questions about derivatives:

https://brainly.com/question/23819325

#SPJ11

The outcome with a frequency closest to its expected frequency is C (3).

In a spinner game where the pointer spins on a wheel with six equal-sized sections, the expected frequency of each section is 1/6 or 16.67%. Based on the given spinner, section A has an expected frequency of 1/6, section B has an expected frequency of 4/6, section C has an expected frequency of 4/6, section D has an expected frequency of 1/6, section E has an expected frequency of 2/6, and section F has an expected frequency of 4/6.

To determine the outcome with a frequency closest to its expected frequency, we need to compare the expected frequency to the actual frequency for each section.

Based on the given spinner, section A has an actual frequency of 1/18, section B has an actual frequency of 4/18, section C has an actual frequency of 4/18, section D has an actual frequency of 1/18, section E has an actual frequency of 2/18, and section F has an actual frequency of 4/18.

Calculating the difference between the expected and actual frequency for each section, we find that section C has the smallest difference, making it the outcome with a frequency closest to its expected frequency.

Learn more about Probability

brainly.com/question/30034780

#SPJ11

The average temperature from month 1 to month 6 is approximately 58.3 degrees Fahrenheit.

The temperature of a town t months after January can be estimated by the function f(t) = –20 cos(64t) + 66. To find the average temperature from month 1 to month 6, we need to evaluate the integral of f(t) from t=1 to t=6 and divide by the number of months:

Average temperature = (1/6 - 1) ∫[1,6] f(t) dt

= (1/6 - 1) ∫[1,6] (-20 cos(64t) + 66) dt

= (1/6 - 1) [-5 sin(64t) + 66t] [1,6]

= (1/6 - 1) [-5 sin(646) + 666 - (-5 sin(641) + 661)]

= (1/6 - 1) [-5 sin(384) + 395]

≈ 58.3 degrees Fahrenheit

Therefore, the average temperature from month 1 to month 6 is approximately 58.3 degrees Fahrenheit.

Learn more about average temperature.

brainly.com/question/29086717

#SPJ11

Answer: 31

Step-by-step explanation:

We know that the perimeter is equal to 2W + 2L.

       178 cm = 2W + 2L

We also know that the length is 4 cm less than twice the width.

       L = 2W - 4

We will create a system of equations. Then we will solve with substitution.

       178 cm = 2W + 2L

       L = 2W - 4

       178 cm = 2W + 2L

       178 cm = 2W + 2(2W - 4 cm)

       178 cm = 2W + 4W - 8 cm

       178 cm = 6W - 8 cm

       186 cm = 6W

               W = 31

Answer:

31 cm

Step-by-step explanation:

First, we choose two variables.

Let W = width.

Let L = length.

The perimeter of a rectangle is:

perimeter = 2(L + W)

Now we translate the statements of the problem into two equations.

"the perimeter is 178 cm"

2(L + W) = 178

Divide both sides by 2:

L + W = 89

"the length of a rectangle is 4 cm less than the twice of the width"

L = 2W - 4

We have a system of equations:

L + W = 89

L = 2W - 4

Rewrite the first equation:

L + W = 89

Since the second equation is already solved for L, we can easily use the substitution method.

Substitute 2W - 4 for L in the equation above.

2W - 4 + W = 89

Combine like terms on the left side.

3W - 4 = 89

Add 4 to both sides.

3W = 93

Divide both sides by 3.

W = 31

Answer: The width is 31 cm

Check:

The length is 4 cm less than twice the width. 2 × 31 cm - 4 cm = 58 cm

The length is 58 cm, and the width is 31 cm. Calculate the perimeter.

P = 2(L + W) = 2(58 cm + 31 cm) = 2(89 cm) = 178 cm

The perimeter is 178 cm as the problem states, so the answer, width = 31 cm, is correct.

The answer would be D

Since Lucy's number has a digit of 5 which is 10x greater than Ethan's number, 5 x 10 = 50; so 50 would be in the tenth place, and option d is the only one with 5 in the tenth place.

The value of a number moves one decimal place to the left for each position it moves to the right. So, the number that Lucy could have written where the number 5 has a value 10 times larger than Ethan's number is 4974.65.

In order for the value of the digit 5 to be 10 times larger in Lucy's number than it is in Ethan's, the '5' in Lucy's number should reside one place left compared to Ethan's. This means the 5 should be in the tens place, hundreds place, or beyond. So, we should look for a number having digit 5 at those places.

Let's examine the given options:

Therefore, the correct answer is C. 4974.65.

https://brainly.com/question/35447631

#SPJ2

The ratio of the corresponding dimensions of the smaller pyramid to the larger pyramid is 1/3.

Dimension is the measure of the distance or length of an obeject.

To calculate the ratio of the corresponding dimensions of the smaller pyramid to the larger pyramid, we use the formula below

Formula:

l/L = √(a/A) ........................ Equation 1

Where:

From the question,

Given:

Substitute these values into equation 1

Learn more about dimension here: https://brainly.com/question/27404871

#SPJ1

The value of (f + g)(−3) given the functions f(x) = x² − 6x − 4 and g(x) = 5x + 3 is 11.

To find (f + g)(-3), we first need to add the functions f(x) and g(x) together, and then evaluate the resulting function at x = -3.

f(x) = x² - 6x - 4
g(x) = 5x + 3

Now, let's add f(x) and g(x):

(f + g)(x) = (x² - 6x - 4) + (5x + 3) = x² - x - 1

Now that we have the combined function, we can evaluate it at x = -3:

(f + g)(-3) = (-3)² - (-3) - 1 = 9 + 3 - 1 = 11

So, (f + g)(-3) = 11.

Learn more about functions here: https://brainly.com/question/30715060

#SPJ11

The value of FE comes out to be 35.

An angle is a geometric figure formed by two rays or line segments that share a common endpoint, called the vertex. The measure of an angle is typically given in degrees or radians, and it describes the amount of rotation needed to move one of the rays or line segments to coincide with the other. Angles are used in many areas of mathematics, physics, engineering, and other sciences to describe and analyze various phenomena.

Parallel lines have the same slope and will never meet, no matter how far they are extended. Parallel lines are important in geometry and other areas of mathematics, as well as in engineering, architecture, and other fields where precise measurements and constructions are required.

[tex]4x-1/x+5 = 60/24\\5x+25= 8x-2\\27= 3x\\x=9[/tex]

Therefore FE= 4×(9)-1

=35

Learn more about lines here:

https://brainly.com/question/2696693

#SPJ1

The correct option is the last one, the surface is 3425 m²

Remember that for a sphere of radius R, the volume is:

V = (4/3)pi*R³

S = 4pi*R²

Where pi = 3.14

Here the volume is  6,000π m³, then the radius will be:

R =∛( (3/4)*6,000m³)

R = 16.51 m

Then the surface area is:

[tex]S = 4*3.14*( 16.51 m)^2 = 3,424 m^2[/tex]

The option that is closser to it is the fourth one, so that is the correct option.

Learn more about spheres at:

https://brainly.com/question/10171109

#SPJ1

Answer:

the answer is D

Step-by-step explanation:

Answer:

C. x = 2 1/3, y = 1 1/3.

Step-by-step explanation:

To solve this question, we need to plot the two equations on the graph and see where they cross. The graph below shows the two lines in different colors:

Answer:

------------------------------------------------

A linear equation is an equation of a straight line.

It describes the straight-line graph of a set of ordered pairs (x, y) that are solutions to the equation.

There are different forms of linear equations.

The slope-intercept form of a linear equation is y = mx + b.

The equation y = -2x + 10 is in slope-intercept form. Its graph is a line with slope -2 and y-intercept 10. It shows the set of all solutions to the equation.

As per description above, the correct answer choice is B, all the other options are false.

Answer:

The answer is 9

Step-by-step explanation:

When x = 2,

f(2) = 3×2^2-3

f(2) = 3×4-3

f(2) = 12-3

f(2)= 9

The required probability 40%

To find the probability that the marble that hits the yard stick between A and D hits it between C and D, we need to find the length of the interval between C and D, and divide it by the length of the interval between A and D.

The length of the interval between C and D is

36 - 26 = 10

The length of the interval between A and D is

36 - 11 = 25

The probability that a marble will strike a yardstick between A and D and C and D is

10/25 × 100 = 40%

Therefore, the probability that a marble will strike a yardstick between A and D and C and D is 40%

Learn more about Probability here

https://brainly.com/question/30902578

#SPJ4

Check the picture below.

[tex]4+10x=\cfrac{(9x+20)+10x}{2}\implies 8+20x=19x+20\implies x=12 \\\\[-0.35em] ~\dotfill\\\\ 4+10x\implies 4+10(12)\implies \stackrel{ \measuredangle DEC }{124^o}[/tex]

a) The Pearson correlation coefficient is 0.76.

b) Null hypothesis: There is no significant correlation between the grades in English and Mathematics (H0: r = 0)

Alternative hypothesis: There is a significant correlation between the grades in English and Mathematics (Ha: r ≠ 0)

c) The regression line is: y = 0.64x + 34.18

d) Interpretation and conclusion:  The Pearson correlation coefficient (r) of 0.76 indicates a strong positive correlation between the grades in English and Mathematics.

Correlation analysis:

Using the Pearson correlation coefficient to measure the strength and direction of the linear relationship between two variables.

Hypothesis testing:

Setting up null and alternative hypotheses, and using the t-test to determine whether the correlation coefficient is statistically significant.

Linear regression:

Finding the equation of the regression line that best describes the relationship between the two variables.

Interpretation and conclusion:

Using the results of the analysis to draw meaningful conclusions about the relationship between the two variables and the sample population as a whole.

Here we have

A study was conducted to determine the relationship existing between the grade in English and the grade in mathematics. a random sample of 10 students in uc was taken and the following are the results of the sampling

Student           1     2      3     4     5     6     7     8      9    10

English          75   83   80   77   89   78   92   86   93   84

Mathematics 78   87   78   76   92   81    89   89   91   84​  

a) To compute the Pearson correlation coefficient (r), first calculate the mean, standard deviation, and covariance of the two variables:

Mean of English grades (x)

= (75+83+80+77+89+78+92+86+93+84)/10 = 83.7

Mean of Math grades (y)

= (78+87+78+76+92+81+89+89+91+84)/10 = 84.5

The standard deviation of English grades (Sx)

= √((75-83.4)²+(83-83.4)²+...+(84-83.4)²)/9) = 6.52

The standard deviation of Math grades (Sy)

= √((78-84.4)²+(87-84.4)²+...+(84-84.4)²)/9) = 5.47

Covariance of the two variables

= ((75-83.4)(78-84.4)+(83-83.4)(87-84.4)+...+(84-83.4)(84-84.4))/9 = 26.6

Using the formula, r = cov(X,Y)/(SxSy),

we can calculate the correlation coefficient as follows

r = 26.6/(6.52*5.47) = 0.76

Therefore,

The Pearson correlation coefficient is 0.76.

b) Null hypothesis: There is no significant correlation between the grades in English and Mathematics (H0: r = 0)

Alternative hypothesis: There is a significant correlation between the grades in English and Mathematics (Ha: r ≠ 0)

c) To find the equation of the regression line, we need to calculate the slope (b) and the intercept (a) of the line. The formula for the slope is:

b = r(Sy/Sx) = 0.76(5.47/6.52) = 0.64

The formula for the intercept is:

=> a = y - bx = 84.4 - 0.64(83.4) = 34.18

Therefore,

The equation of the regression line is:

y = 0.64x + 34.18

Interpretation and conclusion:

The Pearson correlation coefficient (r) of 0.76 indicates a strong positive correlation between the grades in English and Mathematics.

The p-value associated with this correlation coefficient can be used to test the null hypothesis.

The equation of the regression line shows that for every one-point increase in the English grade, the predicted increase in the Mathematics grade is 0.64 points.

Therefore,

a) The Pearson correlation coefficient is 0.76.

b) Null hypothesis: There is no significant correlation between the grades in English and Mathematics (H0: r = 0)

Alternative hypothesis: There is a significant correlation between the grades in English and Mathematics (Ha: r ≠ 0)

c) The regression line is: y = 0.64x + 34.18

d) Interpretation and conclusion:  The Pearson correlation coefficient (r) of 0.76 indicates a strong positive correlation between the grades in English and Mathematics.

Learn more about Correlation analysis at

https://brainly.com/question/29785220

#SPJ4

The area of ΔRST, to the nearest square inch is,

Area = 29,17,735.54 square inches

We have,

In ΔRST, s = 990 inches, ∠S=8° and ∠T=60°.

Apply sine rule formula,

sin S / s = sin T / t

sin 8° / 990 = sin 60° / t

0.14 / 990 = 0.87 / t

0.14t = 990 x 0.87

0.14t = 861.3

t = 6,152 inches

Here, ∠R = 180° - (8 + 60)°

∠R = 180 - 68

∠R = 112°

sin S / s = sin R / r

sin 8° / 990 = sin 112° / r

0.14 / 990 = 0.92 / r

0.14r = 0.92 x 990

0.14r = 910.8

r = 910.8 / 0.14

r = 6505 inches

We use the formula

Heron's formula = √s(s - a)(s - b)(s - c)

Where s = a + b + c/2

Solving for s

s = 990 + 6505 + 6,152 /2

s = 6823.5

Solving for the area of the triangle

= √6823.5 × (6823.5 - 990) × (6823.5 - 6,152) × (6823.5 - 6505)

= √6823.5 x 5833.5 x 671.5 x 318.5

= 29,17,735.54 square inches

Learn more about the triangle visit;

brainly.com/question/1058720

#SPJ12

The height and radius of the cone with maximal volume V and surface area S = 8 are h = (4/(3π^2))^(1/4) and r = (1/(3π^2))^(1/4),

respectively.Explanation: To find the height and radius of the cone with maximal volume and surface area of 8, we need to use the formulas for the surface area and volume of a right-circular cone in terms of r and h. We can then use the method of Lagrange multipliers to find the values of r and h that maximize the volume subject to the constraint that the surface area is equal to 8.Using the formulas for the surface area and volume of a cone, we get:S = πr √(r²+h²)V = 1/3πr²hWe can then set up the Lagrangian function L(r,h,λ) = 1/3πr²h + λ(πr √(r²+h²) - 8), where λ is the Lagrange multiplier.Taking the partial derivatives of L with respect to r, h, and λ and setting them equal to zero, we get:∂L/∂r = 2/3πrh + λ(π√(r²+h²) + r²/√(r²+h²)) = 0∂L/∂h = 1/3πr² + λ(πh/√(r²+h²)) = 0∂L/∂λ = πr √(r²+h²) - 8 = 0Solving these equations, we get:h = (4/(3π^2))^(1/4)r = (1/(3π^2))^(1/4)Therefore, the height and radius of the cone with maximal volume and surface area of 8 are h = (4/(3π^2))^(1/4) and r = (1/(3π^2))^(1/4), respectively.(b) The ratio of height to radius for the cone with minimal surface area S and volume V = 5 is h/r = √2.Explanation: Using the formulas for the surface area and volume of a cone in terms of r and h, we can set up the following optimization problem:Minimize S = πr √(r²+h²)Subject to V = 1/3πr²h = 5Using the method of Lagrange multipliers, we can set up the Lagrangian function L(r,h,λ) = πr √(r²+h²) + λ(1/3πr²h - 5), where λ is the Lagrange multiplier.Taking the partial derivatives of L with respect to r, h, and λ and setting them equal to zero, we get:∂L/∂r = π√(r²+h²) + 2λr/3πh = 0∂L/∂h = πr²h/√(r²+h²) - 5λ/3π = 0∂L/∂λ = 1/3πr²h - 5 = 0Solving these equations, we get:h/r = √2Therefore, the ratio of height to radius for the cone with minimal surface area S and volume V = 5 is h/r = √2.(c) No, a cone with given volume V and maximal surface area does not exist.Explanation: Using the formulas for the surface area and volume of a cone in terms of r and h, we can set up the following optimization problem:Maximize S = πr √(r²+h²)Subject to V = 1/3πr²hUsing the method of Lagrange multipliers, we can set up the Lagrangian function L(r,h,λ) = πr √(r²+h²) + λ(1/3πr²h - V), where λ is the Lagrange multiplier.Taking the partial derivatives of L with respect to r, h, and λ and setting them equal to zero, we get:∂L/∂r = π√(r²+h²) + 2λr/3πh = 0∂L/∂h = πr²h/√(r²+h²) - λ/3πr² = 0∂L/∂λ = 1/3πr²h - V = 0Solving these equations, we get:h = rr³ = 3V/πSubstituting h = r into the surface area formula, we get:S = 2

For more similar questions on topic Mensuration

https://brainly.com/question/22290021

#SPJ11

Answer:

Step-by-step explanation:

Let's call the mass of an average man's brain "m."

According to the problem, the mass of an average elephant's brain is 3 4/10 kilograms greater than an average man's brain. We can write this as:

mass of elephant's brain = m + 3 4/10

To find out how many kilograms an average elephant's brain weighs, we need to know the value of "m." However, this information is not given in the problem.

Therefore, we cannot determine the exact mass of an average elephant's brain.

The values based on the exponent will be:

0.024

5670

41952

0.005

73

0.34

900

6

The exponent is the number of times that a number is multiplied by itself. It should be noted that the power is an expression which shows the multiplication for the same number. For example, in 6⁴ , 4 is the exponent and 6⁴ is called 6 raise to the power of 4.

1) 2.4 × 10^-2 = 0.024

2) 5.67 x 10^3 = 5670

3) 4.1952 x 10^4 = 41952

4) 5 × 10^-3 = 0.005

5) 7.3 × 10^1 = 73

6) 3.4 × 10-1 = 0.34

7) 9 × 10^2 = 900

8) 6 × 10*0 = 6

Learn more about exponents on

https://brainly.com/question/13669161

#SPJ1