find the temperature (in k) at which the root-mean-square speed of ch4 molecules is the same as the root-mean-square speed of o2 molecules at 448.8 k.

The function for the quadratic model that gives the average revenue in dollars where x is the price in dollars of a large one-topping pizza, with data from 9.25 ≤ x ≤ 14.25 is -105.6x² + 254.28x - 12.16.

Quadratic model

In regression, quadratic model means  mathematical model represented by a quadratic equation such as Y = aX² + bX + c, or by a system of quadratic equations.

Given,

A pizza parlor has been experimenting with lowering the price of their large one-topping pizza to promote sales. the average revenues from the sale of large one-topping pizzas on a Friday night (5 p.m. to midnight) at various prices are given below.

Here we need to find the quadratic model function with data from 9.25 ≤ x ≤ 14.25.

While we plot the given table of values in the graph then we get the graph like the following.

Through the graph we have identified that the value of

mean of x 11.75

mean of y 1,165.35

correlation coefficient r 0.9924547615

A -105.6

B 254.28

C -12.16

So, through these values the quadratic model of the function is written as,

=> -105.6x² + 254.28x - 12.16.

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The equation y=0.75x is the relationship between x, the length of the chain in feet, and y, the price of the chain.

The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.

Given that hardware store sells many different sizes of chains.

The price of each chain is determined by its length.

From the table we need to find the equation  best represents the relationship between x, the length of the chain in feet, and y, the price of the chain.

Let us find this by taking 0.75 as x and multiplying with lengths to get the price.

1.8×0.75=1.35

3×0.75=2.25

3.4×0.75=2.55

6.2×0.75=4.65

y=0.75x.

Hence, y=0.75x is equation best represents the relationship between x, the length of the chain in feet, and y, the price of the chain.

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Answer: 84

Step-by-step explanation: so 7:8 increased by some number is 180 degrees. add 7 and 8 to get 15. 180/15 is 12 so x = 12 7*12 is 84.

2034.72ft³ is the required cylinder volume.

The capacity of a cylinder determines how much material it can carry, or we may say that the volume of a cylinder is the total number of unit cubes that can fit inside of it.

The volume of a cylinder is r²h, and its surface area is 2πrh+2πr².

The volume of cylinder Formula: V = A × h

We will assume the cylinder is a right circular cylinder.

Then, we have the formula:

V = πr²h

We already know:

Radius = 6ft

Height = 18ft

Now, calculate the volume as follows:
(V) = π× 6² × 18

(V) = 2034.72ft³

Therefore, 2034.72ft³ is the required cylinder volume.

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The answer to following questions are as follows:-A)experiment

B)meaning “statistically non significant” C)explained below

A wave is a dynamic disturbance that propagates over one or more quantities in the domains of physics, mathematics, and allied sciences. When waves are periodic, those parameters repeatedly oscillate around an equilibrium value at a certain frequency.

The answers are: a) It is an experiment since some claims are not supported by evidence.

b) When the analysis reveals that there are substantial variations between the observed, "not statistically significant" refers to "statistically non significant." And we are unable to analyse any of the statistics' results.

c) The fact that Motorola, a cell phone company, funded this research reveals to us that this claim is untrue because Motorola conducts this research to boost their sales.

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45 different choices of pens you have with this band.

What is combination?

A combination is a choice made in mathematics from a group of different elements when the order of the choices is irrelevant (unlike permutations). For instance, if three fruits, such as an apple, an orange, and a pear, are supplied, there are three possible pairings of the two: an apple and a pear. Formally speaking, a k-combination of a set S is a subset of S's k unique components. In other words, two combinations are the same if and only if they have the same members. (It is not important how the individuals in each set are arranged.) The quantity of k-combinations for a set with n components

A popular brand of the pen is available in 15 colors and 3 writing tips.

Choosing from one of 15 colors and one of 3 writing tips.

Each color could have one of two different writing tips.

To find the total different pens available multiply the number of colors by the number of tips: 15*3=45

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Answer:

-10 = x

Step-by-step explanation:

2x = 3x + 10  Is this what you meant to write?  Subtract 2x from both sides

0 = x + 10  Subtract 10 from both sides

-10 = x

or are you combining like terms?

2x + 3x + 10

5x + 10

The percentage of children aged between the ages of 8 - 12 who own phones are, in fact, lower than the 52% industry average. Of the 832 children aged 8 to 12 who were questioned by the national consumer league, 449 had cell phones.

You must use survey data to calculate the percentage of youngsters between the ages of 8 as well as 12 who own phones to ascertain whether the commercial manager's assertion is accurate. To achieve this, divide the total number of children polled (832) by the total number of kids who own phones (449), multiply the outcome by 100 to get the percentage, and so on.

This estimate gives a percentage of 53.8%, which is slightly higher than the advertising manager's stated figure.

This implies that the claim made by the management could not be genuine, and more investigation would be required to ascertain if it is real or not.

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The solution for r in the equation is r = 3

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

\dfrac12r-3=3\left(4-\dfrac32r\right)

Rewrite the above expression properly, as a fraction

So, we have the following representation

1/2r - 3 = 3(4 - 3/2r)

To start with, we need to open the brackets

So, we have the following representation

1/2r - 3 = 12 - 9/2r

Next, we multiply through by 2 to eliminate the fraction

This gives

r - 6 = 24 - 9r

Solving further, we collect the like terms

So, we have

r + 9r = 24 + 6

Evaluate the like terms

10r = 30

So, we have

r = 3 --- by dividing both sides by 10

Hence, the solution is 3

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Answer

$1,580.54

1215.80×(1+0.3)= 1580.54

Answer: 89.7

Step-by-step explanation:

The number of men on the sight-seeing tour was 22.

What is the proportion?

A unique class of ratio called a percentage has the numerator and denominator combined. An illustration is the ratio of deaths to men, which is calculated by dividing deaths to men by deaths to men and women (i.e. the total population).

We have,

w/c = 5/2

w/c = 5/2

w = 5x  

and c=2x

for some integer x. Q : m =?

(1) on the sight-seeing tour, the ratio of the number of children to the number of men was 5 to 11

c/m = 5/11cm

c=5y and m = 11y,

for some integer y. Not sufficient to calculate m.

(2) the number of women on the sight-seeing tour was less than 30 --> w<30. Not sufficient to calculate m.

(1) + (2)

w = 5x < 30w --> x<6x.

c=2x and as c=5y,

c is a multiple of 5 --> x=5x  

c = 10 = 5y --> y = 2

m = 11y = 22.

Hence, the number of men on the sight-seeing tour was 22.

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1.The following is the 90% confidence interval for the mean difference between the park's tree heights in 2009 and 2019:

(11.59, 14.21)

2. The conditions for the confidence interval are of:

A. Large samples and no extreme outliers.

D. Independently sampled pairs.

Given,

What is a confidence interval for the t-distribution?

When the population's standard deviation is unknown, the t-distribution is utilized, and the boundaries of the confidence interval are provided using the following formula:

x ± t s/√n

When the equation's variables are laid down as follows:

The sample mean = x

The critical value = t

The sample size = n

The standard deviation for the sample = s

Using a t-distribution calculator, the critical value is t = 1.6766 for a two-tailed 90% confidence interval with 50 - 1 = 49 df.

The remaining parameters are given as follows:

x = 12.9, s = 5.52, n = 50

Then the lower bound of the interval is of:

12.9 - 1.6766 x 5.52/sqrt(50) = 11.59.

The upper bound of the interval is of:

12.9 + 1.6766 x 5.52/sqrt(50) = 14.21.

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Question is incomplete. Completed question is given below;

Forest rangers wanted to better understand the rate of growth for younger trees in the park. They took measurements of a random sample of 50 young trees in 2009 and again measured those same trees in 2019. The data below summarize their measurements, where the heights are in feet.

Year Mean SD n

2009 11.4 3.6 50

2019 24.3 8.8 50

Difference 12.9 5.52 50

Round all calculated values to 4 decimal places as appropriate.

1. Construct a 90 confidence interval for the mean difference between the height of trees in the park in 2009 and in 2019.

2. What conditions must be met if we want to perform a hypothesis test and answer the question of the management? Select all that apply:

A. Large samples and no extreme outliers.

B. There must be at least 3 levels of the categorical variable.

C. np^≥10 and n(1−p^)≥10

D. Independently sampled pairs.

If there are 6 circles and 10 triangles, then the simples ratio of circles to total shapes is 3 : 8

Total number of circles = 6 circles

Total number of triangles = 10 triangles

Total number of shapes = Total number of circles + Total number of triangles

Substitute the values in the equation

Total number of shapes = 6 + 10

= 16 shapes

The ratio of circles to total shapes = Total number of circles : Total number of shapes
Substitute the values

= 6 : 16

Simplify the ratio

= 3 : 8

Therefore, the simplified ratio of circles to total shapes is 3 : 8

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Babies born to nonsmokers typically weighed between 1,000 and 5,000 grams. Babies of smokers typically ranged in weight from 500 to 4500 grams.

Given,

What is the weight at birth?

Birth weight is the term used to describe a newborn's body weight. Typically, newborns of European heritage weigh between 2.5 and 4.5 kilos, on average 3.5 kilograms, at delivery. Babies from South Asia and China typically weigh 3.26 kg.

Here,

Babies of nonsmokers frequently ranged in weight from 1,000 to 5,000 grams. Babies born to smokers frequently weighed between 500 and 4500 grams.

The usual ranges of birth weights between the two groups do show some notable differences, though. Nearly half of neonates among nonsmokers (56 out of 115, 48.7%) have birth weights between 3,000 and 4,000 grams since there are fewer babies in the lower weight ranges. Fewer babies are in the bigger weight groups, with 40 of 74, or 54%, of the newborns delivered to smokers having birth weights between 2,000 and 3,000 grams.

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Answer: I think it's 2/5, it is closest to the answer I came up with

The largest value less than 500 that both sets have common is 479.

We have given two arithmetic progression such that,

{2,5,8,11,...} and {3,10,17,24,...}

and we have to find the largest value less than 500 that they have in common.

We know the formula for the nth term of the arithmetic progression,

i.e, an = a + (n - 1)d

for the arithmetic progression {2,5,8,11,...} the formula become

am = 2 + (m - 1)3 ----------- (1)

and for the arithmetic progression {3,10,17,24,...} the formula become

an = 3 + (n - 1)7 ------------- (2)

by solving for m and n we get,

m = 160 and n = 69

so equation (1) implies that,

a(160) = 2 + (159)3 = 479

this is the 160th term in the 1st arithmetic progression

and equation (2) implies that,

a(69) = 3 + (68)7 = 479

this is the 69th term in the 2nd arithmetic expression.

Therefore, the value which less than 500 that both the progressions have in common is 479.

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If Aquataste sticks to the agreement, Waterland has an incentive to renege on the agreement by producing 350 gallons because Waterland’s profits would then increase from $375 to $525.

If Waterland and Aquataste both produce 250 gallons each and charge $1.50 per gallon.

There would be 500 gallons in total, and the total revenue would be

$1.50 × 500 = $750

which when shared equally between Waterland and Aquataste would result in each of them getting $375 each.

But if Aquataste sticks to the agreement, Waterland has an incentive to renege on the agreement by producing 350 gallons, still charging $1.50 and Waterland’s profits would then be

$1.50 × 350 = $525

If one cheats they will get sell 350 gallons at the new market price of $1.25 '.

Then, a total quantity of 250+350=600.

Total profit $1.25 × 350 = $437.50

If Waterland also reneges and produces 350, market qty supplied is now 700 and price is $1. Each firm earns profit of $350 ($1*350). This is better for waterland than before since they were selling the 250 gallons at $1.25

Therefore, Profit = 250 × 1.25

                           =312.50

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Answer:

[tex] \huge{ \boxed{f(g(x)) = - 75 {x}^{2} - 1}}[/tex]

Step-by-step explanation:

To find f(g(x)), substitute g(x) into f(x). That is for every x found in f(x), replace it by g(x) and solve.

[tex]f(x) = - 3 {x}^{2} - 1 \\ g(x) = - 5x[/tex]

[tex]f(g(x) )= - 3 ({ - 5x})^{2} - 1 \\ = - 3(25 {x}^{2} ) -1 \\ = - 75 {x}^{2} - 1 \: \: \: \: \: \: [/tex]

We have the final answer as

[tex] \bold{f(g(x)) = - 75 {x}^{2} - 1}[/tex]

Answer:

6cm

Step-by-step explanation:

30 divded by 5 times 1

Answer:

Step-by-step explanation:

5cm

The dimensions of the field that will allow for the maximum area are 200 meters by 400/3 meters

From the question, we have

Fencing available, Perimeter = 1600 meters

Number of sections, n = 3

Represent the dimensions with x and y

So, we have:

Area = Number of sections* x * y = 3xy

Perimeter = (Number of sections * 2x + 2(Number of sections) * y) = 6x + 4y

Recall that

Perimeter = 1600 meters

So, we have

6x + 4y = 1600

A = 3xy

Divide 6x + 4y = 1600 by 2

3x + 2y = 800

Make y the subject

y = (800 - 3x)/2

Substitute y = (800 - 3x)/2 in A = 3xy

A = 3x(800 - 3x)/2

So, we have

A = 1200x - 4.5x²

Differentiate and set to 0

1200 - 9x = 0

So, we have

9x = 1200

Divide by 9

x = 400/3

Recall that y = (800 - 3x)/2

So, we have

y = (800 - 3 x 400/3)/2

Evaluate

y = 200

Hence, the dimensions are 200 by 400/3

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a) q= sin d

Angle is represented by d, and value is represented by q.

b) p = tan1 c

Angle is represented by c, and value is represented by p.

c) arccos n = ν

Angle is represented by n, and value is represented by v.

Given that,

We have to find the variables that indicate the angle and the value of the trigonometric function in each of the following equations.

In the following three equations:

(a) q = sin d;

(b) p = tan1 c; and

(c) arccos n = ν,

We know that,

a) q= sin d

Angle is represented by d, and value is represented by q.

b) p = tan1 c

Angle is represented by c, and value is represented by p.

c) arccos n = ν

Angle is represented by n, and value is represented by v.

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Answer:

Step-by-step explanation:

Answer:

18

Step-by-step explanation:

1)since 9*9 = 81 the square root of 81 is  9

9*2

2)simplify

18

There are 20,000 different phone numbers possible that is 7-digits long and start with either 824 or 825.

Fundamental Principle of Counting, also called the counting rule, is the method to count how many ways multiple independent events can occur.

Based on the given information, all phone numbers are 7-digits long and starts with either 824 or 825. Hence, the four last digits will be the combination of numbers from 0 to 9.

Thus, by Fundamental Principle of Counting, the number of possible outcomes is 20,000.

= (number of phone numbers starting with 824) + (number of phone numbers starting with 825)

= (10 x 10 x 10 x 10) + (10 x 10 x 10 x 10)

= 20,000

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Answer:

k=-1

Step-by-step explanation:

Please look at the attachment, hope this helps, have a great day! :D

Answer: 24%

Step-by-step explanation: First find the percentage of the stereo.

190/250 = 0.76 of 76%

Then subtract 76% from 100% or subtract 190 from 250.

250 - 190 = 60 then 60/250 = 0.24 or 24%

Duke spent 24% of his earnings on his bike.

Answer:

Step-by-step explanation:

go to school

500 mph is the speed of the plane.

This creates a right triangle, with the distance between the plane and the radar station serving as the hypotenuse (s). Let y represent the plane's height and x represent its flight route.

s2 = y2 + x2

Given: the constant value of y = 6

negative since decreasing, ds/dt = -400

Trying to locate dx/dt

Taking the implicit derivative of the above equation's two sides

0 + 2xdx/dt = 2sds/dt

(S/X) ds/dt = dx/dt

When x = 8

s = √(62+82) = √100 = 10

dx/dt = (10/8)(-400) = -500 mph, or 500 mph traveling toward the radar station at a distance of 6 miles.

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The diameter of IC 1101 is 50 times greater than the diameter of the Milky way.

Diameter is a measurement that goes all the way around from starting point to the end point.

Given, the largest galaxy IC 1101 has a diameter of 5 * 10²² and the Milky way has a diameter of 1 * 10²¹.

Diameter of IC 1101 = 5 * 10²²

Rearranging the above term;

Diameter of IC 1101 = 1 * 5 * 10²¹ * 10

Diameter of IC 1101 = 1 * 10²¹ * 50

Diameter of IC 1101 = 50 * diameter of Milky way

Therefore, the answer is 50 times.

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