can someone help me really quick


(please Explain how you know this is correct)

The amount of time it would take for 20% of the water to leak from a full vase is equal to 24.128 minutes.

Mathematically, the volume of a cone can be calculated by using this formula:

V = 1/3 × πr²h

Where:

From the diagram of the cone (see attachment), we have the following parameters:

Diameter of cone = 4.8 in.

Height of cone = 10 in.

Radius of cone = diameter/2 = 4.8/2 = 2.4 in.

Substituting the given parameters into the formula, we have;

Volume of cone, V = 1/3 × 3.142(2.4² × 10)

Volume of cone, V = 60.32 in³.

For the volume of water that has leaked, we have:

Volume of water leaked = 20/100 × 60.31

Volume of water leaked = 12.062 in³.

For the required amount of time, we have:

Time = Volume/Rate

Time = 12.064/0.5

Time = 24.128 minutes.

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Answer:

49 bracelets

Step-by-step explanation:

Let the number of bracelets that can be made be x.

First, let us convert 3.5 hours into minutes.

3.5 * 60 = 210 minutes

Accordingly,

Time (min)            Number of bracelets

30                      ⇒            7

210                    ⇒           x

Now, we can make an expression like this using cross multiplication.

30x = 7 × 210

30x = 1470

Divide both sides by 30.

x = 49

I may utilize the Cp Criterion, AICp, and SBCp to aid in choosing the optimal model. All of them impose sanctions for introducing predictions.

What is subset regression model?

Best subsets regression is a model-building regression analysis that is exploratory. It compares every model that might be built using a specified set of predictors.

There are Cp Criterion, AICp and SBCp that I can use to help select the best model. They all place penalties for adding predictors.

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The date that Chris will have both training sessions again is May 9.

In mathematics, a multiple simply means the product of any quantity. It should be noted that a multiple illustrate to the product of a number given.

In this situation, since Christ has bowling training every 8 days and hockey training every 2 days. The lowest common multiple for 2 and 8 is 8.

Therefore, the next date will be the addition of the day of the training and the number of days that are needed when the lowest common multiple was calculated. This will be illustrated thus:

= May 1 + 8 days

= May 9

The next training is May 9.

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Answer:

µT = 2 (The mean of T is 2)

σT = 1 (The standard deviation of T is 1)

Step-by-step explanation:

This involves the transformation and combination of random variables. We know that the coin flips are independent as the knowledge of one coin flip will not affect the next or another coin flip.

The question has a transformation of H by essentially multiplying it by 4 that, then turns it into T. Knowing that we can multiply the mean of 0.5 by 4 with rules of a linear transformation when multiplying each observation by a positive constant. With that, we get the mean of T to equal 2.

Since we know it is independent, we can solve for standard deviation. To do so, we have to add 0.5 squared 4 times and square root it. That will look like this: Squareroot(0.5^2+0.5^2+0.5^2+0.5^2). That will give you 1 as the standard deviation for T.

Answer:

34

Step-by-step explanation:

hope u new it have fun hsm s

Answer: x = 126

Step-by-step explanation:

We know that 50% of 120 is 60. So, to increase 120 by 50%, we add 60. This gets us 180. Next, we find 30% of 180. This is 54. So, we subtract 54 from 180. So, x = 126

The probability that the islanders will win exactly two games is 0.359.

The binomial distribution is based on the binomial theorem which can be written as (a + b)ⁿ = ⁿC₀aⁿb⁰ + ⁿC₁aⁿ⁻¹b¹ + ⁿC₂aⁿ⁻²b²+ ....+ ⁿCₙa₀bⁿ.

In order to use in the probability, there should be events independent of each other and the sum of there probabilities is 1.

Given that,

The probability of winning is 4/7.

Then the probability to lose is 1 - 4/7 = 3/7.

If islanders win exactly two games out of four, it implies that they will lose 2 as well.

Now, the probability of winning exactly two games can be found using binomial distribution as given below,

⁴C₂(4/7)²(3/7)²

= 6 × 16/49 × 9/49

= 864/2401

= 0.359

Hence, the probability of winning exactly two games is 0.359.

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The probability that mean blood pressure less than 118 is 0.9938.

We have given that,

blood pressure are normally distributed mean of 116

i.e. μ = 116

standard deviation σ = 4.8

n = 36

and we have to find probability that their mean blood pressure will be less than 118.

The formula to find the above probability is,

P(Z=X) = (x - μ) / (σ/[tex]\sqrt{n}[/tex] )

⇒ P(Z < 118) = (118 - 116) / 4.8/[tex]\sqrt{36}[/tex]

                   = 2 / (4.8/6)

                   = 2/0.8

  P(Z < 118) = 2.5

From the z-table the value of z at 2.5 is 0.9938,

⇒ P(Z < 118) = 0.9938.

Therefore the probability that their mean blood pressure will be less than 118 is 0.09938.

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the value for dferror for this analysis is 8.

What is error?

Error is the difference between an actual value and an estimate, or approximate, representation of that value in applied mathematics. The discrepancy between the population's average and the average of a sample taken from that population is a frequent example in statistics. The discrepancy between an irrational number's true value and the values of rational expressions like 22/7, 355/113, 3.14, or 3.14159 serves as an example of round-off error in numerical analysis. A truncation error happens when an infinite series is ignored for all but a small number of terms. For instance, the sum of the infinite series can be used to express the exponential function ex.

df-error = (df-within treatment) - (df-subjects)

df-subjects = n - 1 = 5 - 1 = 4 {n is the no of subjects}

df-within treatment = 12

df-error = 12 - 4 = 8

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The simplified version of the expression (x¹/² y¹/⁹)³ is (x³/² y¹/³)

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

(x^1/2 y^1/9 )^3

Rewrite the expression properly

So, we have

(x¹/² y¹/⁹)³

Open the brackets

This gives

(x¹/² y¹/⁹)³ = (x¹/²)³ * (y¹/⁹)³

Evaluate the expression in brackets

(x¹/² y¹/⁹)³ =(x³/² y¹/³)

Hence, the solution is (x³/² y¹/³)

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Plants C and D have the same ratios of green bottles to total bottles recycled.

The ratio is defined as a relationship between two quantities, it is expressed as one divided by the other.

The table is given in the question,

As per the given question, the required solution would be as:

For plant A,

The ratio of green bottles to total bottles

⇒ 16/172 = 4/43

For plant B,

The ratio of green bottles to total bottles

⇒ 12/135 = 4/45

For plant C,

The ratio of green bottles to total bottles

⇒ 14/154 = 1/11

For plant D,

The ratio of green bottles to total bottles

⇒ 18/198 = 1/11

Thus, plants C and D have the same ratios of green bottles to total bottles recycled.

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Answer:

4 mph

1.5 mph

5 mph

Fastest: Kaliel, slowest: steve

Step-by-step explanation:

The unit for Melissia can be found by finding the slope of the line. The slope is shown to be 4 miles per hour. That is the unit rate, 4 miles per hour.

The unit rate for steve is also shown in the equation y = 1.5x. This equation is the filled in form of y = mx + b where m is equivalent to the slope. Therefore 1.5 is the slope meaning the unit rate is 1.5 miles per hour.

The unit rate for Kaliel is found using the information that he walks 10 miles in two hours. To find how much he goes in 1 hour divide by two getting you 5 miles per hour.

The fastest unit rate is Kalie with 5 miles per hour, and the slowest steve with 1.5 miles per hour.

Answer:

yes I will get suspicious and then

Step-by-step explanation:

he was in a meeting

The coordinates of point B is (-6, 6) if the point A(6,-6) is rejected over the origin and it’s image is point B

It is defined as the change in coordinates and the shape of the geometrical body. It is also referred to as a two-dimensional transformation. In the geometric transformation, changes in the geometry can be possible by rotation, translation, reflection, and glide translation.

It is given that:

Point A(6,-6) is reflected over the origin and it’s image is point B

The rule for transformation:

(x, y) --> (-x, -y)

(6, -6)  --> (-6, 6)

Thus, the coordinates of point B is (-6, 6) if the point A(6,-6) is rejected over the origin and it’s image is point B

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The equation for given Parallel & Perpendicular Lines points and slope and given below.

what is parallel and perpendicular lines?

In a plane, parallel lines are those whose distances between them are constant. Parallel lines do not cross. Lines that cross at a right angle of 90 degrees are said to be perpendicular.  

The equation of a line in slope-intercept form y = mx + c

1. substitute x = 0, y = 3 and m = -2 in equation

3 = -2*0 + c

c = 3, substitute in equation

Then y = -2x + 3

2. substitute x = -3 , y = - 5 and m = -( 3/5 ) in equation

-5 =  -( 3/5 )*(-3 ) + c

c = - 34/5 , substitute in equation

Then  5y = -3x - 34

3. substitute x = -8 , y = 6 and m = -(1/4) in equation

6 =  -(1/4)*(-8 )+ c

c = 8, substitute in equation

Then y = -2x + 8

The equation of line passing through two points is m = ( y2 - y1) / ( x2 - x1)

4. The given points is ( 1, 3) and  ( -3, -5) and substitute in above equation.

Then m = 2

substitute m = 2 and ( 1, 3) in equation y = mx + c

Then  c = 1

substitute m = 2 and c = 1 in equation of y = mx + c

Then the equation is y = 2x + 1

5. The given points is ( 1, 4) and  ( 6, -1 ) and substitute in above equation.

Then m = - (5/4)

substitute m = - (5/4) and ( 1, 4) in equation y = mx + c

Then  c = 21/4

substitute  m = - (5/4) and c = 21/4 in equation of y = mx + c

Then the equation is  4y = -5x + 21

6. The given points is ( -12,14)  and  ( 6, -1 ) and substitute in above equation.

Then m = - (5/6)

substitute m = - (5/6) and( -12,14) in equation y = mx + c

Then  c = 4

substitute  m = - (5/6) and  c = 4 in equation of y = mx + c

Then the equation is y = - ( 5/6 ) + 4

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lines a and d are neither parallel nor perpendicular.

What is the slope of line?

Given two line-side coordinates, use the slope formula to determine the slope of the line. The slope is defined as the ratio of the change in the y values to the change in the x values using the formula m=(y2-y1)/(x2-x1). x1 and y1 are represented by the first point's coordinates. The second points are located at x2, y2, and their locations. Whichever point you choose to classify as the first and which as the second doesn't matter.

The given points of line d is (3,5) and (10,1)

and line an of line a is (5, 8) and (2, 13).

The slope of line d is m 1 = [tex]\frac{1-5}{10-3}[/tex]

m1 = -4/ 7

The slope of line d is m2 = [tex]\frac{13-8}{2-5}[/tex]

m2 = -5/3

if the slope of two lines is equal that is m1 = m2 , then the lines are parallel and the relation m1*m2=−1, then the lines are perpendicular to each other.

Here both condition fails.

Hence, lines a and d are neither parallel nor perpendicular.

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The statement opportunity cost for Germany to produce 1 beer is 1/2 motorcycles is true.

The German economy would be better off if it produced beer and traded motorcycles with the US.

Germans would benefit from specializing in producing beer and engaging in trade with the United States since their opportunity cost is lower (1/2 is less than 3).

A country is said to be having a comparative advantage in producing a good if it can produce it at a lower opportunity cost. Germany has a lower opportunity cost in producing beer so it has a comparative advantage in making beer.

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Answer:

11250

Step-by-step explanation:

The sample size for the given problem is 1499.

What is sample size?

The process of deciding how many observations or replicates to include in a statistical sample is known as sample size determination. Any empirical study with the aim of drawing conclusions about a population from a sample must take into account the sample size as a crucial component.

Given:

An urban economist wishes to estimate the proportion of Americans who own their homes.

p cap = 0.669

1 - p cap = 0.331

margin of error = E = 0.02

 [tex]Z_a_l_p_h_a_/_2[/tex]= 1.645

Sample size = n

[tex]n = (Z_a_l_p_h_a_/_2/E)^2*Pcap*(1 - Pcap)\\= (\frac{1.645}{0.02})^2*0.669*0.331\\ = 1499[/tex]

Hence, the sample size for the given problem is 1499.

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The dimensions of the rectangular swimming pool are 25ft long 10ft wide and 8 feet deep.

A cuboid is a three-dimensional solid shape that has 6 faces, 8 vertices, and 12 edges. It is one of the most commonly seen shapes around us which has three dimensions: length, width, and height. Sometimes the cuboid shape is confused with a cube since it shares some properties of a cube, however, they are different from each other.

Volume of a cuboid  = Length(L) x Width(W) x Depth(d)

but L = 2.5w

2.5w x w x 8 = 2000

20W^2 = 2000

W^2 = 2000/20

W^2 = 100

W = [tex]\sqrt{100}[/tex]

W = 10fft

L = 2.5W, but W = 10ft

L = 2.5 x 10

L = 25ft

In conclusion the length, width and depth are 25ft, 10ft, and 8ft respectively.

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Answer:

Step-by-step explanation:

a 23

b 43

c 56

To know the answer check the given file.

Answer:

[tex]\cos(\theta) + \sin(\theta)[/tex]

Step-by-step explanation:

Use the sine angle sum identity.

[tex]\sin(a+b)=\sin(a)\cos(b)+\cos(a)\sin(b)[/tex]

[tex]\sin(45\textdegree + \theta)=\sin(45\textdegree)\cos(\theta)+\cos(45\textdegree)\sin(\theta)[/tex]

Now, simplify [tex]\sin(45\textdegree)[/tex] and [tex]\cos(45\textdegree)[/tex] to [tex]\dfrac{\sqrt2}{2}[/tex]:

[tex]\sin(45\textdegree + \theta)=\dfrac{\sqrt2}{2} \cdot \cos(\theta)+\dfrac{\sqrt2}{2} \cdot \sin(\theta)[/tex]

Then, factor out [tex]\dfrac{\sqrt2}{2}[/tex] from each term.

[tex]\sin(45\textdegree + \theta)=\dfrac{\sqrt2}{2} \cdot ( \cos(\theta)+\sin(\theta))[/tex]

Finally, identify what is in the parentheses corresponding to the blank space in the question.

[tex]\cos(\theta) + \sin(\theta)[/tex]

Since , a researcher is attempting to determine which ethnic group is more likely to go to the movies at a movie theatre. The dependent variable is metric. Therefore, the Multiple Regression method will be more appropriate analysis of variance.

Multiple regression analysis is a statistical technique that analyzes the relationship between two or more variables and uses that information to estimate the value of the dependent variable. The goal of multiple regression is to develop a model that describes the dependent variable y with multiple independent variables. Linear regression has only one independent and dependent variable. But for multiple regression, there are many independent variables that help explain or predict the dependent variable y better.

The multiple regression equation is given by

y = a + b 1×1+ b2×2+……+ bk xk

where x1, x2, ….xk are the k independent variables and y is the dependent variable

Advantages of multiple stepwise regression:

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It seems that there is perhaps some missing info here. Could you double check your question to validate the information being asked? Tysm!

a)The probability that a customer selected will have more than two credit cards is 0.11 ,b)expected value is 1.34 and c)standard deviation is 0.96.

Given, probability distribution table

X p(X)

0 0.18

1 0.44

2 0.27

3 0.08

4 0.03

where,X= number of credit cards people own

Thus, the probability that a customer selected will have more than two credit cards is 0.11 ,expected value is 1.34 and standard deviation is 0.96.

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Your question is incomplete, Here is the complete question.

A bank vice president feels that each savings account customer has, on average, three credit cards. He collected data over a period of time and found the probability distribution given in the following table. The random variable X, represents the number of credit cards people own.

X p(X)

0 0.18

1 0.44

2 0.27

3 0.08

4 0.03

If necessary, use a leading zero and round to 2 decimal places, e.g, 0.25.

(a) Find the probability that a savings account customer selected at random will have more than two credit cards ?

(b) Find the expected value of the number of credit cards a randomly selected customer owns ?

(c) Find the standard deviation of the number of credit cards a randomly selected customer owns ?

Scores on one variable plotted against scores on a second variable.

The correct answer is (b)

Now, According to the question:

Let's know:

A scatterplot shows:

A scatterplot shows the relationship between two quantitative variables measured for the same individuals. The values of one variable appear on the horizontal axis, and the values of the other variable appear on the vertical axis. Each individual in the data appears as a point on the graph.

Hence, The correct answer is (b) i.e.,

Scores on one variable plotted against scores on a second variable.

Given,

In the question:

A scatterplot shows:

a. the average value of groups of data.

b. scores on one variable plotted against scores on a second variable.

c. the frequency with which values appear in the data

d. the proportion of data falling into different categories.

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The exponential equation of the logarithmic equation ㏑ (x² - 5 · x + 17) = 3 · x + 2 is x² - 5 · x + 17 = e³ˣ ⁺ ².

In this question we find that a logarithmic equation, in which we must eliminate the log operator must be eliminated by relationship between logarithmic and exponential equations, whose relationship is shown below:

Logarithm of an exponential equation

㏒ aˣ = x

Exponential up to an logarithmic equation

[tex]a^{\log x}[/tex] = x

Now, we proceed to eliminate the log operator by algebra properties and relationship between logarithmic and exponential equations:

㏑ (x² - 5 · x + 17) = 3 · x + 2

By using an "exp" operators, we get the following expression:

x² - 5 · x + 17 = e³ˣ ⁺ ²

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