A sample of 40 observations is selected from one population with a population standard deviation of 5. The sample mean is 102. A sample of 50 observations is selected from a second population with a population standard deviation of 6. The sample mean is 99. Conduct the following test of hypothesis using the .04 significance level.



Is this a one-tailed or a two-tailed test?

State the decision rule.

Compute the value of the test statistic.

What is your decision regarding H0?

What is the p-value?

Answer:

5 < 1/2x

5 is less than 1/2 of x

Answer:

It will take 250 seconds for 30 liters to pass through the pipe.

Step-by-step explanation:

Let's use just the units only to help us set up and equation.

liters/sec × sec = liters

This works. Fill in the numbers we know.

.12 l/sec × ?sec = 30liters

Use a real variable and let's leave off the units so we can write an neater equation to solve.

.12 l/sec × x sec = 30liters

.12x = 30

That's a good equation. Divide by .12 to solve.

x = 30/.12

x = 250

Remember x was seconds. We were asked to find the seconds.

It will take 250 seconds for 30 liters to pass through the pipe.

(In case they ask later, that's 4minutes and 10 seconds)

Answer: Because the slope doesn't tell you any actual points on the line. It only tells you whether the line tilts up or down, and how steeply.

Step-by-step explanation:

Answer:

2x+1<9

collecting the like term

2x<9-1

2x<8

divide both sides by 2

x<4

Answer:

slope 2/5

y-intercept (0,2)

Step-by-step explanation:

The system of inequalities which can be used to determine the number of dogs, d, and the number of cats, c, Nadia can house in the facility on any given day is:

A. 3.45c + 4.60d ≤ 200.

    c + d ≤ 50.

In order to write a system of linear inequalities to describe this situation, we would assign variables to the number of dogs and number of cats respectively, and then translate the word problem into algebraic equation as follows:

Since the daily cost for her facility to house a cat is $3.45 and $4.60 for a dog, with a budget of $200, a linear inequality which represents this situation is given by;

3.45c + 4.60d ≤ 200.

Additionally, the facility has a total of 50 pens;

c + d ≤ 50.

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Pretest-posttest experimental designs are common is true for the t-test for dependent means rather than t-tests in general.

The correct answer is option B.

The use of pretest-posttest designs extends the posttest alone design with nonequivalent groups, one of the most fundamental methods for assessing the effectiveness of an intervention. One group in this two-group design undergoes therapy, and the final results are produced for the other group.

In conclusion, quasi-experimental design has long been a popular research methodology. An intervention that has been delivered to a group of study participants may be easily evaluated using pre-test and post-test designs, a sort of quasi-experimental research. A pretest is an assessment tool used by study participants before they get any form of therapy. Participants in a study are given a posttest, which is an evaluation tool, following their participation in the study.

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Answer:

11 units

Step-by-step explanation:

Diagonals in a rectangle are congruent.

WY and XZ are both diagonals of the rectangle WXYZ.

Therefore, their values are congruent or equal.

6x-7 = 3x+2

Subtract 3x from both sides and add 7 from the left side to isolate the x's equal to a constant.

You get 3x = 9

Divide both sides by 3 to isolate x by itself.

x = 3

Next, plug in the value of 3 for x in any of the equations and you will get 11 units.

Hope this helps!

Therefore , the solution to the given problem of function comes out to be slant asymptotes are y = x -4.

Numbers and their variants, equations & related structures, and geometry and their regions and potential applications are all mathematical topics. The link between a group of input, each of which generates a related output, is referred to as a "function." A function is a relationship between outputs and inputs where each input results in a single, distinct output. Each procedure has a domain and a city / municipality, which are frequently referred to as a scope. Functions are usually represented by the letter f. (x). The input is X. On activity, one-to-one activities, many-to-one activities, throughout operations, as well as on functions are the four main categories of supplied functions.

Here,

There are no limitations on the type of rational function, therefore it is feasible to construct one with each of the three asymptotes.

This is depicted in the attached graph, along with the graph of the rational function it represents. These are the asymptotes of the function.

Vertical asymptotes are x = -4,

horizontal asymptotes are y = 0 and

slant asymptotes are y = x -4.

Additional remarks

We employ an exponential function in our example function. Although it can be expressed as a polynomial of infinite degree, that is not often regarded as a polynomial. The proportion of polynomials is how most authors describe a rational function.

Therefore , the solution to the given problem of function comes out to be slant asymptotes are y = x -4.

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The length of the arc is 5½ units

The length of an arc is the distance covered at a particular angle on the circumference of a circle.

A circumference is the external body of a circle. it is also called the perimeter of a circle

Length of an arc is given as :

l = 2 π r × (θ/360°)

where θ = angle subtended

therefore l = 45/360 × 2 × 22/7 ×7

dividing through by 45

= 1/8× 2 × 22/7 ×7

dividing through by 7

= 1/8 × 2 × 22

= 44/8

dividing through by 4

= 11/2

therefore l = 5 ½ units

This means that the length of the arc is 5 ½ unit

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The price of each bag of popcorn and the price of each drink is $7.5 and $4 respectively.

Let the drinks be represented as d.

Let the popcorn be represented as p.

From the information, Xochitl went into a movie theater and bought 6 bags of popcorn and 4 drinks, costing a total of $65. Thus will be:

6p + 4d = 65

Alonso went into the same movie theater and bought 9 bags of popcorn and 8 drinks, costing a total of $107.50. This will be:

9p + 8d = 107.50

Equating the equation

6p + 4d = 65 ..... i

9p + 8d = 107.50 ..... ii

Multiply equation i by 8

Multiply equation ii by 4

48p + 32d = 520

36p + 32d = 430

12p = 90

Divide

p = 90/12

= 7.5

6p + 4d = 65 .

6(7.5) + 4d = 65

4d = 65 - 45

4d = 20

d = 20/4 = 5

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Answer:

comparing given quadratic equation x²-5x-4=0 with ax²+bx+c=0 we get,

a=1,b=-5,c=-4

Now,

x={-b±√b²-4ac}/2a

={-(-5)±√(-5)²-4×1×-4}/2×1

={5±√25+16}/2

=(5±√41)/2

Hence,B.is the correct option

*mark me brainliest

The properties of exponents used to simplify the expression are:

(a^m)^n = a^(m*n)

(a^m)^n = (a^n)^m

(a*b)^n = a^n * b^n

(a/b)^n = a^n / b^n

Using these properties, we can simplify the expression as follows:

(y3/2 x -1/2)^4

= (y^3/2 * x^-1/2)^4

= y^3/2 4 * x^-1/2 4

= y^(3/24) * x^(-1/24)

= y^6 * x^-2

So the simplified expression is: y^6 * x^-2

The mean of the numbers, given the stem and leaf plot of the number of classrooms in each school in the city, is 84 classrooms

To find the mean of the schools, you first need to add up the number of classrooms in each school and then divided this sum by the number of schools that Evelyn used in the social studies project.

When using a stem and leaf plot in this instance, the stem is the tens figure and the leaf is the ones figure.

This means that a stem of 7 and lead of 7 means 77 classes.

The sum of the number of classrooms is therefore :

= 77 + 77 + 81 + 81 + 82 + 82 + 83 + 84 + 84 + 85 + 85 + 87 + 90 + 90 + 92

= 1, 260 classrooms

The mean is therefore :

= 1, 260 / 15 schools

= 84 classrooms

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Answer:

5

Step-by-step explanation:

adde it all upa and get the answer

The company overall revenue net percentage change is increased by 89.2%.

What is net percentage change?

Two or more percentage changes applied to a quantity consecutively are covered by the idea of successive percentage changes. As the base changes after the first adjustment, the total change in this instance is not simply the addition of the two percentage changes.

If a number N changes by x% and then y%, what will the net percentage change is [tex]x+y+\frac{xy}{100}[/tex] %.

Now in first quarter = 10% increase

In second quarter = 6% decrease

In third quarter = 12% decrease

In fourth quarter = 11% increase.

Now over all percentage change is ,

=> [tex]10-6-12+11+\frac{10.6.12.11}{100}[/tex]

=> 3+79.2

=> 82.2%

Hence the company revenue is increased by 82.2%.

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Según el álgebra de números reales, la potencia del producto es el producto de las potencias.

De acuerdo con la pregunta, tenemos el caso del producto de dos números reales a, b elevados a un potencia n, cuya descripción matemática se presenta a continuación:

(a · b)ⁿ

De acuerdo con el álgebra de números reales, este caso tiene la siguiente equivalencia:

(a · b)ⁿ = aⁿ · bⁿ

De modo, pues, que la potencia de un producto de dos números reales es igual al producto de las potencias de los números reales.

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The area of the trapezoid is calculated as: D. 90 square units.

To find the area of the trapezoid that is shown in the image above, we can decompose the trapezoid into three shapes which are one rectangle and two identical triangles.

Area of triangle = 0.5 * base * height

Area of rectangle = length * width.

Given the following:

x = 8 units

y = 2 units

h = 9 units

Area of the 2 triangles = 2(0.5 * y * h) = 2(0.5 * 2 * 9) = 18 units²

Area of rectangle = x * h = 8 * 9 = 72 units²

Area of trapezoid = 18 + 72 = 90 units²

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On solving the provided question, we can say that the value of the equation here is f(2) = -29 and f(3) = -41

A mathematical equation is a formula that joins two statements and uses the equal symbol (=) to indicate equality. A mathematical statement that establishes the equality of two mathematical expressions is known as an equation in algebra. For instance, in the equation 3x + 5 = 14, the equal sign places the variables 3x + 5 and 14 apart. The relationship between the two sentences on either side of a letter is described by a mathematical formula. Often, there is only one variable, which also serves as the symbol. for instance, 2x – 4 = 2.

the equation here is

f(x)=-x-31 +4

f(2) = -29

f(x) = -x-41+3

f(3) = -41

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The answer is 4/5

Probability is a measure of the likelihood of an event occurring. The probability formula is defined as the possibility of an event happening is equal to the ratio of the number of favorable outcomes and the total number of outcomes. Probability of event to happen P(E) = Number of favorable outcomes/Total Number of outcomes.

Given here: Mitch  won 12 matches and lost 3 matches.

Thus the theoretical probability of him winning the next match is 12/15=4/5

Hence, The answer is 4/5

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4x + y = 42 => y = 42 - 4x

3x - 2y = 26 => 3x - 2×(42 - 4x) = 26 => 3x - 84 + 8x = 26

=> 11x - 84 = 26 => 11x = 110 => x=10

y = 42 - 4x => y = 42 -4×10 => y= 42 - 40 => y= 2

Answer:

[tex]x = 10[/tex] and [tex]y = 2[/tex]

Step-by-step explanation:

That appears to be a parallelogram, so we can make the assumption that one side of the shape is equal to the side opposite to it because they are parallel lines.

With that assumption, we can set-up the equations, namely

[tex]42 = 4x+y[/tex] (eq. 1)

[tex]26 = 3x-2y[/tex] (eq. 2)

We can solve for x and y either through substitution or elimination, and it seems like elimination could be a faster way to do it.

Multiply eq. 1 by 2 and add it to eq. 2

[tex]84 = 8x+2y\\26 = 3x-2y[/tex]

-> [tex]110 = 11x[/tex]

[tex]x = 10[/tex]

And then we can substitute it back to any equation, and the result will be

[tex]y = 2[/tex].

Lena is not correct in her statement that she will use more pages if she puts 5 stickers on a page instead of 10 stickers on a page.

Is it true that if you put 8 stickers on a page instead of 4, you will use less pages?

Yes, it is true that if you put 8 stickers on a page instead of 4, you will use less pages. The total number of stickers divided by the number of stickers per page determines the number of pages needed. In general, the more stickers per page, the less pages will be needed to hold the same number of stickers.

If Lena puts 10 stickers on a page, she will need fewer pages than if she puts 5 stickers on a page.

For example, if she has 50 elephant stickers, she would need 5 pages if she put 10 stickers on a page, but she would need 10 pages if she put 5 stickers on a page.

This is because the total number of stickers divided by the number of stickers per page determines the number of pages needed. In general, the fewer stickers per page, the more pages will be needed to hold the same number of stickers.

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The given expression has one solution which is n = -8.

Expressions are mathematical statements which consist of two or more terms and terms are connected to each other using mathematical operators like addition, multiplication, subtraction and so on.

Given expression is,

6n + 7 + -2n + -14 = 5n + 1

Doing the operations of like terms,

6n - 2n + 7 - 14 = 5n + 1

4n - 7 = 5n + 1

Again grouping with like terms,

4n - 5n = 1 + 7

-n = 8

n = -8

Hence the given expression has solution n = -8.

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Answer:

n = -8

Step-by-step explanation:

6n+7+ -2n + -14=5n +1

=6n -2n -5n =1 -7 +14

=-n = 8

=-n/-1 = 8/-1

=n = -8

Hence the value for n is -8.

The linear function to find average cost will be A=$(2.25+0.079t), average cost of a comic book in 2020 = $4.3, Average cost will be $5 in year 2029.

what is a linear function?

A linear function is a function which forms a straight line in a graph. It is generally a polynomial function whose degree is utmost 1 or 0.  Although the linear functions are also represented in terms of calculus as well as linear algebra. The only difference is the function notation. Knowing an ordered pair written in function notation is necessary too. f(a) is called a function, where a is an independent variable in which the function is dependent. Linear Function Graph has a straight line whose expression or formula is given by;

                                                    y = f(x) = px + q

It has one independent and one dependent variable. The independent variable is x and the dependent one is y. P is the constant term or the y-intercept and is also the value of the dependent variable. When x = 0, q is the coefficient of the independent variable known as slope which gives the rate of change of the dependent variable.

Now

Initial value = $2.25 in 1994

cost in 2016 = $3.99

Therefore

3.99=2.25+2.25*r*22/100

r=0.079

where r=rate

then

Average cost=initial value+0.079t

Hence

A=$(2.25+0.079t)

where t=time (given year - 1994)

cost in 2020=$(2.25+0.079*26)

cost in 2020=$4.3

Now for A=$5

5=2.25+0.079t

t=35years

Hence Average cost will be $5 in year 2029.

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The part of the points that Iniko score will be 4/15.

A fraction simply means a piece of a whole. In this situation, the number is represented as a quotient such that the numerator and denominator are split. In this situation, in a simple fraction, the numerator as well as the denominator are both integers.

In this case, Aella Iniko and Loki played a game. Aella scored 2/5 of the points, and Loki scored 1/3 of the point.

The part of the points that Iniko score will be

= 1 - (1/3 + 2/5)

= 1 - (5/15 + 6/15)

= 1 - 11/15

= 4/15

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In matrix C    value of c34 + c51 = 3 + 9 = 12

A matrix is a rectangular or square arrangement of numerical terms where the terms are arranged into rows and columns. Depending on the size of rows and columns, matrix are various types such as square, rectangular, upper triangular, lower triangular and so on.

What is the value of c34+ c51?

we are given a 5 × 5 matrix square matrix that means number of rows and number of columns is both 5.

the matrix is denoted by C.

C = 2  9  5  7  5

      4  2  4  4  3

      3  8  2  3   8

      2  3  4  8   2

      9  7  7   3  1

we know the formula for identify the elements of a matrix is given by

a₁₁  a₁₂  a₁₃  a₁₄  a₁₅

a₂₁  a₂₂ a₃   a₂₄   a₂₅

a₃₁  a₃₂  a₃₃  a₃₄  a₃₅

a₄₁  a₄₂₂  a₄₃  a₄₄  a₄₅

a₅₁  a₅₂    a₅₃  a₅₄  a₅₅

The above is a 5 x 5 square matrix in where the elements are identified by a.

If we compare the two matrices, we can determine that c34 is 3 and c51 is 9.

Therefore, c34 + c51 = 3+9 =12

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Answer:

a) Balph can lose a maximum of 6 times in a row before running out of money and not being able to place any more bets. This is because if he loses 6 times in a row, he would have to bet $64 (1+2+4+8+16+32) which is more than the $31 he has in his wallet.

b) The probability that Balph wins a dollar is 0.9596 and the probability that he loses everything is 0.0404. These probabilities are calculated by assuming a 18/38 probability of winning each bet and using the martingale betting strategy.

c) The expected value of Balph's net winnings from one martingale is -$0.29236. This means that on average, Balph can expect to lose $0.29236 each time he plays the martingale betting strategy.

d) The possible values for the total amount wagered are $1, $3, $7, $15, $31, and $64. These values correspond to the amount wagered after losing 0, 1, 2, 3, 4 and 5 times in a row. The probability of each value depends on the probability of losing that many times in a row, calculated using the 18/38 probability of winning each bet. The expected value of the number of dollars wagered is $5.55475.

e) The amount Balph wins per dollar bet is -0.0527. This number is calculated by dividing the expected value of Balph's net winnings by the expected value of the number of dollars wagered. This number is less than zero, indicating that on average, Balph will lose money for every dollar he bets.

Answer:

B

Step-by-step explanation:

The coordinates of point A are ( 5/4, -3/4)

What are coordinates?

A pair of numbers that use the separations between the two reference axes to define the location of a point on a coordinate plane. usually represented by the x- and y-values, respectively, (x, y).

The position of a point or a shape in a given space is determined by coordinates, which are numbers (a map or a graph ).

x - coordinate = 5 grid lines to the right of the y-axis

y - coordinate =   3 grid lines below the x-axis.

The point A is in the 4th quadrant

(x,y) = ( + 5 grid lines, -3  grid lines )

There are increments I have one over four for each grid line on each of the two axes

This means,

(x,y) = ( + 5 * 1/4, -3*1/4 ) = ( 5/4, -3/4)

So,  the coordinates of point A are ( 5/4, -3/4)

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By linear algebra , we can find that number of people having access to safe drinking water is 6.1 million.

The solution of linear systems of differential equations is facilitated by the use of linear algebra in conjunction with calculus. Analytic geometry, engineering, physics, the natural sciences, computer science, computer animation, and the social sciences all use methods from linear algebra (particularly in economics).

It is simpler to analyze linear systems involving differential equations by combining calculus with linear algebra. Techniques from linear algebra are used in many fields, including the social sciences, engineering, physics, computer science, and computer animation (particularly in economics).

equation,

p+1.9=7.0

p=7.0-1.9

p=6.1

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