I need Help please Correct Answer mark you as the Brainleist.

Answer:

Step-by-step explanation:

3.8-2.923

Change to 3.800 to match the number of digits in the second number. Work from right to left. 3 minus 0 is 7. work our way over until the end. You should get 0.877 for an answer.

One bagel costs 155 cents.

An algebraic expression is the combination of numbers and variables in expressing and solving a particular mathematical question.

Let x = cost of one bagel

y = cost of one toast

z = cost of one muffin

If two pieces of toast and a bagel costs $3.15, then 2y + x = 3.15.

2y + x = 3.15   ⇒   x = 3.15 - 2y     (equation 1)

If a bagel and a muffin costs $3.30, then x + z = 3.30.

x + z = 3.30     (equation 2)

Substitute equation 1 to equation 2.

x + z = 3.30     (equation 2)

3.15 - 2y + z = 3.30   ⇒   z = 0.15 + 2y      (equation 3)

If a piece of toast, two bagels, and three muffins costs $9.15, then

y + 2x + 3z = 9.15     (equation 4)

Substitute equations 1 and 3 to equation 4.

y + 2x + 3z = 9.15     (equation 4)

y + 2(3.15 - 2y) + 3(0.15 + 2y) = 9.15

y + 6.30 - 4y + 0.45 + 6y = 9.15

3y = 2.4

y = 0.8

Substitute the value of y to equation 1.

x = 3.15 - 2y     (equation 1)

x = 3.15 - 2(0.8)

x = 1.55

Hence, the cost of one bagel is $1.55 or 155 cents.

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You arrange 5 letters in 7893600 ways

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

Letters to use = 5

Total available letters = 26

The letters are distinct

This means that the letters cannot be repeated

So, we have

First = 26, Second = 25 ....... Fifth = 22

Using the above as a guide, we have the following:

Ways = 26 * 25 * 24 * 23 * 22

Evaluate

Ways = 7893600

Hence, the arrangement is 7893600

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Answer:

834133.264

Step-by-step explanation:

Given that,

The population of Syria is 19.398,448

The growth rate of the population is 4.3%

It means that the population is increasing at the rate of 4.3%. Expected population will be :

\(P=19398448\times \dfrac{4.3}{100}\\\\P=834133.264\)

So, the expected population is 834133.264 .

Answer:

it is 3

Step-by-step explanation:

beacuse i did it

Answer: 960^3 cm or 960 cubic centimeters

Step-by-step explanation:

Cubic because measuring 3 dimensions.

32x45 = area of given face

32x45= 1440

height of water = 10 cm

so,

area of given face x 10 =

32x45x10 or lxwxh (Volume)

so

1440x10= 14,400

1440x8= 11,520

so 14,400 - 11,520 = 2880

V of three plants = 2880

so, 2880/3 = volume of one plant

2880/3=960

V of singe plant = 960 units ^ 3

The difference in volumes represents the total volume of three plants, so answer should be divided by 3.

Hope This Helped!

Answer:  one plastic water plant volume =  960 cm³

Step-by-step explanation:

Total volume = Water Volume + 3 plants volume

Total Volume = 32 cm x 45 cm x 10 cm = 14 400 cm³

Water volume = 32 cm x 45 cm x 8 cm = 11 520 cm³

3 Plants volume = 14,400 cm³ - 11,520 cm³ = 2880 cm³

1 Plant volume = 2,880 cm³ : 3 = 960 cm³

It is given that P = principal, R = rate of interest and T = time

Formula to find compound interest is:

A = P(1 + R/100)^T

where A = amount received after n years

P = principal amount invested

R = rate of interest

T = time for which the amount is invested

The interest earned on savings that are computed using both the original principal and the interest accrued over time is known as compound interest.

It is thought that Italy in the 17th century is where the concept of "interest on interest" or compound interest first appeared. It will accelerate the growth of a total more quickly than simple interest, which is solely calculated on the principal sum.

Money multiplies more quickly thanks to compounding, and the more compounding periods there are, the higher the compound interest will be.

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The median of X is 1;  P(X > 2) = 0; P(one observation < 2 and the other > 2) = P(X < 2) * P(X > 2) = 0 * 0 = 0; Var(X) is approximately 0.33; E(X) is 1 and  the value of q such that P(X < q) = 0.95 is 1.9.

(a) To find the median of X, we need to find the value of x for which the cumulative distribution function (CDF) equals 0.5.

Since the PDF is given as f(x) = 1/2 for 0 < x < 2 and 0 otherwise, the CDF is the integral of the PDF from 0 to x.

For 0 < x < 2, the CDF is:

F(x) = ∫(0 to x) f(t) dt = ∫(0 to x) 1/2 dt = (1/2) * (t) | (0 to x) = (1/2) * x

Setting (1/2) * x = 0.5 and solving for x:

(1/2) * x = 0.5;  x = 1

Therefore, the median of X is 1.

(b) To find P(X > x), we need to calculate the integral of the PDF from x to infinity.

For x > 2, the PDF is 0, so P(X > x) = 0.

Therefore, P(X > 2) = 0.

(c) To find the probability that one observation is less than 2 and the other is greater than 2, we need to consider the possibilities of the first observation being less than 2 and the second observation being greater than 2, and vice versa.

P(one observation < 2 and the other > 2) = P(X < 2 and X > 2)

Since X follows a continuous uniform distribution from 0 to 2, the probability of X being exactly 2 is 0.

Therefore, P(one observation < 2 and the other > 2) = P(X < 2) * P(X > 2) = 0 * 0 = 0.

(d) The variance of X can be calculated using the formula:

Var(X) = E(X²) - [E(X)]²

To find E(X²), we need to calculate the integral of x² * f(x) from 0 to 2:

E(X²) = ∫(0 to 2) x² * (1/2) dx = (1/2) * (x³/3) | (0 to 2) = (1/2) * (8/3) = 4/3

To find E(X), we need to calculate the integral of x * f(x) from 0 to 2:

E(X) = ∫(0 to 2) x * (1/2) dx = (1/2) * (x²/2) | (0 to 2) = (1/2) * 2 = 1

Now we can calculate the variance:

Var(X) = E(X²) - [E(X)]² = 4/3 - (1)² = 4/3 - 1 = 1/3 ≈ 0.33

Therefore, Var(X) is approximately 0.33.

(e) The expected value of X, E(X), is given by:

E(X) = ∫(0 to 2) x * f(x) dx = ∫(0 to 2) x * (1/2) dx = (1/2) * (x²/2) | (0 to 2) = (1/2) * 2 = 1

Therefore, E(X) is 1.

(f) The value of q such that P(X < q) = 0.95 can be found by solving the following equation:

∫(0 to q) f(x) dx = 0.95

Since the PDF is constant at 1/2 for 0 < x < 2, we have:

(1/2) * (x) | (0 to q) = 0.95

(1/2) * q = 0.95

q = 0.95 * 2 = 1.9

Therefore, the value of q such that P(X < q) = 0.95 is 1.9.

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The equivalent of the quotient expression 5/3-i is 1.5 + 0.5i

From the question, the expression is given as

5/3-i

Rewrite the above expression properly

So, we have

5/(3 - i)

Rationalize the above expression

So, we have the following equation represented as

5/(3 - i) = 5/(3 - i) * (3 + i)/(3 + i)

Evaluate the products in the above equation

So, we have

5/(3 - i) = (15 + 5i)/(9 + 1)

Evaluate the difference and the sum

5/(3 - i) = (15 + 5i)/10

Divide

5/(3 - i) = 15/10 + 5i/10

So, we have

5/(3 - i) = 1.5 + 0.5i

Hence, the equivalent expression is 1.5 + 0.5i

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The specific critical value for a one-tailed dependent samples t-test at the p < .05 level for a study with 30 participants is :

1.699

To find the specific critical value for a one-tailed dependent samples t-test at the p < .05 level for a study with 30 participants, you will need to refer to the t-distribution table.

1. First, determine the degrees of freedom, which is the number of participants minus 1: df = 30 - 1 = 29.
2. Next, locate the appropriate row for 29 degrees of freedom in the t-distribution table.
3. Look for the value in the one-tailed (0.05) column.

After checking the t-distribution table for 29 degrees of freedom and a one-tailed test with a significance level of p < .05, the critical value is 1.699. Therefore, the answer to your question is 1.699.

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Answer:

4

Step-by-step explanation:

there are three co efficient and three variables

Answer:

The random variable \(\bar x\) has approximately a normal distribution because of the central limit theorem.

Step-by-step explanation:

According to the Central Limit Theorem if we have an unknown population with mean μ and standard deviation σ and appropriately huge random samples (n ≥ 30) are selected from the population with replacement, then the sampling distribution of the sample mean will be approximately normally distributed.  

Then, the mean of the sample means is given by,

\(\mu_{\bar x}=\mu\)

And the standard deviation of the sample means is given by,

\(\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}\)

Let the random variable X be defined as the age of cars owned by residents of a small city.

It is provided that:

μ = 6 years

σ = 2.2 years

n = 400

As the sample selected is too large, i.e. n = 400 > 30, according to the central limit theorem the sampling distribution of the sample mean (\(\bar x\)) will be approximately normally distributed.  

The description you provided corresponds to an independent variable in an experiment.

In scientific experiments, researchers manipulate certain factors or conditions to observe their effect on the outcome, which is known as the dependent variable.

The independent variable is the specific factor that is deliberately changed or controlled by the experimenter. It is called "independent" because its value is not influenced by other variables in the experiment.

Thus, the description you provided corresponds to an independent variable in an experiment.

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The Complete Question

which of the following is described below:

independent variable

dependent variable

controlled experiment

uncontrolled experiment

there is only one of these in an experiment. they are the cause of some change in the experiment. they are the only thing different between two trials or groups in an experiment.

Answer:

x = -8

Step-by-step explanation:

Answer:

This statement is true.

Step-by-step explanation:

The absolute value is how far the number is from zero, so how many steps will it take on a number line to get from that particular number to zero?

Since you can't have negative steps, The -13 in absolute value would be 13.

The -(-13) is the same thing as saying  -1 ( -13 ). Since negative times a negative is a positive, 13=13 is a true statement.

Answer:

4x+3y-23=0

Step-by-step explanation:

4x+3y-23=23-23

4x+3y-23=0

The radius of the ball, to the nearest hundredth, is approximately 10.63 cm.

To find the radius of the spherical ball, we'll use the formula for the surface area of a sphere, which is given by:

Surface Area = 4πr²

Given that the surface area of the ball is 452 cm², we can set up the equation:

452 = 4πr²

Dividing both sides of the equation by 4π, we get:

113 = r²

Taking the square root of both sides, we find:

r ≈ √113

Evaluating √113 to the nearest hundredth, we have:

r ≈ 10.63 cm

Therefore, the radius of the ball, to the nearest hundredth, is approximately 10.63 cm.

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The domain of the function G(x, y) = 7y / (x + y) is all real values of (x, y) except the points where y = -x.

The given function is G(x, y) = 7y / (x + y).

To find and sketch the domain of the function, we need to determine the values of x and y for which the function is defined.

Denominator restriction: The denominator (x + y) should not be equal to zero because division by zero is undefined. Thus, we exclude the values of x and y that make the denominator zero. Therefore, x + y ≠ 0.

Range restriction: The numerator (7y) can take any real value, so there are no restrictions on y.

Now, let's examine the denominator restriction further.

If x + y = 0, then y = -x.

This means that any values of x and y that satisfy y = -x will make the denominator zero, resulting in an undefined function.

To summarize, the domain of the function G(x, y) = 7y / (x + y) is all real values of (x, y) except the points where y = -x.

The sketch of the domain can be visualized as a plane excluding the line y = -x, as shown below:

```

   |\

   | \

   |  \

   |   \

----|----\----

   |    /

   |   /

   |  /

   | /

   |/

```

The shaded region represents the domain of the function, excluding the line y = -x.

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The amount you could save per month would be 25% of your discretionary money.

Discretionary income is the money you have left over after paying taxes and necessary cost-of-living expenses.

The formula for discretionary money is: Discretionary money = Realized income - Fixed expenses. Inputting data, we have: Discretionary money = $3,543.22 - Fixed expenses

Amount to be saved = 25% of discretionary money

Amount to be saved = 0.25 * (Realized income - Fixed expenses)

Therefore, the amount savable is calculated as 0.25 times the difference between your realized income and fixed expenses.

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The fixed charge is about 5 pound. For extra 6 km, extra cost is about 9 pound

A linear equation is in the form:

y = mx + b

Where m is the rate of change and b is the initial value of y.

From the graph:

The fixed charge is about 5 pound.

Using the point (0, 5) and (20, 35)

Charge per mile = (35 - 5) / (20 - 0) = 1.5 pound per mile

For extra 6 km, extra cost = 1.5 * 6 km = 9 pound

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The standard deviation of the population is approximately 11.8 ounces.

Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.

The formula to find the standard deviation is given

σ = √( Σ(x - μ)² / N )

where  μ is the mean.

μ = (94 + 113 + 93 + 123 + 93 + 102) / 6 = 100

Next, we can calculate the deviations of each value from the mean:

94 - 100 = -6

113 - 100 = 13

93 - 100 = -7

123 - 100 = 23

93 - 100 = -7

102 - 100 = 2

σ = √( -6)²+( 13)²+( -7)²+( 23)² +( -7)²+( 2)²/ 6 )

=√36+169+49+529+49+4/6

=√836/6=11.8

Hence, the standard deviation of the population is approximately 11.8 ounces.

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There would be the alcohol content from 2 drinks remaining in the body after 2 hours.

It is commonly estimated that the body can metabolize about one standard drink per hour.

Multiply the rate of metabolism (1 drink per hour) by the number of hours (2 hours).

1 drink/hour × 2 hours = 2 drinks

Subtract the number of drinks metabolized (2 drinks) from the initial number of drinks consumed (4 drinks).

The alcohol content remaining in the body:

4 drinks - 2 drinks = 2 drinks

Therefore, after 2 hours, there would be the alcohol content from 2 drinks remaining in the body.

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The general solution of the given homogeneous differential equation is:y = ±x√(Cx² + 2)

The given differential equation is: 2xyy' + (x² - y²) = 0

We have to find the general solution of the given homogeneous differential equation. To solve the above differential equation, we will use the substitution method.

Put y = vx and y' = v + xv'

Differentiating both sides w.r.t x: y' = v + xv' ⇒ v' = (y' - v)/x

Differentiating again w.r.t x: y'' = v' + xv'' + v' ⇒ y'' = (y'' - 2y'v + v² + xv')/x

Substituting these values in the given differential equation:

2x(v)(v + xv') + (x² - v²x²) = 0

2v + 2x²v' + x - v² = 0

2x²v' + 2v/x - v³/x = -1/x

We can write the above differential equation as:

2x²dv/dx + 2v/x = v³/x - 1/x

Separating the variables and integrating both sides:

∫dx/x = ∫[v/(v² - 2)]dv/x

⇒ ln |x| + ln |v² - 2| + C

⇒ ln |x(v² - 2)| = ln |Cx|

⇒ v² - 2 = Cx² (where C is a constant)

⇒ v = ±√(Cx² + 2)

Putting the value of v in y = vx, we get:

y = x√(Cx² + 2) and y = -x√(Cx² + 2)

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If the sum of two consecutive multiples of a given number is 120 then the given number is 20.

Let x be the number we are looking for, then the consecutive multiples of x can be expressed as x and 2x. We are given that the sum of these consecutive multiples is 120, which can be expressed mathematically as:

x + 2x = 120

Simplifying this equation, we get:

3x = 120

Dividing both sides of the equation by 3, we get:

x = 40

Therefore, the number we are looking for is 40. However, we are asked for the consecutive multiples of x, which are x and 2x.

Substituting x = 40 into these expressions, we get:

Consecutive multiples of 40: 40 and 80

However, we are not done yet. The problem asks for two consecutive multiples of the number x that add up to 120. The multiples we found above do not satisfy this condition, as their sum is 120 but they are not consecutive.

Therefore, we need to find the consecutive multiples of 20 that add up to 120. These can be expressed as 20 and 40, which are consecutive multiples of the number 20. We can check that their sum is indeed 120:

20 + 40 = 60

Therefore, the correct answer is that the number we are looking for is 20.

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The correct statement is Most of the songs were between 3 minutes and 3.8 minutes long.

Based on the given information from the graph, we can determine the following:

The graph shows an upward trend from 2.8 to 3.4 on the horizontal axis.

Then, there is a downward trend from 3.4 to 4 on the horizontal axis.

From this, we can conclude that most of the songs played during the one-hour interval were between 3 minutes and 3.8 minutes long. This is because the upward trend indicates an increase in length from 2.8 to 3.4, and the subsequent downward trend suggests a decrease in length from 3.4 to 4.

Therefore, the correct statement is:

Most of the songs were between 3 minutes and 3.8 minutes long.

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Answer:

A

Step-by-step explanation:

The highest degree term in the polynomial 5x^2 - 1091x - 70 is 5x^2. As x becomes very large, the other two terms become negligible compared to 5x^2.

To determine the monomial expression that best estimates f(x) for very large values of x, we need to consider the dominant term in the function f(x) = 5x^2 - 1091x - 70.

As x approaches infinity, the highest power term in the function, in this case, 5x^2, becomes the dominant term.

This is because the exponential growth of x^2 will surpass the linear growth of the other terms (1091x and 70) as x becomes increasingly large.

Hence, for very large values of x, we can approximate f(x) by considering only the dominant term, 5x^2. Neglecting the other terms provides a good estimation of the overall behavior of the function.

Therefore, the monomial expression that best estimates f(x) for very large values of x is simply 5x^2. This term captures the exponential growth that dominates the function as x increases without bound.

It is important to note that this estimation becomes more accurate as x gets larger, and other terms become relatively insignificant compared to the dominant term.

Therefore, the monomial expression that best estimates f(x) for very large values of x is 5x^2.

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The correct answer is S = {A, D, D, I, T, I, O, N}.

What is probability?

Probability is a measure of the likelihood or chance of an event occurring. It is a number between 0 and 1, with 0 representing an impossible event and 1 representing a certain event. The probability of an event is calculated by dividing the number of ways the event can occur by the total number of possible outcomes.

The sample space is the set of all possible outcomes of an experiment or event.

In this case, the experiment is choosing one card from a set of eight labeled cards.

The sample space for this experiment is the set of all possible cards that can be chosen.

In the given problem, there are eight cards labeled A, D, D, I, T, I, O, N.

The sample space is the set of all possible cards that can be chosen, which is {A, D, D, I, T, I, O, N}.

This is because each card is distinct and can be chosen independently of the others.

Therefore, the correct answer is S = {A, D, D, I, T, I, O, N}.

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Answer: A( A,D, D,I, I,N,O,T)

Step-by-step explanation:

Order does not matter!!

Answer:

4.38 liter

Step-by-step explanation:

The total area of the solid figure is 90 square inches + 27sqrt(3) / 4 square inches.

To find the total area of the solid figure, we need to determine the areas of each face and then add them together.

The solid figure consists of a rectangular prism with dimensions 3" x 3" x 6" and a pyramid on top with an equilateral triangle base.

First, let's find the area of the rectangular prism. The rectangular prism has two identical square faces with side length 3" and four rectangular faces with dimensions 3" x 6". The total area of the rectangular prism can be calculated as:

Area of the square faces: 2 * (3" * 3") = 2 * 9 square inches

Area of the rectangular faces: 4 * (3" * 6") = 4 * 18 square inches

Total area of the rectangular prism: 2 * 9 + 4 * 18 = 18 + 72 = 90 square inches.

Next, let's find the area of the triangular pyramid. The base of the pyramid is an equilateral triangle with side length 3". The height of the pyramid is 3". The formula to find the area of an equilateral triangle is (sqrt(3) / 4) * (side length)^2. Plugging in the values, we have:

Area of the triangular pyramid: (sqrt(3) / 4) * (3" * 3") * 3" = (sqrt(3) / 4) * 9 * 3 = (sqrt(3) / 4) * 27 = 27sqrt(3) / 4 square inches.

Now, we can find the total area of the solid figure by adding the area of the rectangular prism and the area of the triangular pyramid:

Total area = Area of rectangular prism + Area of triangular pyramid

Total area = 90 square inches + 27sqrt(3) / 4 square inches.

Thus, the total area of the solid figure is 90 square inches + 27sqrt(3) / 4 square inches.

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