which ones are the correct ones , please help me thank you !

Answer: 0

Step-by-step explanation:

First you do 1 through 9,

then 10 through 19,

then 20 through 29.

You have one set of 9 numbers,

1-9, and 9 sets of ten numbers such as 20-29. Looking at the tens digit, 1 is used 10 times for 10-19, 2 is used 10 times for 20-29, 3 is used 10 times, etc.  

However, 0 is not used as a tens digit except in the number 100.

If the digit is not 0, then it occurs 10 times as a ten digit.

In addition, it occurs once in each set of ten, for a total of 20 times. For example, consider 6. It occurs ten times in 60-69, and then another ten times as 6, 16, 26, 36, etc., for a total of 20.  

O occurs as 10, 20, 30, 40, 50, etc plus an extra 0 in 100, for a total of 11 times.

Answer:

  4200 feet

Step-by-step explanation:

You want to know the length of the Golden Gate Bridge, given as 263% of the 1595 ft length of the Brooklyn Bridge.

In the context of this math problem, "of" means "times", so we have ...

  263% of 1595 ft = 263% × 1595 ft

The percent sign (%) is interchangeable with the math expression /100, so the GG Bridge is about ...

  263/100 × (1595 ft) = 4194.85 ft

You want this rounded to the nearest hundred, so it becomes ...

  4194.85 ≈ 4200

To the nearest hundred feet, the Golden Gate Bridge is about 4200 feet long.

The volume of the solid obtained by rotating the region under the curve y=2-x about the x-axis over the interval [1, 2] is π units cubed.

In this case, the radius of each disc is r=2-x and the thickness of each disc is dx. The volume of each disc is then πr²dx=π(2-x)²dx.

The volume of the solid is then equal to the sum of the volumes of an infinite number of these discs, which is given by the following integral:

V = π∫_1² (2-x)²dx

V = π * 1

V = π

Evaluating this integral, we get V=π units cubed.

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Answer:

20x-10(or if solving for x x = -1/2

Step-by-step explanation:

Combine Like Terms

10 5/6x+9 1/6x-1-9 = 19 6/6x -10 = 20x-10

Answer:

Step-by-step explanation:

Its D

To decrease the probability of type I error in order to avoid the more consequential error of falsely concluding that the diagnostic tool is effective.

The researchers should decrease the significance level to decrease the probability of type I error. This is because a type I error occurs when the null hypothesis is rejected when it is actually true. In this case, the null hypothesis is that the diagnostic tool is not effective in detecting the condition.

If the researchers decrease the significance level, they are decreasing the probability of making a type I error, which means they are less likely to conclude that the diagnostic tool is effective when it is actually not. This will help the researchers avoid the more consequential error of falsely concluding that the diagnostic tool is effective.

In general, the significance level (also known as the alpha level) is the probability of making a type I error. By decreasing the significance level, the researchers are making the criteria for rejecting the null hypothesis more stringent, which reduces the likelihood of making a type I error.

It is important to note that decreasing the significance level will also decrease the power of the test, which is the probability of correctly rejecting the null hypothesis when it is false.

However, in this case, the researchers are more concerned with avoiding the more consequential error of falsely concluding that the diagnostic tool is effective, so decreasing the significance level is the appropriate action to take.

In conclusion, the researchers should decrease the significance level to decrease the probability of type I error in order to avoid the more consequential error of falsely concluding that the diagnostic tool is effective.

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Diana's savings will be 280 dollars after four weeks.

Expressions are defined as mathematical statements that have a minimum of two terms containing variables or numbers.

The expression is given in the question, as follows:

300 - 5x

Where x represents the number of the week.

We have to determine Diana's savings after four weeks

As per the question, we have

⇒ 300 - 5x

Substitute the value of x = 4 in the above expression

⇒ 300 - 5(4)

⇒ 300 - 20

⇒ 280

This means her savings will be 280 dollars after four weeks.

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The question seems to be incomplete the correct question would be:

Diana's savings at the end of each week can be described by the expression 300-5x where x represents the number of the week.

What is her savings after four weeks?

To do content analysis on the characteristics people seek in a partner by examining the personals section of three newspapers the unit of analysis will be objective of the section.

Given that we are interested in doing content analysis on the characteristis people seek in a partner by examining the personals section of three newspaper.

Content analysis is basically a research tool used to determine the presence of certain words, themes,or concepts within some given qualitative data. Using content analysis, a researchers can quantify and analye the presence meanings and relationships of such certain words, themes and concepts.

When we are required to do content analysis by examining the personals section of three newspapers, its units can be objective of section. Some part is related to matrimonials, some are for rent,etc.and some are for commercial advertisements.

Hence the unit of analysis is objective of the section.

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Answer:

I can’t see the picture but I can help

Step-by-step explanation:

If the line is straight then its linear if not then nonlinear

Answer:

Slope is 1, since we use rise over run which is expressed as 1/1

If two independent events a and b have p(a) > 0, p(b) > 0. The statement that a and b are mutually exclusive events is false.

If two events A and B are independent, it means that the occurrence of one event does not affect the probability of the other event occurring. In other words, the probability of A and B both occurring is equal to the product of their individual probabilities: P(A and B) = P(A) x P(B).

Mutually exclusive events, on the other hand, are events that cannot occur at the same time. If one event occurs, then the other event cannot occur. The probability of both events occurring is zero: P(A and B) = 0.

So, two events A and B can be independent without being mutually exclusive, and they can be mutually exclusive without being independent. The only requirement for independence is that P(A and B) = P(A) x P(B), while the requirement for mutual exclusivity is that P(A and B) = 0.

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Answer:

bananas=$12.72

grapes=$9.48

oranges=$5.85

apples=$5.36

Step-by-step explanation:

To find the total cost for each fruit you would multiply the number of fruit by the cost.

bananas=3*4.24=$12.72

grapes=4*2.37=$9.48

oranges=3*1.95=$5.85

apples=2*2.68=$5.36

The sequence is 5,9,13,17,...

Determine the common difference for the sequance

Answer:

The answer is 3

Step-by-step explanation:

Answer:

We can make 3 whole groups of 2.

Hope that helps. x

Step-by-step explanation:

2, 4, 6, 8

The closest number near to 7 is 6 so we do 6 divided by 2 which equals 3.

If the probability that interest rates will go up and house sales will decrease is estimated to be 0.15, the probability of an increase in interest rates and not a decrease in house sales is 0.05.

To find the probability of an increase in interest rates and not a decrease in house sales, we can use the formula for conditional probability:

P(Interest rates increase and house sales don't decrease) = P(Interest rates increase) - P(Interest rates increase and house sales decrease)

We are given that the probability of interest rates on housing loans going up in the next 6 months is 0.20, and the probability of house sales decreasing is 0.6. We are also given that the probability of interest rates going up and house sales decreasing is 0.15.

To find the probability of interest rates going up and not house sales decreasing, we subtract the probability of interest rates going up and house sales decreasing from the probability of interest rates going up:

P(Interest rates increase and house sales don't decrease) = 0.20 - 0.15 = 0.05

In summary, we can use conditional probability to calculate the probability of an increase in interest rates and not a decrease in house sales.

Given the probabilities of interest rates going up and house sales decreasing, we can subtract the probability of interest rates going up and house sales decreasing from the probability of interest rates going up to find the probability of interest rates going up and not house sales decreasing.

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Answer:

Step-by-step explanation:

To solve the wave equation with Neumann boundary conditions, we'll assume the solution has the form:

u(t, x) = T(t)X(x)

Substituting this into the wave equation:

Mc²T''(t)X''(x) = T(t)X(x)

Dividing both sides by Mc²T(t)X(x), we get:

1/c² * T''(t)/T(t) = X''(x)/X(x)

Since the left side depends only on t and the right side depends only on x, both sides must be equal to a constant value, which we'll denote as -λ². This leads to the following two ordinary differential equations:

T''(t)/T(t) = -λ²c² (1)

X''(x)/X(x) = -λ² (2)

Solving equation (2) for X(x), we have:

X''(x) + λ²X(x) = 0

The general solution to this differential equation is:

X(x) = Acos(λx) + Bsin(λx)

Next, we need to solve equation (1) for T(t). Let's consider the casewhenλ ≠ 0:

T''(t) + λ²c²T(t) = 0

The general solution to this differential equation is:

T(t) = Ccos(λct) + Dsin(λct)

Now, let's consider the case when λ = 0:

T''(t) = 0

The general solution to this differential equation is:

T(t) = E + Ft

To satisfy the Neumann boundary condition at x = 6, we have:

X'(6) = 0

Differentiating X(x) with respect to x:

X'(x) = -Aλsin(λx) + Bλcos(λx)

Setting x = 6 and X'(6) = 0, we get:

-Bλsin(6λ) + Aλcos(6λ) = 0

This equation determines the values of λ for the Neumann boundary condition.

To satisfy the boundary condition at t = 0, we have:

T(0)X(x) = 1

Substituting t = 0, T(0) = E:

E*X(x) = 1

This equation determines the constant E.

Finally, we can express the solution to the wave equation as a linear combination of the solutions obtained above:

u(t, x) = ∑[Acos(λ_nx) + Bsin(λ_nx)][C_ncos(λ_nct) + D_nsin(λ_nct)] + EX(x) + Ft

where λ_n are the solutions to the equation -Bλsin(6λ) + Aλcos(6λ) = 0, and A, B, C_n, D_n, E, and F are constants determined by initial and boundary conditions.

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Answer:

78m

Step-by-step explanation:

Length*width=area

98*x=7644

x=7644/98=78m

The solution for \(θ\) in the equation \(sinθ-\sqrt3cosθ = 0\) is \(θ = 30{^\circ}\)

The solution for \(θ\) in the equation \(2sin2θcos2θ - 1 = 0\) is \(θ = 45{^\circ}\)and \(θ = 135{^\circ}\)

To solve for θ, we can rearrange the equation:

\(sinθ=\sqrt3cosθ.\)

Dividing both sides by \(cosθ\), we get:

\(tanθ= \sqrt3\)

Using the unit circle or trigonometric identities, we find that \(θ = 30{^\circ}\) and \(θ = 150{^\circ}\) are the solutions within the given range of 0 to 360° where the equation is satisfied.

To solve for \(θ\), we can rewrite the equation:

\(2sin2θcos2θ = 1.\)

Using the double angle formulas, we can express sin2\(θ\) and cos2\(θ\) in terms of sin\(θ\) and cos\(θ\):

\(2(2sinθcosθ)(1 - 2sin^2θ) = 1.\)

Simplifying the equation, we get:

\(4sinθcosθ - 4sin^3θ = 1.\)

Rearranging, we have:

\(4sinθcosθ = 4sin^3θ + 1.\)

Dividing both sides by 4cosθ, we get:

\(tanθ = sin^2θ + 1/4.\)

Using the unit circle or trigonometric identities, we find that \(θ\) = 45° and \(θ\) = 135° are the solutions within the given range of 0 to 360° where the equation is satisfied.

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The solution for the system is (0,3) as line a meets the y-axis at (0, -3) and the Intersection point of a and b is (3,0). This makes it obvious that the solution for x will be 0 when the solution for y is 3

Given that the number graph ranges from negative eight to eight on the x-axis and negative eight to eight on the y-axis.

Two lines that are perpendicular to each other intersect at (three, zero). The line with a positive slope is labeled a, and the line with a negative slope is labeled b.

The system is given byx – y = 3 (line a)x + y = 3 (line b)We know that both the lines a and b pass through (3,0).

Let's first find the points of intersection of the line a with the x-axis and the y-axis.

To find the point of intersection of the line a with the x-axis, put y = 0 in the equation x - y = 3x - 0 = 3x = 3So, the point of intersection of line a with the x-axis is (3,0).

To find the point of intersection of the line a with the y-axis, put x = 0 in the equation x - y = 3 0 - y = 3y = -3So, the point of intersection of line a with the y-axis is (0,-3).

Similarly, let's find the points of intersection of the line b with the x-axis and the y-axis.

To find the point of intersection of the line b with the x-axis, put y = 0 in the equation x + y = 3x + 0 = 3x = -3So, the point of intersection of line b with the x-axis is (-3,0).

To find the point of intersection of the line b with the y-axis, put x = 0 in the equation x + y = 3 0 + y = 3y = 3So, the point of intersection of line b with the y-axis is (0,3).

Now, we can plot the graph of the two lines a and b and then find the points of intersection as follows:

Therefore, the solution for the system is (0,3) as line a meets the y-axis at (0, -3) and the intersection point of a and b is (3,0). This makes it obvious that the solution for x will be 0 when the solution for y is 3.

Hence, the answer is (0, 3).Option B. (0, 3)

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On solving the provided question, we can say that - sum of the elements of \(S = (45 * 72 * 111 / 999) = 360\)

Both integers and non-integers are often represented using the decimal system. The Hindu-Arabic number system has been extended in a non-integer way using this. Decimal notation is the term used to describe the representation of numbers in decimal form. The term "decimal" is used to refer to the base-10 number system, which is perhaps the most widely used one. There are 10 single digits in the decimal numeral system.

Consider S to be the collection of real numbers that may be expressed as repeating decimals.

The repeating decimal has the form 0.abc cap.

a, b, and c are three separate digits.

If

\(x = 0.abcabc\\1000x = abc.abc\\1000x - x = abc\\999x = abc\\x = abc/999\)

a, b, c are distinct digits

Number of combinations 10 × 9 × 8

\(= 720 combinations\)

each value appear i= 720/10

\(= 72\)

Sum digits from\(0 to 9 = 45\)

sum of the elements of \(S = (45 * 72 * 111 / 999) = 360\)

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Answer: Part a) translate g(x) 6 units to the right, Translate f(x) 6 units to the left

Part b) k=3 (slope)

Step-by-step explanation:

The maximum possible number of elements in set B is 62.

A set contains elements or members that can be mathematical objects of any kind, including numbers, symbols, points in space, lines, other geometric shapes, variables, or even other sets. A set is the mathematical model for a collection of various things.

The universal set is A consisting of the primary one hundred positive integers.

Now, Set B is a subset of A.

Set B might be made up of the first 62 positive numbers, for example.

Only then is 123 the largest number that can be formed by adding all the components of set B.

Set B contains 62 items altogether.

Additionally, we can carefully swap out one or more pieces from set B and add them to its complement.

In the majority of these cases, set B may have 62 elements.

Therefore, we get the number of elements in set B will be 62.

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Answer:

the profit is $1.66 per pastry

Step-by-step explanation:

Answer:

The profit is 20 cents per pastry

Step-by-step explanation:

The solution set of the given quadratic equation using factorization will be {-3,11}

Given equation is

\(x^{2} -8x-33 = 0\)

The polynomial equation whose highest degree is two is called a quadratic equation. The equation denoted by ax² + bx + c = 0, where a is non-zero.

Let us calculate the roots by factorization

\(x^{2} -11x+3x-33=0\)

\(x(x-11)+3(x-11)=0\)

\((x-11) (x+3)=0\)

\(x-11=0\\x=11\\x+3=0\\x=-3\)

Hence, the solution set of the given quadratic equation will be {-3,11}

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Answer:

A

Step-by-step explanation:

Answer:

60$ (b)

Step-by-step explanation:

we know that 20% of the total is peters - and peter has 12 dollars. We know that 20% 5 times gets us to 100%. So we multiply 12 by 5 to get a total answer of 60$

Answer: Ok.. i hope you do good on it then..

Here is a meme to brighen up your laughter

INTRODUCING LAYS NEW BRAND

Answer:

Good Luck hope u do well!

Step-by-step explanation:

lemme kno if u need help

The finite population correction factor is used in computing the standard error of the sample mean when the sample size is smaller than 5% of the population size.

The finite population correction factor is a adjustment made to the standard error of the sample mean when the sample is taken from a finite population, rather than an infinite population.

It accounts for the fact that sampling without replacement affects the variability of the sample mean.

When the sample size is relatively large compared to the population size (more than half), the effect of sampling without replacement becomes negligible, and the finite population correction factor is not necessary.

In this case, the standard error of the sample mean can be estimated using the formula for sampling with replacement.

On the other hand, when the sample size is small relative to the population size (less than 5%), the effect of sampling without replacement becomes more pronounced, and the finite population correction factor should be applied.

This correction adjusts the standard error to account for the finite population size and provides a more accurate estimate of the variability of the sample mean.

Therefore, the correct answer is option 2: the finite population correction factor is used when the sample size is smaller than 5% of the population size.

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