Are the nonmetal elements located on the left or right side of the periodic table?

Answer:

Step-by-step explanation:

We can use trigonometry to solve this problem. Let's draw a right triangle to represent the situation:

        |\

        | \

   h    |  \   9 ft

        |   \

        |    \

        |     \

        -------

        6 ft

Here, h represents the height on the wall where the ladder touches. We want to find the angle of elevation θ.

Using the right triangle, we can write:

sin(θ) = h / 9

cos(θ) = 6 / 9 = 2 / 3

We can solve for h using the Pythagorean theorem:

h^2 + 6^2 = 9^2

h^2 = 9^2 - 6^2

h = √(9^2 - 6^2)

h = √45

h = 3√5

So, sin(θ) = 3√5 / 9 = √5 / 3. We can solve for θ by taking the inverse sine:

θ = sin^-1(√5 / 3)

θ ≈ 37.5 degrees

Therefore, to the nearest tenth of a degree, the angle of elevation the ladder makes with the ground is 37.5 degrees.

If sinθ⋅cosθ = 1/2, then the value of sinθ + cosθ = √2

We know that the trigonometric sine function is nothinng but the ratio of the length of the opposite side of angle to that of the hypotenuse in a right triangle.

And cosine function (cos function) is the ratio of the length of the adjacent side of angle to that of the hypotenuse.

Given that  sinθ⋅cosθ = 1/2

2(sinθ⋅cosθ) = 1             .........(1)

We know that trigonometric identity,

sin(2θ) = 2 sinθ cosθ

so equation (1) becomes,

sin(2θ) = 1            

We know that sin(π/2) = 1

Comparing with equation sin(2θ) = 1 we get,

2θ = π/2

θ = π/4          

Using trigonometric table,

sin(π/4) = 1/√2

and cos(π/4) = 1/√2

The value of  sinθ+cosθ would be,

sin(π/4) + cos(π/4)

= (1/√2) + (1/√2)

= 2/√2

= √2

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The complete question is:

If sinθ⋅cosθ=1/2 find the value of sinθ+cosθ

The correct answer is option D. (\(f\) is defined at \(x = 2\))

The rational Function is continuous at a given value if its Denominator is not zero. In this exercise, we proceed to Factor the expression by check the value Denominator for each value of \(x\).

\(f(x) = \frac{x^{2}-x-6}{x^{2}-9}\)

\(f(x) = \frac{(x-3)\cdot (x+2)}{(x+3)\cdot (x-3)}\)

As we can see, \(f\) is not defined for \(x = -3\) and \(x = 3\). Hence, we conclude that right answer is D.

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Answer:

multiply by the reciprocal of 31/6

Step-by-step explanation:

4 and one-third = 4 1/3

5 and StartFraction 1 over 6 EndFraction = 5 1/6

Therefore,

4 1/3 ÷ 5 1/6

= 13/3 ÷ 31/6

To solve the problem, multiply 13/3 by the reciprocal of 31/6

The reciprocal of 31/6 = 6/31

So,

13/3 ÷ 31/6

= 13/3 × 6/31

= (13 * 6) / (3 * 31)

= 78 / 93

= 26/31

hope it helped

3(y-1)=2x+2

3(y-1)/3=2x+2/3

y-1=2x/3+2/3

y=2x/3+2/3+1

y=2x/3+5/3

m=2/3

Answer:

156 bundles

Step-by-step explanation:

Total area of the roof = 2(70 x 30) = 4200 sf  

(4200 sf) / (27sf/bundle) = 155.56 ≈ 156 bundles

Answer:

no solution

Step-by-step explanation:

I really hope this helps you out and enjoy the rest of your day! =D <3

Answer:

$65

Step-by-step explanation:

It has a fee of $15. If each copy is $.25 each and 200 copies are wanted, multiply them together to get 50. Add 50 and 15 to get 65. It cost $65 for 200 copies.

we have

3P23=23*22*21=10,626

answer is option

Answer:

The remainder is 0

Step-by-step explanation:

Using the remainder theorem,plug in the zeros of the factor into the polynomial.

The zeros of the factor—›x-1=0,x=1

Plugging 1 into the polynomial

P(1)=2(1)³+(1)²-2(1)-1=0

In rare instances, the numerical value of the standard deviation might be 0. The standard deviation, defined as the square root of the variance, is a measure of the dispersion of a collection of data. A collection of data's variance is the average of the squared departures from the mean.

The standard deviation represents the average level of variation in your dataset. It informs you how far each number deviates from the mean on average. A high standard deviation implies that values are spread out from the mean, whereas a low standard deviation shows that values are close to the mean. The standard deviation quantifies the data's dispersion around the mean value. It is useful for comparing data sets that have the same mean but a different range. The mean of the following two numbers, for example, is the same: 15, 15, 15, 14, 16 and 2, 7, 14, 22, 30. The second, on the other hand, is plainly more dispersed.

Here,

When all of the data points in a collection are equal, the deviations from the mean are all 0, and so the variance is likewise zero. When the variance is zero, the square root of the variance (the standard deviation) is likewise zero. As a result, the standard deviation can only be 0 if all of the data points in the collection are equal.

In other words, the standard deviation is 0 when there is no fluctuation or dispersion in the data.

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K-Means uses Euclidean distance. The output includes average and maximum distances, separation, and convergence after iterations related to the number of starting seeds.

In the output of a K-Means cluster analysis, "Ave Distance" refers to the average distance between the data points and their assigned cluster centroids.

"Max Distance" represents the maximum distance between any data point and its assigned centroid. "Separation" indicates the distance between the centroids of different clusters, reflecting how well-separated the clusters are.

Convergence in K-Means clustering refers to the point when the algorithm reaches stability and the cluster assignments no longer change significantly.

When the video mentions convergence after 4 iterations, it means that after four rounds of updating cluster assignments and re-computing centroids, the algorithm has achieved a stable result.

The "Number of starting seeds" option determines how many initial random seeds are used for the algorithm, and it can affect the number of iterations needed for convergence. Increasing the number of starting seeds may result in faster convergence as it explores different initial configurations.

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Answer:

\(9 \times 9 - 3 = 81 - 3 = 78\)

Answer:

b

Step-by-step explanation:

is the situation could the expression model.

Answer:

$80

Step-by-step explanation:

If we have four scarves, and each costs $20, we can multiply these two numbers to find the total profit made.

\(20\cdot4\)

2 times 4 is 8, and adding a 0 to that is 80.

Hope this helped!

Answer:

(x,y)=(-2,-1)

Step-by-step explanation:

4x - y = -7: 8x-2y=-14

8x-2y=-14

-8x + 4y = 12

add these two:

2y=-2

y=-1

plug in the y:

-8x-4=12

-8x=16

x=-2

The empirical formula of a compound is the simplest and lowest whole number ratio of the atoms of each element that makes up a compound.

To find the empirical formula from percentages, you need to first calculate the mass of each element present in the compound, based on the percentage of each element. Once you have the mass of each element, divide each mass by the atomic mass of that element to get the number of moles of each element. Then divide each mole by the smallest number of moles to get the mole ratio. This ratio is the empirical formula for the compound.

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Answer:

482

Step-by-step explanation:

3x-5=178+12=82-22x=482

Answer:

18

Step-by-step explanation:

reading from the graph HG =6 units and HI = 3 units so

A= length * with = 6*3 = 18 units²

Answer:

x = -12

Step-by-step explanation:

The x coordinate is the same so it is a vertical line with equation x = -12

Answer:

BC= 3

Step-by-step explanation:

Suppose a line BD is 10 and it has a point C somewhere on the  line. It is given that BC is  3times and CD is 7 times  or algebraically  if we take x as a variable then according to the given information

BC+ CD= BD

3x+ 7x= 10

10x= 10

x= 10/10

x= 1

3x would give 3 (1)= 3

Hence the Line BC = 3

and the line CD= 7

Answer:

R.s 51000

Step-by-step explanation:

I= PTR/100

=120000×10×4.25/100

=51000

hence ,

interest rate is R.s 51000

Answer:

8.3

Step-by-step explanation:

Use the pythagorean theorem: a2 + b2 = c2 a2 would be 24.1 and c2 would be 25.5. square them then subtract a2 from b2. then find the square root of your answer which is 8.3

Yes, it is possible to use our knowledge of rational functions to create a sketch without using a graphing calculator. Rational functions are the quotient of two polynomials and can be written in the form f(x) = P(x) / Q(x). To sketch the graph, we can follow these steps:

1. Identify the domain: Determine the values of x for which the function is undefined, usually when the denominator Q(x) equals zero.

2. Find the x-intercepts: Solve for when the numerator P(x) equals zero.

3. Find the y-intercept: Plug in x=0 into the function and solve for f(0).

4. Identify vertical asymptotes: These occur at the values of x that make the denominator Q(x) equal to zero.

5. Identify horizontal asymptotes: Analyze the degree of the numerator and denominator. If the degree of P(x) is less than Q(x), the horizontal asymptote is y=0. If the degrees are equal, the horizontal asymptote is the ratio of the leading coefficients. If the degree of P(x) is greater than Q(x), there is no horizontal asymptote.

6. Identify any oblique asymptotes: If the degree of the numerator is one greater than the denominator, perform long division or synthetic division to find the oblique asymptote.

7. Determine the behavior of the function around asymptotes and critical points: Analyze how the function approaches the vertical and horizontal asymptotes, as well as any turning points or critical points in the graph.

By following these steps and using your understanding of rational functions, you can successfully create a sketch of the function without the need for a graphing calculator.

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Answer:

B

Step-by-step explanation:

Fip numbers and change both signs when reflecting over y=-x

Answer:

C

Step-by-step explanation:

If you are dealt five cards from an ordinary deck of 52 playing cards, the number of ways can you get a full house is 3,744.

A full house is a hand that contains three of a kind and a pair. For example, three aces and two kings are a full house. To calculate the number of ways to get a full house, use the following formula:

1. First, choose the rank for the three of a kind. There are 13 choices because there are 13 different ranks in a standard deck of cards.

2. Second, choose which three of the four suits for the three of a kind. There are four options for each card, but we must divide by 3! (the number of ways to order three cards) to correct for overcounting. Therefore, there are 4C3 * (3!) ways to pick three cards from four (equal to 4 ways to choose the three of a kind).

3. Third, choose the rank for the pair. This leaves 12 ranks to choose from since two of the 13 have already been used for the three of a kind.

4. Fourth, choose two suits for the pair. The suits for the pair must be different from those used for the three of a kind. There are four options for the first card, three for the second card, but we must divide by 2! to correct for overcounting. There are a total of 4C2 * 2! ways to pick two cards from four (equal to 6 ways to choose the pair).

We multiply these numbers to get the total number of ways to get a full house:

13 × 4C3 × 3! × 12 × 4C2 × 2! = 13 × 4 × 6 × 12 × 6 = 3, 744

Therefore, there are 3,744 ways to get a full house from a standard deck of 52 playing cards.

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Answer:

We are dividing a slab of wood into equal pieces, so the obvious function would be to divide. And how long are the pieces going to be? 1/4 of a foot. so that gives us:

6 ÷ ¼.

Now, when we divide by a fraction, we flip the numerator and denominator and multiply, so the equation will look like:

6 * 4

Solve that, and you'll have your answer.

Step-by-step explanation:

Hope this answer helps you :)

Have a great day

Mark brainliest

The width of the barrier is 1.53×10⁻¹⁴ m

The probability of an electron tunneling through a barrier is given by the equation:

P = (2m/h²) × (E²) × (exp(-2a/h))

where P is the probability of tunneling, m is the mass of the electron, h is Planck's constant, E is the energy of the electron, and a is the width of the barrier.

m =  9.109×10⁻³¹ kg, h = 6.626×10⁻³⁴m² kg/s

Substituting the values given in the problem, we have:

P = (2m/h²) × (E²) × (exp(-2a/h))

2.5% = (2× 9.109×10⁻³¹ / (6.626×10⁻³⁴)) ×  (12.0)² × (exp(-2a/( 6.626×10⁻³⁴)))

We can rearrange this equation to solve for the width of the barrier:

a = -(h/2) × ln(P/(E²× (2m/h²)))

  = -(6.626×10⁻³⁴/2) ×ln(0.025 / (12.0 eV)² × (2×9.109×10⁻³¹  / (6.626×10⁻³⁴)²))

 = 1.53×10⁻¹⁴ m

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