simplify the expression: 8x + 13 - 3x + 9=

The important resonance structures for the given ion must be drawn, showing all lone pairs of electrons, formal charges, double bonds, and electron flow arrows.

Resonance structures are alternative representations of a molecule or ion that differ only in the placement of electrons. They are important in understanding the stability and reactivity of organic compounds. In this case, we are asked to draw the important resonance structures for a specific ion.

To start, we need to identify the ion and its molecular formula. Once we have that information, we can determine the possible resonance structures. Each resonance structure is a valid Lewis structure that obeys the octet rule and maintains the overall charge of the ion.

To draw the resonance structures, we begin by placing the atoms in their correct positions and adding lone pairs of electrons as needed. Next, we identify any double bonds or formal charges present in the original ion.

Using curved arrows, we show the movement of electrons to generate alternative resonance structures. The movement of electrons can involve breaking and forming bonds, as well as the shifting of lone pairs.

By drawing all the important resonance structures, we gain a better understanding of the electron distribution and the stability of the ion. This knowledge is crucial for predicting the reactivity and behavior of the compound.

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Answer:

1st and 3rd options are examples of theoretical probability.i.e.

determining the probability of selecting a king from a deck of cards by dividing the number of kings in the deck by the total number of cards in the deck

determining the probability of selecting a vowel from the word apple by dividing the number of vowels in the word by the total number of letters in the word

Step-by-step explanation:

Theoretical probability is the probability of an event occurring based on mathematical reasoning or analysis, without necessarily conducting any actual experiments or trials. In option A, the probability of selecting a king from a deck of cards is determined by dividing the number of kings in the deck by the total number of cards in the deck. In option C, the probability of selecting a vowel from the word apple is determined by dividing the number of vowels in the word by the total number of letters in the word.

2nd Option is an example of experimental probability because it involves conducting actual trials or experiments to determine the probability of rolling a 5 on a die. 4th Option is also an example of experimental probability because it involves performing an experiment with 10 trials to determine the probability of picking a red candy out of a bag with different color candies.

Answer:

115 lbs = 52.16 kilograms

Step-by-step explanation:

115 pounds is a little over 52kg

Answer:

\(\huge\boxed{\dfrac{4}{7};\ \dfrac{5}{8};\ 0.7;\ 72\%}\)

Step-by-step explanation:

Two ways.

1. Convert to the decimal:

\(\dfrac{4}{7}=4:7=0.\overline{571428}\\\\\dfrac{5}{8}=5:8=0.625\\\\0.7=0.7\\\\72\%=\dfrac{72}{100}=0.72\)

therefore

\(0.\overline{571428}<0.625<0.7<0.72}\)

\(\dfrac{4}{7};\ \dfrac{5}{8};\ 0.7;\ 72\%\)

2. Convert to the fractions with common denominator.

\(\dfrac{4}{7};\ \dfrac{5}{8}\\\\0.7=\dfrac{7}{10}\\\\72\%=\dfrac{72}{100}=\dfrac{18}{25}\)

\(LCD=7\cdot8\cdot5\cdot5=1400\\\\\dfrac{4}{7}=\dfrac{4\cdot200}{7\cdot200}=\dfrac{800}{1400}\\\\\dfrac{5}{8}=\dfrac{5\cdot175}{8\cdot175}=\dfrac{875}{1400}\\\\0.7=\dfrac{7}{10}=\dfrac{7\cdot140}{10\cdot140}=\dfrac{980}{1400}\\\\72\%=\dfrac{72}{100}=\dfrac{72\cdot14}{100\cdot14}=\dfrac{1008}{1400}\\\\\dfrac{800}{1400}<\dfrac{875}{1400}<\dfrac{980}{1400}<\dfrac{1008}{1400}\)

therefore

\(\dfrac{4}{7};\ \dfrac{5}{8};\ 0.7;\ 72\%\)

Answer:

\(n=-\frac{16}{3} (or) -5\frac{1}{3}\) (or) -5.3 repeating

Anwser Is 9.22. because A squared Plus B squared is equal to C squared.

Answer:

infinite number of solutions

Step-by-step explanation:

x - 2y = 1 ( add 2y to both sides )

x = 1 + 2y → (1)

3x - 6y = 3 → (2)

substitute x = 1 + 2y into (2)

3(1 + 2y) - 6y = 3 ← distribute parenthesis on left side and simplify

3 + 6y - 6y = 3 ( subtract 3 from both sides )

0 = 0 ← true statement

this indicates the system has an infinite number of solutions

Answer:

The slope is 3

Step-by-step explanation:

it is 3 up and 1 across, which is 3/1 = 3

Answer:

3

Step-by-step explanation:

Look at the two lower dots shown on the line.

slope = rise/run

The vertical distance from the lower point to the higher point is 3. That is the rise.

The horizontal distance from the lower point to the higher point is 1. That is the run.

slope = 3/1 = 3

Answer: 3

Answer: NONE OF THE ABOVE jk.......the answer is  

The distance between the two new numbers is the same as a + (-b)

Step-by-step explanation:hope this helps:) (i took the checkpoint)

Answer:

25,36,49,64,81,100

................................

Answer:

Your answer is 1, 4, 9, 16, 25, 36, 49, 64, 81, 100.

Step-by-step explanation:

1 - 4  

+ 3

4 - 9

+ 5

9 - 16

+ 7

+9, +11, +13, +15, +17, +19...

Answer:

Basically you are asked to add 5 hours to each time on the traditional clock face, which as you will learn much later in school is arithmetic modulo 12, although you only need this once).

6, 11, 4 !

The next three terms in the given sequence will be 6, -1, and 4.

A sequence is a list of elements that have been ordered in a sequential manner, such that members come either before or after.

The sequence is given below.

5, 10, 3, 8, 1, ...

The sequence is formed first add 5, then subtracting 7. Then again add 5 then subtract 7. Then the sequence pattern is given as,

5 ⇒ 5 + 5 = 10

10 ⇒ 10 - 7 = 3

3 ⇒ 3 + 5 = 8

8 ⇒ 8 - 7 = 1

1 ⇒ 1 + 5 = 6

6 ⇒ 6 - 7 = - 1

-1 ⇒ - 1 + 5 = 4

The next three terms in the given sequence will be 6, -1, and 4.

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The probability of getting three of the same symbol in a row depends on the specific rules of the slot machine and the distribution of symbols on the reels.

To determine the probability of getting three of the same symbol in a row, we need to know the total number of possible outcomes and the number of favorable outcomes. The total number of possible outcomes is determined by the number of symbols available on each reel and the number of reels.

For example, if there are three reels and each reel has six different symbols, then the total number of possible outcomes is \(6^3\)= 216.

To calculate the number of favorable outcomes, we need to consider the specific combination of symbols that result in three of the same symbol in a row. Without knowing the specific distribution of symbols on the reels or any specific rules of the slot machine (such as the presence of wild symbols or special features), it is not possible to determine the number of favorable outcomes.

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A slot machine offers up six different symbols: cherry, banana, diamond, 7, BAR, and clover. Assuming the slot machine has three reels and each reel has an equal distribution of symbols, we can calculate the probability of getting three of the same symbol in a row.

The conjecture that describes the pattern in the sequence is current term is 2 added to the previous term and the next term is 10

The sequence is given as:

0, 2, 4, 6, 8

In the above sequence, we can see that each current term is 2 added to the previous term

i.e.

Tn = 2 + Tn-1

Using the above conjecture, we have

Next term = 8 + 2

Evaluate

Next term = 10

Hence, the conjecture that describes the pattern in the sequence is current term is 2 added to the previous term and the next term is 10

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Answer:

The answer is -2 points per question

:)

For those in need of an explanation, she missed 11 problems and got 22 points taken off. Divide 22 by 11 and you get two.

I hope you all found this helpful and if you need a better explanation or have a question, feel free to comment down below and ill get back to you as soon as possible. :)

Answer:

No solution.

Step-by-step explanation:

5(3x-2)=10x-2+5x

15x-10=10x+5x-2

15x-10=15x-2

15x-15x-10=-2

0-10=-2

-10=-2

no solution

solution

original price = final price+ decrease percent × final price

original price = $90 +80% ×$90

original price = $90+80/100 ×$90

original price= $90+$72

original price= $162

Hyperkalemia is a medical condition that refers to an elevated level of potassium in the blood.

This condition can be caused by several factors, including kidney disease, certain medications, and hormone imbalances. Symptoms of hyperkalemia can range from mild to severe, depending on the level of potassium in the blood.

In a 60-year-old female diagnosed with hyperkalemia, the most likely symptom that would be observed is muscle weakness. This is because high levels of potassium can interfere with the normal functioning of muscles, leading to weakness, fatigue, and even paralysis in severe cases.

Other symptoms that may be observed in hyperkalemia include nausea, vomiting, irregular heartbeat, and numbness or tingling in the extremities. Treatment of hyperkalemia typically involves addressing the underlying cause of the condition, as well as managing symptoms through medication and lifestyle changes.

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The orthogonal trajectories of the family of circles x^2 + y^2 = a are given by the differential equation y = -x(dy/dx), where (x, y) represents a point on the orthogonal trajectory.

To find the orthogonal trajectories of the family of circles given by the equation x^2 + y^2 = a, where "a" is a constant, we can follow these steps:

Step a: Find the differential equation representing the family of circles.

Differentiating the equation x^2 + y^2 = a implicitly with respect to x, we get:

2x + 2y(dy/dx) = 0.

Step b: Find the slope of the tangent line to the circles.

Rearranging the equation obtained in Step a, we have:

dy/dx = -x/y.

Step c: Find the differential equation representing the orthogonal trajectories.

Since orthogonal trajectories have perpendicular slopes to the family of circles, the slope of the tangent line to the orthogonal trajectories will be the negative reciprocal of the slope of the circles. Therefore, the slope of the tangent line to the orthogonal trajectories is y/x.

Differentiating this expression implicitly with respect to x, we get:

(dy/dx) = -y/x^2.

Rearranging the equation obtained in Step c, we have:

y = -x(dy/dx).

This equation represents the differential equation for the orthogonal trajectories of the family of circles x^2 + y^2 = a.

In summary, the orthogonal trajectories of the family of circles x^2 + y^2 = a are given by the differential equation y = -x(dy/dx), where (x, y) represents a point on the orthogonal trajectory.

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The number of terms in the algebraic expression 6y + 14 is 2 terms

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

6y + 14

Consider an expression given as

ax + b

The number of terms in the expression is 2 and the terms are ax and b

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

6y + 14 has 2 terms

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Complete question

Identify the number of terms and then the resend themselves for each algebraic expression

6y + 14

On solving the provided question, we can say that - so, percentage - 400/500 X 100 = 80%

A percentage in mathematics is a figure or ratio that is stated as a fraction of 100. The abbreviations "pct.," "pct," and "pc" are also occasionally used. It is frequently denoted using the percent symbol "%," though. The amount of percentages has no dimensions. With a denominator of 100, percentages are basically fractions. To show that a number is a percentage, place a percent symbol (%) next to it. For instance, if you correctly answer 75 out of 100 questions on a test (75/100), you receive a 75%. To compute percentages, divide the amount by the total and multiply the result by 100. The percentage is calculated using the formula (value/total) x 100%.

here,

total is 500

obtained is 400

so, percentage - 400/500 X 100 = 80%

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Explanation:

Plug in x = 3 to find that f(x) = 3/x outputs f(x) = 1

This shows (x,y) = (3,1) is on the function curve. This means the curve has some portion of it in the upper right quadrant.

This narrows the answer choices between B and D.

Now try x = -3 to find that f(-3) = -1

So (-3,-1) is another point on the curve.

This rules out choice D, and means choice B is the final answer.

Use something like a TI83/84, Desmos, or GeoGebra to verify the answer.

Answer:

8.33

Step-by-step explanation:

1hr=60 minutes

?hr = 500 minutes

To find how many hours, divide 500 by 60

500/60 = 8.33

500 minutes = 8.33 hours

Answer:

y=-4x+8

Step-by-step explanation:

Hi there!

We are given the line y=-4x+1, and we want to write the equation of the line that is parallel to that line and that also passes through the point (2, 0)

Parallel lines have the same slope, so it makes sense to find the slope of the line y=-4x+1

The line is written in the format y=mx+b, where m is the slope and b is the y intercept.

As -4 is in the place of where m should be, the slope of the line is -4.

It's also the slope of the line parallel to it.

We can write the slope of the new line in slope-intercept form as well; this is the line so far, after substituting -4 as m:

y=-4x+b

Now we need to find b, which is the value of the y intercept

Remember that are given the point (2,0), which we can use to help solve for b; substitute 2 as x and 0 as y.

0=-4(2)+b

Multiply

0=-8+b

Add 8 to both sides

8=b

Substitute 8 as b into the equation:

y=-4x+8

Hope this helps!

ANSWER. My answer might be wrong also.

Step-by-step explanation:

According to given table we have pairs of points:

The rate of change is:

or

It is 2.25 and the meaning is:

The advantages of writing in standard form include :

Standard form, also known as scientific notation, is a way of writing very large or very small numbers in a compact way. It is used in many fields, including science, engineering, and mathematics.

Therefore, standard form offers a more compact way of writing out the full number, and it is also easier to compare this number to other numbers in standard form.

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