Select the correct answer from each drop-down menu. consider this quotient. the simplest form of this quotient has a numerator of and a denominator of _______. the expression does not exist when ______.

Answers

Answer 1

The simplified form of the given expression has a numerator of (x + 9)(2x + 1) and the denominator of (x + 7) and the expression does exist when (x = 9) and this can be determined by factorizing the given expression.

What is factorizing?

By identifying the biggest factors that the terms in the equation have in common, factoring is a technique used in mathematics to simplify algebraic expressions.

Given :

Expression - [tex]\frac{3x^2 - 27x}{2x^2+13x-7}[/tex] ÷ [tex]\frac{3x}{4x^2-1}[/tex]

First, factorize the expression, [tex]4x^2-1[/tex]

So, [tex]4x^2-1[/tex] = [tex](2x-1) (2x+1)[/tex]

Now, factorize the equation: [tex]2x^2+13x-7[/tex]

[tex]2x^2+13x-7[/tex] = [tex]2x^2+14x -x -7[/tex]

                     = [tex]2x(x+7) -1(x+7)[/tex]

                     = [tex](2x-1) (x+7)[/tex]

Now, factorize the equation: [tex]3x^2-27x[/tex]

So, [tex]3x^2-27x[/tex] = [tex]3x(x-9)[/tex]

Now, substitute the factorized terms in the given expression:

= [tex]\frac{3x(x-9)}{(2x-1) (x+7)}[/tex] ÷ [tex]\frac{3x}{(2x-1) (2x+1)}[/tex]

= [tex]\frac{(x+9) (2x+1)}{(x+7)}[/tex]

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The complete question is as follows:

Select the correct answer from each drop down menu. The simplest form of this quotient has a numerator of... and a denominator of.... The expression does exist when x=......

Select The Correct Answer From Each Drop-down Menu. Consider This Quotient. The Simplest Form Of This

Related Questions

what time will it be in 2 hours 30 minutes . if I went to work at 11:30 am and I clock out in 2 hours 30 minutes but what time will it be in 2 hours 30 minutes ​

Answers

Answer:

I'm pretty sure it would be 3:00

Step-by-step explanation:

I could be wrong tho-

Out of 400 plants sold daily at a nursery, 90% of them have flowers. How many of the plants have flowers?

Answers

Answer: 360 plants

Step-by-step explanation:

90% is equivalent to 0.90.
You multiply 0.90 and get your answer of 360.

Two perpendicular lines intersect at K(-2,-5). One line has equation y = -5/3x-25/3. what is the equation of the other line?

Answers

Answer:

It is y = 3/5x - 19/5

Step-by-step explanation:

Perpendicular lines have negative reciprocal slopes. Thus, the slope is 3/5x. Plug in -2 as x and solve for the intercept. It ii -19/5.

Min receives an average score of 7 after completing 5 math tests. If she has another test coming up, find what mark she must gain to raise her average to 75.

Answers

Min needs to gain 80 marks to raise her average to 75.

What is Average number?

Average number is got from sum of all numbers divided by the number of values.

Why we use average value?

Average value is used to compare among different quantities of same terms.

given, Min receives an average score 70 from 5 math test.

let she needs to gain X in her 6th test to obtain an average of 75 from the total six test.

she gained average 70 from 5 test

if average is 75 then

75 = (X+ 70)/2

X=80

hence, in the 6th test she needs to gain 80 marks.

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Solve for x . Round to the nearest tenth, if necessary.

Answers

Answer: 52.5°

Step-by-step explanation:

sin59 = 45/x

sin59(x) = 45

x = 45/sin59 = 52.5°

what is 6 plues 9 i need it plesae.

Answers

6️⃣9️⃣⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

The answer to the question 6+9 is 15

∠ABC and ∠KLC form a linear pair with m∠ABC = 74° and m∠KLC = x°.

Answers

Answer:

106

Step-by-step explanation:

A linear pair adds to 180

180 - 74 = 106

A full pond containing 625 gallons of water begins losing its water at a rate of 20% per week. If the pond now contains 320 gallons of water, how many weeks has it been since the pond was at full capacity?

(Use the digits 0 – 9 to enter a number. Use a decimal point only if necessary.)

Answers

Using an exponential function to represent the exponential decay, it will take approximately 4 weeks to reach 320 gallons

Exponential Equation

An exponential function is a mathematical function in the form f (x) = ax, where “x” is a variable and “a” is a constant which is called the base of the function and it should be greater than 0.

To solve this problem, we have to write an exponential equation to calculate the exponential decay.

Data;

A = 320P = 625r = 20% = 0.2t = ?

A = P(1 + r)⁻ˣ

320 = 625(1 + 0.2)⁻ˣ

x = 3.67

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Monica has $50 to spend at the video arcade. If each game costs $0.25, which of these graphs shows how much
money she will have after x games?

Answers

It will be 50/0,25=x

Answer:

A

Step-by-step explanation:

If Monica has $50 dollars to spend on the video arcade, and each game costs $0.25 then we can use an equation that looks something like this:

total = amount of money × cost of one game

50 × 0.25 = 200

Now look at the graphs.

The graph that best matches this equation is A.

Josephine earns a salary of $560.00 per week, plus a commission of 10% on all sales. Last week, she sold $843 worth of goods. How much was she paid?

Answers

The amount that Josephine will be paid is $644.30.

How much was Josephine paid?

A percentage is a value or ratio that may be stated as a fraction of 100. If we need to calculate a percentage of a number, we should divide it's entirety and then multiply it by 100. The percentage therefore refers to a component per hundred.

In this situation, Josephine earns a salary of $560.00 per week, plus a commission of 10% on all sales and she sold $843 worth of goods.

The amount she'll be paid will be:

= $560 + (10% × $843)

= $560 + $84.3

= $644.30

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Solve each system by elimination: 7x+3y=-1 4x+y=3

Answers

Using elimination method, the solution to the system of equation is as follows:

x = 2 and y = -5

How to solve system of equation?

System of equation can be solved using different method such as elimination method, substitution method and graphical method. Let's use elimination method to solve the system of equation as follows:

7x + 3y = - 1

4x + y = 3

multiply equation(ii) by 3

Hence,

7x + 3y = - 1

12x + 3y = 9

subtract equation(i) from equation(ii)

5x  = 10

x = 10 / 5

x = 2

Let's find y

7x + 3y = - 1

7(2) + 3y = -1

14 + 3y = -1

3y = -15

y = -15 / 3

y = -5

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Which shows the correct substitution of the values a, b, and c from the equation 0 = – 3x2 – 2x + 6 into the quadratic formula?

Quadratic formula: x = StartFraction negative b plus or minus StartRoot b squared minus 4 a c EndRoot Over 2 a EndFraction

Answers

An expression which shows the correct substitution of the values a, b, and c from the equation 0 = – 3x2 – 2x + 6 into the quadratic formula is: expression A. Therefore, the correct answer option is A.

What is a quadratic equation?

A quadratic equation can be defined as a mathematical expression (equation) that can be used to define and represent the relationship that exists between two or more variable on a graph. In Mathematics, the standard form of a quadratic equation is given by;

ax² + bx + c = 0

Mathematically, the quadratic formula is modeled or represented by this mathematical expression:

[tex]x = \frac{-b\; \pm \;\sqrt{b^2 - 4ac}}{2a}[/tex]

From the information provided, we have the following values;

0 = -3x² - 2x + 6

Where:

a = -3

b = -2

c = 6

Substituting the values into the quadratic formula, we have;

[tex]x = \frac{-(-2)\; \pm \;\sqrt{(-2)^2 - 4(-3)(6)}}{2(-3)}\\\\x = \frac{2\; \pm \;\sqrt{4^2 - 4(-3)(6)}}{2(-3)}[/tex]

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To prove that the triangles are similar by the SAS
similarity theorem, it needs to be shown that
Ozcazc
OC 2G
O AC-H
BC
O AC-BE
HI

Answers

It needs to be shown that <W = <H by the SAS congruent theorem

How to determine the additional information?

The question is added as an attachment

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

Triangles = IWO, and IHOGiven theorem = SAS

The SSS congruent theorem implies that the corresponding sides of the triangles in question and the angles between them are congruent

From the question, we can see that the following corresponding sides on the triangles have the same mark

W O and H O

AO and AO

This implies that these sides are congruent sides

For the triangle to be congruent by SAS, the following sides must also be congruent

Angle W must be congruent to Angle H

Hence, the additional info is <W = <H

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Complete question

To prove that the triangles are similar by the SAS similarity theorem, it needs to be shown that____

For this function, what is the average rate of change over the interval 3.5 ≤ x ≤ 4?

Answers

The average rate of change for 3.5 ≤ x ≤ 4 is 2[f(4) - f(3.5)]

What is Average rate of change?

It is the average amount by which the function changed per unit throughout that time period. It is calculated using the slope of the line linking the interval's ends on the graph of the function.

given:

Interval: 3.5 ≤ x ≤ 4

Now, For average rate

= [f(4) - f(3.5)]/(4 - 3.5)

= 2[f(4) - f(3.5)]

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Solve the system of equations using elimination:
-5x + 8y = -6.
-
- 5y = -9 and

Answers

Answer:

x=102/25 y=9/5

Step-by-step explanation:

For fixed population standard deviation and level of significance, the minimum sample size needed to guarantee a given margin of error ......... as the margin of error increases.
a. stays the same
b. increases
c. decreases

Answers

The minimum sample size needed to guarantee a given margin of error increases , the correct option is (b) .

What is Margin Of Error ?

The term margin of error is defined as an estimate of a small sample that is drawn from a relatively large population data.

the margin of error is usually governed by the parameters such as the standard deviation , sample size and desired confidence level.

to find missing term in the given statement , let us consider the values ,

where σ ⇒ Standard deviation for population

and m as "Margin of error"  and Z as "Empirical value of Z-score" at a given confidence level .

So , minimum sample size for given confidence level is given by

⇒ (Z×σ)²/m²

from above formula we can conclude that minimum sample size is directly related to population's standard deviation.

Therefore, the minimum sample size required would "increase" with the increase in population "standard deviation" .

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through (4,-9) perpendicular to 8y=x-16

Answers

Answer:

y = -8x + 23

Step-by-step explanation:

8y=x-16

we need to turn this into slope-intercept form by dividing 8 on both sides

y = x/8 - 2

to make a line perpendicular from another, we must make sure the slope is the negative reciprocal of the original line.

Right now, it's the same as the original. To make it a negative reciprocal, switch the places of the denominator and numerator and flip the signs

-8x is the negative reciprocal of x/8

Does it go through (4,-9)? No.

To make sure it goes through 4,-9, we change it's y-intercept.

Plug in the coordinate given (4,-9) in the y = -8x + b ( we removed -2 since it's not the right answer.

y = -8x + b

(-9) = -8(4) + b

-9 = -32 + b

-9 +32= -32 + b +32

23 = b

plug in b and we get our answer

y = -8x + 23

find a equation line perpendicular to y-8=-2x that passes through the point (8,-5)

Answers

Answer:

Step-by-step explanation:

y = -2x + 8

perp.: 1/2

y + 5 = 1/2(x - 8)

y + 5 = 1/2x - 4

y = 1/2x - 9

The results of a series of surveys revealed a population with a mean of 15 and a standard deviation of 1.88. If each survey has a sample size of 70, which value falls within the interval where 95% of the sample means occur?
A) 15.66
B) 15.49
C) 14.96
D) 14.34

Answers

If each survey has a sample size of 70, a value which falls within the interval where 95% of the sample means occur is: C) 14.96.

What is a confidence interval?

In this scenario, the confidence interval at 95% can be represented by this mathematical expression p - E < p < p + E

Based on the parameters provided, we would determine both the lower limit and upper limit for the interval where 95% of the sample means occur as follows;

Lower limit = 15 - 1.88/√70

Lower limit = 15 - 0.23

Lower limit = 14.77

For the upper limit, we have:

Upper limit = 15 + 1.88/√70

Upper limit = 15 + 0.23

Upper limit = 15.23

For 95% of the sample means to occur, the confidence interval is given by;

Confidence interval = (14.77, 15.23)

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At the Wheatley School, the probability that a student takes Math 8 and Technology is 0.12. The probability the student takes Math 8 is 0.16. Find the probability that the student takes technology given that he is taking Math 8.

Answers

The probability that the student takes technology given that he is taking Math 8 is 0.075.

What is conditional probability?

Conditional probability is a term used in probability theory to describe the likelihood that one event will follow another given the occurrence of another event.

Here, we have

Given:

The probability that a student takes Technology and Math 8 is 0.012.

P(Technology and Math 8) = 0.012

The probability that a student takes Math 8 is 0.16.

P(Math 8) = 0.16

We have to find the probability that a student takes Technology given that the student is taking Math 8

we use conditional probability

P(Technology|Math 8) = P(Technology and Math 8)/P(Math 8)

P = 0.012/0.16

P = 0.075

Hence, the probability that the student takes technology given that he is taking Math 8 is 0.075.

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question in the image below!!!!!!

Answers

Part a: The significance of the piece-wise function is define.

Part b: r(t) be the total amount of snow in cubic ft. is calulated.

Part c: Total volume of the ice is not removed.

Define the term rate of change of volume?The term "rate of change" (ROC) describes the rate which something transforms over time.The indicator that demonstrates how much a volume tendency is developing either in the up or down direction is the volume rate of change.

For the given question, the rate function is given as;

f(t) = { 0, 0 ≤ t < 6 ,

       125, 6 ≤ t < 7

       108, 7 ≤ 9  }

Part a: The significance of the piece-wise function is-

f(t) = { 0, 0 ≤ t < 6 } define the volume of ice per hour accumulated  in between 0 to 6 hours is 0 cubic ft/hr.f(t) = {125, 6 ≤ t < 7 } define the volume of ice per hour accumulated  in between 6 to 7 hours is 125 cubic ft/hr.f(t) = { 108, 7 ≤ 9} define the volume of ice accumulated  per hour in between 7 to 7 hours is 108 cubic ft/hr.

 

Part b: r(t) be the total amount of snow in cubic ft.

r(t) = { 0, 0 ≤ r < 6 } define the volume of ice accumulated  in between 0 to 6 hours is 0 cubic ft: 0 cubic ft.f(t) = {125, 6 ≤ t < 7 } define the volume of ice accumulated  in between 6 to 7 hours is 125 cubic ft. is 62.5 cubic ftf(t) = { 108, 7 ≤ 9} define the volume of ice accumulated  in between 7 to 7 hours is 108 cubic ft. is 54 cubic ft.

Part c: total ice accumulated is;

62.5 ft + 54 ft. = 116.5 cubic ft.

Total volume of the ice accumulated = 367.5 cubic ft.

Thus, no total volume of the ice is not removed.

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Suppoe that the concentration of a bacterial ample i 100,000 bacteria per millimeter. If the concentration double every three hour how long will it take for the concentration to reach 350,000 material per millimeter?

Answers

The time t = 3.4209 will it take for the concentration to reach 350,000 material per millimeter.

How do you calculate hours and minutes?

In an hour, there are 60 minutes. Divide the number of minutes by 60 to convert it to hours. For instance, 120/60=2 means that 2 hours are equal to 120 minutes.

What is millimeter?

The millimeter, abbreviated mm in the International System of Units (SI), or millimeter, abbreviated mm in the American spelling, is a unit of length that is one thousandth of a metre long, the SI base unit of length. As a result, a metre is made up of 1000 millimeters.

We are going to use formula

y = a * e ^ (b * t)

a and b are constants and t is for time.

Initially there are 100,000 bacteria, so;

100000 = a * e ^ (b * 0)

100000 = a * 1

a = 100000

given condition is that the concentration doubles every 3 hours so

300000 = a * e ^ (b * 3)

As a equals to 100,000

e ^ (b * 3) = 3

b * 3 = ln 3

b = (ln 3) / 3

b = 0.3662

now we have to find value of the time when concentration of bacteria reaches to 350,000:

350000 = 100000 * (e ^ 0.3662 * t)

3.5 = e ^ 0.3662* t

ln 3.5 = 0.3662* t

t = 1.2527 / 0.3662

t = 3.4209

That is the required value of time

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The function rule for this graph is

Answers

Answer:

Step-by-step explanation:

(0, 2) (4, 0)

(0 - 2)/(4 - 0) = -2/4 = -1/2

y - 2 = -1/2(x - 0)

y - 2 = -1/2x + 0

y = -1/2x + 2

A car wash makes $7 profit p per car, resulting in the equation of the total T; T = 7p. If the car wash made $147, how many cars were washed?

Answers

1 car = $7
T= $147

x * car = T
x * 7 = 147
x = 147/7
x = 21
There were 21 cars washed.

calculate the p-value associated with the null hypothesis that 50% of the students at eastern work more than 10 hours a week.

Answers

The p-value associated with the null hypothesis = 0.05

Fail to reject the null hypothesis. The​ P-value is greater than the level of significance.

Candice should reject the null hypothesis as the 50% confidence interval does not contain 10 hours

Small p-values offer proof that the null hypothesis is false. The stronger the evidence is against the null hypothesis, the smaller (closer to 0) the p-value. The null hypothesis is rejected if the p-value is less than or equal to the chosen significance level; otherwise, it is not.

You have the Hypothesis that "students study less than 10 hours, on average, per week"

Symbolically:

H₀:μ≥10hours

H₁:μ<10hours

The significant level for this case study is 50% - 0.05. If the results gotten is less than the significance level, we reject the null hypothesis, but if greater, we fail to reject the null hypothesis.

The p-value of 0.05 is one of the most often used numbers. When the calculated p-values are less than 0.05, the faulty hypothesis is considered to be fraudulent or invalid (subsequently the name invalid theory). Additionally, the faulty theory is taken into consideration to be clear if the value is greater than 0.05.

The edge for that likelihood in our model is 0.05, and it represents the probability that our results will be similar to the invalid speculation. Therefore, if the calculated p-value is less than 0.05, it actually means that there is a very little likelihood that we would have the same results as the flawed hypothesis. Additionally, if the p-value is greater than 0.05, there is a very strong probability that the results will be similar to the flawed speculation, leading us to conclude that it is legitimate.

Therefore,

Fail to reject the null hypothesis. The​ P-value is greater than the level of significance.

The p-value associated with the null hypothesis = 0.05

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A regular polygon has its interior angles all equal to 171 Find the number of sides of the polygon.​

Answers

The measure of the interior angles of a polygon is determined by the formula ((n - 2)180)/n = interior angle

measure

which is more likely rolling a total of 8 when two dice are rolled or rolling a total of 8 when thre dices are roled

Answers

Answer: Two dice

Step-by-step explanation:

For the two dice, there are 5 possible: (6, 2);(5, 3);(4, 4);(3, 5);(2, 6)

So two dice, the probability is 5/36 = 30/216

For three dice, the number of favorable cases is 21

The probability is 21/216

So the two dice are more likely

What is the equation for the graph shown?

Answers

The linear equation on the graph shown is:

y = (2/3)*x + 4

What is the equation on the graph?

We can see that we have a linear equation on the graph, remember that a general linear equation is:

y = a*x + b

Where a is the slope and b is the y-intercept.

On the graph, we can see that the line intercepts the y-axis at y = 4, then the y-intercept is b = 4

y = a*x + 4

To find the slope we can use another point on the line, for example, we can see that (-6, 0) is also on the line, replacing these values in the linear equation above we will get:

0 = a*-6 + 4

6a = 4

a = 4/6 = 2/3

Thus, the line is:

y = (2/3)*x + 4

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please help need an answer ASAP!!!!!!!!!!!!

Answers

Answer:

1/9

Step-by-step explanation:

The y intercept of a line is when x = 0

y = 1/9

Answer:

y = 1/9

Step-by-step explanation:

y = -10x + 1/9

Substitute 0 for x

y = -10 x 0 +1/9

-10 x 0 = 0

y = 1/9

Point QQ is located at (3,-1)(3,−1) on the coordinate plane. Point QQ is reflected over the yy-axis to create point Q'Q ′ . What ordered pair describes the location of Q'?Q ′ ?

Answers

The ordered pair that describes the location of Q' is (-3, -1)

How to determine the ordered pair that describes the location of Q?

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

Point Q = (3, -1)

This point can be represented as

(x, y) = (3, -1)

Also, from the question, we have the transformation to be:

Point Q is reflected over the y-axis

Mathematically, this can be expressed as

(x, y) = (-x, y)

So, we have the following representation

Point Q' = (-3, -1)

Hence, the image is (-3, -1)

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What type of transformation occurred for each image?A (4,5) --> A (-4,-5) "Space Debris"(excerpted and adapted)In the folktale "Chicken Little," the title character becomes convinced the sky is falling when an acorn falls on her head. While she is demonstrably wrong in the story, in reality objects from outer space do fall to Earth. On average, a total of 200-400 tracked objects enter Earths atmosphere every year. [A] Thankfully, human populations are rarely affected by these falling objects. This is because only a relatively small percentage of Earths total surface area is inhabited. So, any objects that do not burn up and disintegrate during atmospheric reentry are likely to fall into the open ocean or 46on a land area that is sparsely populated.The U.S. federal agencies charged with monitoring near-Earth space estimate there are over 170 million pieces of space debris orbiting the Earth. [B] Space debris is the collection of man-made objects like old 47satellites, spent rocket stages, and fragments, from disintegration, erosion, and collisions. The majority of these objects are tiny, but roughly 30,000 are larger than a softball. Only about 1,000 are actual spacecraft.The smallest bits of space debris cannot even be detected by 48censors. Despite their lack of mass, 49spacecraft are at risk from these tiny pieces of debris. [C] This is because objects orbit the Earth at extremely high velocity. [D] 50Consequently, a seemingly insignificant bit of metal can easily punch through the protective covering on satellites or spacecraft.There have been two major space collisions involving debris. The first occurred in 1996 when a French military reconnaissance satellite Cerise was struck by debris from a French rocket that had exploded a decade earlier. In 2009, the first collision 51of two intact satellites occurred when Iridium 33, a U.S. satellite, collided with the 52extinct Russian Cosmos-2251 at a speed of over 26,000 mph. 53This produced over 2,000 new pieces of space debris. A piece of space debris from the collision passed close to the International Space Station in March 2012. The crew took shelter in two docked Soyuz rendezvous spacecraft until the debris passed.54In 1978, NASA scientist Donald Kessler proposed a worst-case scenario for space collisions. This 55scenario, that is now known as the Kessler syndrome, involves debris created from a collision impacting other satellites. Impact follows impact like a row of dominos, eventually resulting in mass satellite destruction.In an effort to prevent the Kessler syndrome, many satellite mission teams safely maneuver retired satellites back into Earths atmosphere so that one of two things occur. For satellites orbiting close to Earth, operators lower the orbit of a decommissioned satellite so that 56they will naturally re-enter the atmosphere within 25 years. As the satellite begins to fall back toward Earth and loses altitude, the compression and friction in the dense region of the atmosphere closest to the Earth 57generate intense heat that breaks up and burns most of the satellite machinery.If the satellite has enough fuel, it can be directed to fly back through the atmosphere and crash into a predetermined location in the Pacific Ocean. This place has several names, including Point Nemo (Latin for "no one") and the Oceanic Pole of Inaccessibility. These names are 58felicitous: The nearest land mass is 1,450 nautical miles away.46 A. NO CHANGE B. an area of sparsely populated land C. a land area that is sparsely populated D. onto a sparsely populated land area An attorney was employed by the United States Department of Health and Human Services in a regional office located in a tobacco-growing state. A labor contract between the agency and the clerical workers union contained a policy providing for termination of union employees only for certain specified grounds. The attorney, however, was not a member of the union and not covered by such a policy. The attorney was angered by the regional director's refusal to adopt a no-smoking policy for employees and visitors in the office. She posted a notice in the employee cafeteria ridiculing what she called the hypocrisy of an agency promoting health issues and nonsmoking programs while refusing to provide its employees with those same opportunities. The notice prompted a great deal of debate among the employees and was brought to the attention of the regional director, who was very displeased.Which of the following statements is most accurate regarding the director's right to dismiss the attorney?A The attorney has a liberty interest in the exercise of her First Amendment rights that entitles her to a hearing to contest the grounds of her dismissal.B The attorney has a property interest as a public employee that precludes her from being fired without notice and an opportunity to respond.C The attorney has no right to a hearing because her statements were not an expression of views on public issues.D The attorney has both a liberty interest and a property interest that entitles her to a pre-termination evidentiary hearing.