simplify:2/x-1 -x/x^2+1 -1/x+1
To simplify the expression 2/(x-1) - x/(x^2+1) - 1/(x+1), we need to find a common denominator for all three terms.
The common denominator for the three terms is (x-1)(x^2+1)(x+1). We can rewrite each term using this denominator as follows:
2/(x-1) = 2*(x^2+1)*(x+1) / [(x-1)(x^2+1)(x+1)]
x/(x^2+1) = x*(x-1)*(x+1) / [(x-1)(x^2+1)(x+1)]
1/(x+1) = (x^2+1) / [(x-1)(x^2+1)(x+1)]
Now, we can combine the three terms by subtracting the second and third terms from the first, and simplify as follows:
2*(x^2+1)*(x+1) / [(x-1)(x^2+1)(x+1)] - x*(x-1)*(x+1) / [(x-1)(x^2+1)(x+1)] - (x^2+1) / [(x-1)(x^2+1)(x+1)]
= [2*(x^2+1)*(x+1) - x*(x-1)*(x+1) - (x^2+1)] / [(x-1)(x^2+1)(x+1)]
= [2x^3 + 2x - x^3 + x^2 - x^2 - 1] / [(x-1)(x^2+1)(x+1)]
= (x^3 + 2x - 1) / [(x-1)(x^2+1)(x+1)]
Therefore, the simplified expression is (x^3 + 2x - 1) / [(x-1)(x^2+1)(x+1)].
I’ll give brainliest Write an inequality that represents this situation below.
Your suitcase for vacation will fit at most 11 outfits you already have 5 packed
Answer:
Let x be the number of additional outfits.
5 + x < 11
Three corners of a rectangular city block are located at (2,2), (2,-4) and (-5,-4) on a coordinate plane. What are the coordinates of the fourth corner
Answer:
(-11,8)
Step-by-step explanation:
To find the coordinates of the fourth corner of the rectangular city block, we need to use the fact that opposite sides of a rectangle are parallel and equal in length.
Let's start by finding the length of one of the sides of the rectangle. We can use the distance formula for that:
d = sqrt((x2 - x1)^2 + (y2 - y1)^2)
For example, if we want to find the length of the side between (2,2) and (2,-4), we have:
d = sqrt((2 - 2)^2 + (-4 - 2)^2) = sqrt(6^2) = 6
We can also see from the given coordinates that the sides of the rectangle are parallel to the x or y axis, which means that their lengths are simply the difference between the corresponding x or y coordinates.
So now we know that the length of the sides of the rectangle are both 6 units. The missing corner must be positioned 6 units away from the given point (-5,-4) along the x-axis, since the fourth side of the rectangle is parallel to the x-axis. Therefore, its x-coordinate is -5 - 6 = -11.
Similarly, the fourth corner must be positioned 6 units away from the given point (2,2) along the y-axis, since the fourth side of the rectangle is parallel to the y-axis. Therefore, its y-coordinate is 2 + 6 = 8.
Therefore, the coordinates of the fourth corner are (-11, 8).
A study is conducted to determine how playing a sport affects a student's overall health and well-being. The study includes 100
high school students on various sports teams. The study includes a survey composed of 5 statements to which students
respond on a scale of 1-5. A response of 5 indicates strong agreement with the statement and a response of 1 indicates
strong disagreement with the statement. The results of the statement, "Participating in a sport helps to improve a person's
ability to prioritize his or her free time," shows an average response score of 3.2 and a standard deviation of 1.2. One
conclusion in the report of the study states that participation in sports markedly improves a student's ability to make good use
of free time.
Which statements regarding the report are true?
Select each correct answer.
A)The report should be considered accurate only if the sample is a stratified sample of students playing sports.
The study is biased since the survey includes only students playing a sport so the report should not be considered
accurate.
B)The report accurately states the results because a mean score of 3.2 is greater than the predicted average of 3 on
the statement regarding prioritizing free time.
C)The report does not accurately interpret the result of the statement regarding prioritizing free time.
D)The report of the study should state that there is a strong correlation between participation in sports and ability to
prioritize free time rather than make a broad conclusion.
The requried, correct statment is shown below,
B) The report accurately states the results because a mean score of 3.2 is greater than the predicted average of 3 on the statement regarding prioritizing free time.
C) The report does not accurately interpret the result of the statement regarding prioritizing free time.
D) The report of the study should state that there is a strong correlation between participation in sports and the ability to prioritize free time rather than make a broad conclusion.
Statement A is not true as it suggests a specific sampling method is necessary for accuracy, which is not necessarily the case. The study can still be accurate if the sample is randomly selected and sufficiently large.
Learn more about Statistics here:
https://brainly.com/question/23091366
#SPJ1
Please help me with this
The volume of rectangular prism is 90 unit³.
We can consider the 1 block = 1 unit.
Length of prism = 5 unit
width of prism = 6 unit
Height of prism = 3 unit
So, Volume of rectangular prism
= l w h
= 5 x 6 x 3
= 90 unit³
Thus, the volume of rectangular prism is 90 unit³.
Learn more about Volume here:
https://brainly.com/question/1578538
#SPJ1
In 1999, the country of Monaco had a population of approximately 32,000 people. The area of the country is approximately 3/4 of a square mile. What was the approximate population density of Monaco in persons per square mile?
The approximate population density of Monaco in persons per square mile in 1999 was 42,666.67.
To calculate the population density of Monaco in persons per square mile, we need to divide the population of Monaco by the area of the country in square miles.
First, we need to convert the area of Monaco from square miles to square feet because the population figure is in persons per square mile.
1 square mile = 5280 feet × 5280 feet = 27,878,400 square feet
So, the area of Monaco in square feet is approximately:
(3/4) × 27,878,400 = 20,908,800 square feet
Now, we can calculate the population density in persons per square mile:
Population density = Population / Area
Population density = 32,000 / (20,908,800 / 27,878,400)
Population density = 32,000 / 0.75
Population density = 42,666.67 persons per square mile (rounded to two decimal places)
To learn more about population density here:
https://brainly.com/question/1581160
#SPJ1
One jar of spaghetti sauce is made with 1/4 of a cup of tomatoes. How many full jars of spaghetti sauce can be made with 3 cups of tomatoes?
Answer:
you can make 12 cans of them
The town manager of Greenville wants to survey tax-paying residents for their opinion regarding increasing real estate taxes in
support of improvements to the sports field park on the west side of town.
Which method results in a random sample of the population?
A)Ask everyone that enters the Town Hall over the course of one month to complete a survey until 100 surveys have been
completed.
B)Randomly select 100 parents of parents that play soccer for the town, using the town's list of players and a random
number generator.
C)Survey every 10th person entering a supermarket on the east side of town until 100 surveys have been completed.
D)Randomly select 100 residents paying real estate taxes, using the town's list of taxpayers and a random number
generator.
By selecting 100 inhabitants who pay real estate tax, using the town's list of taxpayers and a random number generator, Option D offers an arbitrary population sample.
Why is this a random sample of the population?This approach guarantees that each taxpayer has an equal likelihood of being chosen for the study, resulting in a diversified sample representation.
Conversely, the other options have possible biases or restrictions; like surveying solely soccer player's guardians might narrow it down to one particular group or only conducting them in designated areas could lead to misrepresentation within the frame of the entire general opinion poll.
Read more about random samples here:
https://brainly.com/question/29444380
#SPJ1
5x-y=1/4 write in slope-intercept form
The slope intercept form of the given equation is,
y = 5x - 1/4
Given an equation of a line as,
5x - y = 1/4
We have to write the equation of the line in slope intercept form.
Equation of the line in slope intercept form is,
y = mx + c
Here m is the slope and c is the y intercept.
Rearranging the given equation,
5x = y + 1/4
5x - 1/4 = y
or,
y = 5x - 1/4
Hence the slope intercept form is y = 5x - 1/4.
Learn more about Slope intercept form here :
https://brainly.com/question/29146348
#SPJ1
NEED HELP FAST HOMEWORK
The practical use of the confidence interval will be C. The confidence interval can be used to estimate that, with 90% confidence, the interval from true mean DNA base of all people
How to calculate the confidence intervalCI = 2.7 ± 1.645 * (1.0801/√10) ≈ (1.4, 4.0)
Therefore, the 90% confidence interval for the population mean µ is (1.4, 4.0).
The efficacy of confidence intervals lies in their aptitude to determine the probable range of values wherein the authentic populace mean probably resides, with a provided level of assurance. Consequently, we can assert with 90% sureness that the true population mean of DNA bases are likely to rest between 1.4 and 4.0.
Learn more about confidence interval on
https://brainly.com/question/15712887
#SPJ1
How to find the scientific notation of this problem
Answer:
[tex](4 \times {10}^{4} ) \times (2.5 \times {10}^{6} )[/tex]
[tex] = 10 \times {10}^{10} = {10}^{11} [/tex]
A parachutist's rate during a free fall reaches 165 feet per second. What is this rate in meters per second? At this rate, how many meters will the parachutist fall during 5 seconds of free fall? In your computations, assume that 1 meter is equal to 3.3 feet. Do not round your answers.
Rate: m/s
Distance fallen in 5 seconds: m
In 5 seconds of free fall at a speed of 165 feet per second, the parachute user will drop around 122.5 meters.
To convert feet per second (ft/s) to meters per second (m/s), we can use the following conversion factor:
1 m/s = 3.3 ft/s
Therefore, the parachutist's rate of 165 ft/s is equivalent to:
165 ft/s × (1 m/3.3 ft) = 50 m/s
Next, we can use the kinematic equation:
d = 1/2 * a * t²
Here d is the distance traveled (in meters), a is the acceleration due to gravity (9.8 m/s²), and t is the time (in seconds).
For 5 seconds of free fall, we have:
d = 1/2 * 9.8 m/s² * (5 s)² = 122.5 m
Therefore, the parachutist will fall approximately 122.5 meters during 5 seconds of free fall at a rate of 165 ft/s.
Learn more about the average rate of change here:
https://brainly.com/question/28744270
#SPJ1
Find the value of x
Answer:
Step-by-step explanation:5.7
Find the area of this triangle! Round to the nearest tenth!!
Answer:
180 cmStep-by-step explanation:
HELP HELP HELP HELP HELP HELPHELP HELP HELPHELP HELP HELPHELP HELP HELPHELP HELP HELP PLS PLE PLS PLS PLs
The answers to the box plot are given as follow;
1) the highest level of snow fall was 50inches. This is the maximum value on the plot
2) The data is most concentrated in the 3rd quarter. More cities has snow fall closer to 40 inches than to 13 inches.
3) the data is most spread all over the 4th quarter.
1) As per the data depicted in a box plot, it can be inferred that no urban center witnesses snowfall exceeding 50 inches.
2) The highest point on this chart supports this observation.
Furthermore, an overwhelming number of cities seem to report moderate levels of snowfall between 13-40 inches as indicated by most of these values lying within that particular section.
To buttress my argument further, I would note how close to its top edge is located the median line for this section. It is apparent that the data exhibits the highest degree of variability during the final quarter, signifying the top 25% of values.
The elongated vertical line extending from the upper end of the box up to the maximum value, which reaches 50 inches, is considerably lengthier than its counterpart at the bottom concluding with a minimum value of 5 inches.
This suggests that there is a greater disparity among snowfall measurements among cities receiving copious amounts.
Learn more about Box Plot;
https://brainly.com/question/1523909
#SPJ1
Rhys takes out a loan of £200, which gathers
interest at a rate of 3% per year. How much
interest will he have to pay after the first year?
Rhys will have to pay £6 interest after the first year.
To calculate the interest, we can use the formula:
Interest = Principal x Rate
Where:
Principal = £200
Rate = 3% = 0.03 (in decimal form)
So, the interest Rhys will have to pay after the first year is:
Interest = £200 x 0.03 = £6
Learn more about compound interest here:
https://brainly.com/question/29335425
#SPJ1
A group of consumers were asked whether they preferred Brand A or Brand B.
The table shows the probabilities of results.
Male
Female
Total
Brand A
0.5
0.3
0.8
Brand B
0.15
0.05
0.2
Being male and preferring Brand A are
P (male | Brand A)
Total
Drag a response to each box to correctly complete each statement.
P (male)
0.65
0.35
1
independent not independent
2
Being male and preferring Brand A are independent, as:
P(male|Brand A) = P(male).
How to calculate a probability?A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.
From the table, we are already given the relative frequencies, hence we must simply identify the desired outcomes and the probability of being male is given as follows:
0.5 + 0.15 = 0.65.
The conditional probability of being male, given that the person prefers brand A, is given as follows:
P(male|Brand A) = P(male and Brand A)/P(Brand A) = 0.5/0.8 = 0.625.
As the probabilities are equal, the events are independent.
More can be learned about probability at https://brainly.com/question/24756209
#SPJ1
Evaluate the function below it’s a given output value of 15
f(x)=60/3x+5
The input value that corresponds to an output value of 15 is x = -1/3.
Understanding functionTo find the input value (x) that corresponds to an output value of 15, we need to derive an equation:
15 = 60 / (3x + 5)
Multiplying both sides by (3x + 5), we get:
15(3x + 5) = 60
Expanding the left side, we get:
45x + 75 = 60
Subtracting 75 from both sides, we get:
45x = -15
Dividing both sides by 45, we get:
x = -1/3
Therefore, the input value that corresponds to an output value of 15 is x = -1/3.
Learn more about function here:
https://brainly.com/question/11624077
#SPJ1
Point N is located at (-4,-3) on the coordinate plane. Point N is reflected over the y-axis to create point N'. Point N' is then reflected over the z-axis to create point N". What ordered pair describes the location of N"?
The point (-4, -3) after the reflection across the y-axis and z-axis will be (-4, 3).
Given that:
Point, N(-4, -3)
A point's x-coordinate gets negated but its y-coordinate stays the same when it is reflected across the y-axis. Thus, the point N'(4, -3) would be produced by reflecting point N(-4, -3) across the y-axis.
A point's y-coordinate is negated but its x-coordinate remains unchanged when it is reflected across the z-axis. Thus, the point N"(-4, 3) would be produced by reflecting N'(4, -3) across the z-axis.
More about the reflection of the point link is given below.
https://brainly.com/question/938117
#SPJ1
Which of the points is not one of the vertices (s, t) of the shaded region of the
set of inequalities shown below?
OA. (0,5)
OB. (0,20)
O C. (10,0)
OD. (0, 10)
s≤ 10-0.5t
825-t
s≤ 20-t
820
120
All the points of the vertices are in the shaded region
Which of the points is not one of the vertices (s, t) of the shaded regionFrom the question, we have the following parameters that can be used in our computation:
s ≤ 10 - 0.5t
s ≥ 5 - t
s ≤ 20 - t
s ≥ 0
t ≥ 0
Next, we plot the graphs of the above inequalities
In the graph, we can see that all the points are in the shaded region
Hence, none of the points is not one of the vertices (s, t) of the shaded region
Read more about inequality at
https://brainly.com/question/25275758
#SPJ1
PLEASE HELP
Label all the following values of the box and whisker plot:
You may label the graph or write the approximate values.
Answer:
A= 7
B= 4
C= 10
D= 0
E= 13
answers in attachment below
Can someone help me with this question please? I really need help and the assignment is already late :(
The image of A after a reflection using the y-axis is (-2, -1).
Given that, the coordinate of point A is (2, -1).
The image of A after a translation 2 units to the right.
Translation rules:
When the shape is moved towards the right by k units, then replace x with x + k.
Here, (2+2, -1)=(4, -1)
The image of A after a reflection using the y-axis.
The reflection of point (x, y) across the y-axis is (-x, y).
So, the image of point A is (-2, -1)
The image of A after a rotation of 180° using center (0, 0)
Rule: (x, y) becomes (-y, x)
So, the image of point A is (1, 2)
Therefore, the image of A after a reflection using the y-axis is (-2, -1).
To learn more about the translation visit:
https://brainly.com/question/17485121.
#SPJ1
A randomized study compared the effectiveness of two
different flea collars for dogs. The dogs in the treatment
group using Flea Collar A had a mean of 2.8 fleas. The dogs
in the treatment group using Flea Collar B had a mean of 3.3
fleas.
To determine if the results are significant, the data are
rerandomized and the differences of the means are shown in
the dot plot
What is the best conclusion to make based on the data?
AThe difference of the means is not significant
because the rerandomizations show that it is
outside the range of what could happen by
chance.
B)The difference of the means is significant
because the rerandomizations show that it is
outside the range of what could happen by
chance.
C)The difference of the means is significant
o because the rerandomizations show that it is
within the range of what could happen by chance.
D)The difference of the means is not significant
O because the rerandomizations show that it is
within the range of what could happen by chance.
Difference of Means
The best conclusion to make based on the data is B The difference of the means is significant because the rerandomizations show that it is outside the range of what could happen by chance.
How to explain the informationGiven the details and dot plot, option B) is considered to be the most beneficial conclusion. This would imply that the difference between the means of fleas for two various treatment groups is not merely due to happenstance and is in fact statistically noteworthy.
Examining the randomizations further confirms that this deviation lies out of the expected parameter based on mere chance.
Learn more about data on
https://brainly.com/question/26711803
#SPJ1
What is the surface area of the cone?
Answer:
V=1/3*pi*radius(to the power of two)*height
Answer: 14 in squared
The length of one side of a golden rectangle is 0.82 centimeters. Find the length of the other side. Notice that the other side could be either longer or shorter than the given side
Answer:
A golden rectangle is a rectangle whose length and width are in the golden ratio, which is approximately 1.618. This means that if one side of the rectangle is x, then the other side is approximately 1.618x.
In this case, we know that one side of the rectangle is 0.82 centimeters. To find the length of the other side, we can multiply this value by the golden ratio:
1.618 × 0.82 ≈ 1.327
Therefore, the length of the other side of the rectangle is approximately 1.327 centimeters.
this is gonna be easy for some is can someone help with this please? hurry and try to make it sound a little simpler (zoom up to see)
The values of the products of the given fractions are 4 and 1 11/16.
Given are fractions we need to divide them,
We know that the in dividing the fraction we just flip the second fraction and change the sign of division by the sign of multiplication,
Here we will use the same concept,
1) 4/5 ÷ 1/5
Flipping the second fraction, and changing the sign of division by the sign of multiplication,
4/5 ÷ 1/5
= 4/5 × 5/1
= 20/5
= 4
Similarly,
2) 2 1/4 ÷ 1 1/3
Here the fractions are given in mixed form, firstly we will change them into proper fractions, then apply the same concept as above,
2 1/4 ÷ 1 1/3
= 9/4 ÷ 4/3
= 9/4 × 3/4
= 27/16
= 1 11/16
Hence the values of the products of the given fractions are 4 and 1 11/16.
Learn more about fractions, click;
https://brainly.com/question/10354322
#SPJ1
Solve for the Diameter, X
The measure of the diameter x for the circle is 18.6 units.
A circle is a geometric shape consisting of all points in a plane that are equidistant from a fixed point called the centre. A circle is defined by its radius, which is the distance from the centre to any point on the circle, or by its diameter, which is the distance across the circle passing through the centre and connecting two points on the opposite sides of the circle.
The diameter of a circle is a line segment that passes through the centre of the circle and connects two points on the opposite sides of the circle. The diameter is twice the length of the radius of the circle, and it is often used to express the size or scale of the circle.
The diameter of the circle will be calculated as,
x = 2 ( 3.2 + 6.1)
x = 2 ( 9.3)
x = 18.6 units
Hence, the diameter is 18.6 units.
To know more about diameter follow
https://brainly.com/question/23220731
#SPJ1
In XYZ, /Y=83°, XY =9, and XZ= 10. To the nearest tenth, what is /z?
The angle of Z is 63.2 degree.
Isosceles Triangle:The word isosceles comes from the Ancient Greek term isosceles which literally means "equal-legged." An isosceles triangle has two of its sides of equal length, which means that the angles opposite these sides would also be of equal measure.
In Triangle ΔXYZ,
∠Y = 83°, XY = 9 and XZ = 10
To find the angle of Z
Using Sine rule :- sine rule relates the sine of each angle to length of opposite side.
[tex]\frac{Sin A}{a} =\frac{SinB}{b} =\frac{SinC}{c}[/tex]
Where, A, B , C are the angles of the triangles and a, b, c are the side of the triangles
Then, Apply it:
[tex]\frac{Sin83}{10}=\frac{SinZ}{9}[/tex]
Using cross multiplication:-
Sin 83 × 9 = Sin Z × 10
Sin Z = (Sin 83 × 9)/10
Sin Z = 0.893
∠Z = [tex]Sin^-^1(0.893)[/tex]
∠Z = 63.2°
Learn more about Angles at:
https://brainly.com/question/28451077
#SPJ1
1 pound = 1.20
Euros
If one pound 1.2 euros then 14 pounds is 21 euros.
A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity
Given that 1 pound is 1.2 euros
We have to find 14 pounds in euros
To do this we just need to multiply 14 with 1.2
14×1.5
21 euros
To learn more on Unit of Measurement click:
https://brainly.com/question/15402847
#SPJ1
You need to make 48 servings of mushroom gravy. Each serving takes .75 cups of brown stock. How many quarts of brown stock do you have to make
Using proportions, it is found that you need 900 quarts of brown stock to make the servings of mushroom gravy.
We know that;
A proportion is a fraction of a total amount, and the measures are related using a rule of three.
Now, In this problem,
Each serving takes 75 cups of brown stock is,
= 75/4
= 18.75 quarts.
So, 48 servings will be made,
hence the number of quarts is given by:
n x Q = 48 x 18.75
= 900 quarts.
More can be learned about proportions at;
brainly.com/question/24372153
#SPJ1