How many pieces 1 4/5 in. long can be cut from 22 metal rods each 21 in. long? Disregard the waste.

Answers

Answer 1

The required number of pieces cut from 22 metal rods each 21 in are 242 pieces.

What is mixed fraction?

A mixed fraction is one that is represented by both its quotient and remainder. For example, 2 1/3 is a mixed fraction, where 2 is the quotient, 1 is the remainder. An amalgam of a whole number and a legal fraction is a mixed fraction.

According to question:

We have,

1(4/5) = 9/5 ,

So,

21/9/5

105/9

11(6/9)

Now,the waste is 6/9

Number of pieces are 11(22)

= 242 pieces

Thus, required number of pieces are 242.

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Related Questions

please help me with this math

Answers

PART 1: The solution of the inequality is x < 3.5 and the second graph shows the solution.

PART 2: The inequality she solved is (2/5)x - 4/5  ≤ 1 1/5.

How to solve inequality?

An inequality compares two values, showing if one is less than, greater than, or simply not equal to another value e.g. 5 < 6, x ≥ 2, etc.

PART 1

First, solve for x in 9.5x -1.25 < 32

9.5x -1.25 < 32

9.5x < 32 + 1.25

9.5x < 33.25

x < 33.25/9.5

x < 3.5

Since x < 3.5, the circle of the graph will not be shaded. Thus, the second graph is the graph of x < 3.5.

PART 2

The graph of the inequality shown there is x ≤ 5. Thus, any inequality which when solved will give x ≤ 5 will be the inequality that represent the graph.

Let's try (1/5)x - 3/5  ≤ 1/5 and see:

(1/5)x - 3/5  ≤ 1/5

(1/5)x ≤ 1/5 + 3/5

(1/5)x ≤  4/5

x ≤ 4

This is not the inequality

Let's try (2/5)x - 4/5  ≤ 1 1/5:

(2/5)x - 4/5  ≤ 1 1/5

(2/5)x - 4/5 ≤ 6/5

(2/5)x ≤ 6/5 + 4/5

(2/5)x ≤ 2

2x ≤ 10

x ≤ 5

This is the inequality

Thus, she solved (2/5)x - 4/5  ≤ 1 1/5

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I need an answer to this question by Tuesday,
(x+5)^2 ; x=-2 and y=1

Answers

Answer:

9

Step-by-step explanation:

(-2+5)^2

3^2

9

What is the answer to this?

a line segment that connects the center of the circle to any point on the circle

Answers

The answer is radius
Because it connects to the centre to any point on circle

Solve the system of equations: 3 � - � = 17 5 � + 3 � = 5 (-4, 5) (4, -5) (-4, -5) (4, 5)

Answers

Answer: To solve the system of equations, we can use the substitution method. We'll start by isolating one of the variables in one of the equations.

The first equation is 3x - 2y = 17

We can solve for x by adding 2y to both sides:

3x = 17 + 2y

x = (17 + 2y)/3

We can substitute this expression for x into the second equation:

5((17 + 2y)/3) + 3y = 5

Simplifying, we get:

50 + 10y + 3y = 5

13y = -45

y = -3.5

Now we can substitute this value of y into the equation we found earlier for x:

x = (17 + 2(-3.5))/3

x = (17 - 7)/3

x = 10/3

x = 3.333

So the solution of the system of equations is (x,y) = (3.333, -3.5)

Which is not in the options provided, so the answer is no solution.

Step-by-step explanation:

Is the federal reserve making nickel’s with a constant of proportionality? If so what is it?

Answers

What is ratio?

A ratio is a way of comparing two or more values or quantities. It expresses the relationship between the size of one value or quantity to the size of another. Ratios are often written as fractions or as ":".

The Federal Reserve is making nickels with a constant of proportionality. This can be determined by analyzing the relationship between the amount of nickels made and the time elapsed. If the number of nickels made is directly proportional to the time elapsed, then the ratio between the number of nickels made and the time elapsed will be constant.

As we can see from the table, the ratio between the number of nickels made and the time elapsed is constant, which is 6000 nickels per hour. This means that the Federal Reserve is making nickels with a constant of proportionality.

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The Federal Reserve is making nickels with a constant of proportionality.

What is ratio?

A ratio is a way of comparing two or more values or quantities. It expresses the relationship between the size of one value or quantity to the size of another. Ratios are often written as fractions or as ":".

The Federal Reserve is making nickels with a constant of proportionality. This can be determined by analyzing the relationship between the amount of nickels made and the time elapsed. If the number of nickels made is directly proportional to the time elapsed, then the ratio between the number of nickels made and the time elapsed will be constant.

As we can see from the table, the ratio between the number of nickels made and the time elapsed is constant, which is 6000 nickels per hour. This means that the Federal Reserve is making nickels with a constant of proportionality.

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Select the two values of x that are roots of this equation.

x2 + 2x – 6 = 0

A. x = -1 - sqrt of 7
B. x = -1 + sqrt of 7
C. x = -1 +2 sqrt of 7
D. x = -1 -2 sqrt of 7

Answers

The solution of the quadratic equation is obtained as -1 ± √7. Option A and B.

What is a quadratic equation?

We know that a quadratic equation has to do with the kind of equation that have the general form; y = ax^2 + bx + c. This implies that we are going to have the highest power of the variable to be x.

As such, we have the equation that have been written as; x^2 + 2x – 6 = 0. We are to find the roots of the quadratic equation which are the values for x. When we solve the quadratic equation we have;

-1 ± √7

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the green (upper) triangle has an area of . the purple (lower) triangle has an area of . place the orange triangle (square symbols) directly next to the green triangle so that the two triangles together make a rectangle. the total area of this rectangle is , which is the area of the green triangle.

Answers

The green triangle has an area of 6 sq units. The purple triangle has an area of 6 sq units. If the orange triangle is placed directly next to the green triangle such that the two triangles together make a rectangle, the total area of this rectangle is 12 sq units, which is half the area of the green triangle.

We know that the area of a triangle is given by

1/2 X Base X height

Now, for the green triangle, the area  will be

1/2 X (5 - 1) X (9 - 6)

= 1/2 X 4 X 3 sq units

= 6 sq units

The distance between the highest vertex and the base's y coordinates for the purple triangle will make up the height. hence we get

1/2 X (9 - 5) X (4 - 1)

= 1/2 X 4 X 3 sq units

= 6 sq units

Now if the orange triangle is placed on the graph in such a way that it makes a rectangle with the green one, the length and width of the rectangle will be the same as the base and height of the triangle

Hence the area of the rectangle will be

4 X 3 sq units

= 12 sq units

We can see that it is double the area of the purple triangle.

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You are going to conduct coin toss experiment using fair; evenly balanced coin. Answer the following questions regarding your experiment: Hint: You may find it valuable to write out the sample space of the experiment: What is the probability of tossing "heads" on your first coin toss? 0.50 What is the probability of tossing "heads" on each of your first two tosses?

Answers

The probability of tossing "heads" on each of your first two tosses is 0.25

Probability = n(E)/n(S)

Where E is the possibility of an event occurring

and S is the sample space i.e., the total number of possible outcomes.

Probability is the measure of how likely an event can happen. The probability of any event lies between 0 and 1 only.

The sample space for when you toss one coin is - H, T

So the probability to get an H is= 1/2

=0.5

Similarly, The sample space for when you toss two coins is HH, TT, HT, TH

So, the probability to get an H on each of your first two tosses is = 1/4

=0.25

Therefore, The probability of tossing "heads" on each of your first two tosses is 0.25

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3x+2=4; 2x-y=5 solve the system of equations algebraically using substitution

Answers

this is ur answer.

written by me

I am also class 10 student

Solve for the first variable in one of the equations, then substitute the result into the other equation.Point Form:(2,−1)(2,-1)Equation Form:x=2,y=−1

so the sanswer is 19

                              —
                               3.

Magan went shopping for a new camera because of a sale. The price on the tag was $21, but Magan paid $12.60 before tax. Find the percent discount.

Answers

Answer:

40%

Step-by-step explanation:

To find the percent discount, take the original price and subtract the discounted price.

21 - 12.60=8.4

Divide this by the original price.

8.4/21 = .4

Change this to percent form.

.4 = 40%

Answer:

8.4

Step-by-step explanation:

The price of a bag = 21

Magan paid 12.60

00. 21

12.00

- - - - - - - - -

8.4

suppose that n people give their hats to a hat-check attendant, who then returns them randomly, one to each person. (thus, all possible re-assignments of hats to people are equally likely). let x be the number of people who receive their own hats back.

Answers

x is the probability of people who receive their original hats back out of the n people. All possible re-assignments are equally likely.

x is the number of people out of the n people who are lucky enough to receive their original hats back from the hat-check attendant. All possible re-assignments of hats to people are equally likely. This means that each person has an equal chance of getting their own hat back, and the probability of any particular person getting their own hat back is 1/n. The expected value of x is therefore n/2, since the average of all possible outcomes is the expected value. The variance of x is (n-1)/12, since the variance is the average of the squared differences from the expected value.

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how many integers greater than 5400 have both of the following properties? (a) the digits are distinct. (b) the digits 2 and 7 do not occur.

Answers

There are 15120 integers greater than 5400 that have distinct digits and do not contain 2 and 7.

The number of required integers is the number of integers greater than 5400 which have distinct digits and do not contain 2 and 7. This can be calculated with the formula:

Number of Required Integers = (9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1) - (2 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1) = 30240 - 15120 = 15120.

This is because for the first part of the equation, we must calculate the total number of possible permutations of distinct digits from 0-9 (9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1). For the second part, we must calculate the number of permutations of digits from 0-9 excluding 2 and 7 (2 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1). We then subtract the second part from the first to get the required answer.

Therefore, there are 15120 integers greater than 5400 that have distinct digits and do not contain 2 and 7.

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Part 1 A projectile is launched from ground level with an initial velocity of v0 feet per second. Neglecting air​ resistance, its height in feet t seconds after launch is given by s=−16t2+v0t. Find the​ time(s) that the projectile will​ (a) reach a height of 160 ft and​ (b) return to the ground when v0 is 32 feet per second. Question content area bottom Part 1 ​(a) Find the​ time(s) that the projectile will reach a height of 160 ft when v0=32 feet per second. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice.

Answers

a) The projectile cannot reach a height of 160 feet under given conditions.

b) The projectile takes a time of 2 second to hit the ground.

How to analyze the height of a projectile in time

In this question we find the case of a project under free fall, that is, a vertical uniformly accelerated motion due to action of gravity, whose formula is shown below:

s = - 16 · t² + v₀ · t

Where:

t - Time, in secondsv₀ - Initial speed, in feet per second.

Part A - If we know that v₀ = 32 ft / s and s = 160 ft, then the time associated is:

- 16 · t² + v₀ · t - s = 0

- 16 · t² + 32 · t - 160 = 0

By quadratic formula:

t₁ = 1 + i 3, t₂ = 1 - i 3

It is physically impossible to reach a height of 160 feet under conditions given.

Part B - If we know that s = 0 ft and v = 32 ft / s, then the final time is:

- 16 · t² + v₀ · t - s = 0

- 16 · t² + 32 · t = 0

- 16 · t · (t - 2) = 0

The final time for the projectile is 2 seconds.

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Hi, please help me with this, i will be giving brainly and 5 stars once i submit and make sure everything is correct. thanks!

Answers

Answer:

see below

Step-by-step explanation:

every stage is 60m

stage one = -340+60 = -280

stage 2: -280 +60 = -220

stage 3: -220 +60 = -160

stage 4: -160+60 = -100

stage 5: -100+60= -40

stage 6: -40+60 =20

it'll take it 6 stages to fully surface



Reason Hugo walksmile from his home to the library on
Monday. He walks mile from his home to the park on Tuesday.
• How much farther does he walk on Monday than on Tuesday?
• Is your answer reasonable? Explain.

Answers

The distance travelled on Monday is 1/2 mile more than the distance travelled on Tuesday. Yes, the answer is reasonable, the difference between the two numbers indicates the remaining distance.

What are fractions?

In mathematics, a fraction is used to denote a portion or component of the total. It stands for the proportionate pieces of the whole. Numerator and denominator are the two components that make up a fraction.

Given that the distance travelled on Monday is 5/6 miles, and the distance travelled on Tuesday is 1/3 miles.

To find how much more distance is covered on Monday:

x= 5/6 - 1/3  

x= 5/6 - 2/6

x= 3/6

x= 1/2

Hence, the distance travelled on Monday is 1/2 mile more than the distance travelled on Tuesday.

Yes, the answer is reasonable because the difference between the two numbers indicates the remaining distance, that is not covered on Tuesday, thus telling us about the extra distance.

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A scientist uses a submarine to study ocean life. She begins at sea level, which is an elevation of 0 feet. She descends 21.4 feet. She then travels directly up 5.8 feet. Next, she descends a second time, 36.2 feet. How many feet must she now rise to get back to sea level?

Answers

she would need to rise about 51.8 feet

Given the information below, match the step with the reason it can be stated.

Answers

Answer:

1. e its given

2. d

3. b

4. c

5. a

this all are proved by the theorem

culate absolute and relative change
Question
Upon returning from military deployment, Joseph is trying to describe to his family all that has changed at home w
was away. To illustrate his point, he gathered information about common items that had changed in his absence..
found that the average television size was 40.4 inches at the time of his deployment, and was 42.8 inches by the
returned. What is the absolute and relative change in average television sizes from the time of Joseph's deployme
time he returned?
Round your answer for relative change to the nearest hundredth of a percent.
Do not round until your final answer.
Provide your answer below:

Answers

The absolute change in average television sizes from the time of Joseph's deployment time he returned is given as follows:

2.4 inches.

The relative change is given as follows:

5.94%.

How to obtain the absolute and the relative change?

The absolute change is given by the absolute value of the difference of the final value by the initial value, hence:

|42.8 - 40.4| = 2.4 inches.

The relative change is given by the division of the absolute change by the initial measure, and then multiplied by 100%, hence:

2.4/40.4 x 100% = 5.94%.

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solve the system using either gaussian elimination with back-substitution or gauss-jordan elimination. (if there is no solution, enter no solution. if the system has an infinite number of solutions, express x, y, and z in terms of the parameter t.) 3x 3y 12z

Answers

So, the solution is x = 1, y = -1, z = 3.

One way to solve the system is using Gaussian elimination with back-substitution. The steps are:

1. Rewrite the system in matrix form, called the augmented matrix:

[3 3 6 | 9]

[1 1 2 | 3]

[2 5 10| 15]

[-1 2 4 | 6]

2. Perform row operations to convert the matrix to an upper triangular matrix.

[1 1 2 | 3]

[0 2 4 | 3]

[0 2 6 | 6]

[0 0 -2 | -6]

3. Use back-substitution to find the values of the variables. Starting with the last equation:

-2z = -6 => z = 3

4y + 6(3) = 6 => y = -1

x + 2(-1) + 2(3) = 3 => x = 1

So, the solution is x = 1, y = -1, z = 3.

Another way is Gauss-Jordan elimination, it's similar with Gaussian elimination but it will change the matrix to a row echelon matrix and then to a reduced row echelon matrix.

So, the solution is x = 1, y = -1, z = 3.

Complete Question: solve the system using either gaussian elimination with back-substitution or gauss-jordan elimination. (if there is no solution, enter no solution. if the system has an infinite number of solutions, express x, y, and z in terms of the parameter t.)                                                                                                              3x + 3y + 6z = 9

x + y + 2z = 3

2x + 5y + 10z = 15

−x + 2y + 4z = 6

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Use the information below to find the value of x. Explain your steps.

Answers

Refer to the image attached.

Given the following table with selected values of f (x) and g(x), evaluate f (g(1)).


x –6 –4 1 3 4
f (x) 4 –1 –6 1 3
g(x) 1 4 3 –4 –6

Answers

Check the picture below.

1. You are the manager of a small store that specializes in hats, sunglasses, and other accessories. You are considering a sales promotion of a new line of hats and sunglasses. You will offer the sunglasses only to those who purchase two or more hats, so you will sell at least twice as many hats as pairs of sunglasses. Moreover, your supplier tells you that, due to seasonal demand, your order of sunglasses cannot exceed 100 pairs. To ensure that the sale items fill out the large display you have set aside, you estimate that you should order at least 210 items in all. Assume that you will lose $3 on every hat and $2 on every pair of sunglasses sold. Given the constraints above, how many hats and pairs of sunglasses should you order to lose the least amount of money in the sales promotion? [Using Graphic method]​

Answers

To lose the least amount of money in the sales promotion, you should order the minimum number of hats and pairs of sunglasses while still satisfying the constraints given.

Let x be the number of hats you order and y be the number of pairs of sunglasses you order.

From the information given, we can set up the following constraints:

y = 2x (because you will sell at least twice as many hats as pairs of sunglasses)

y <= 100 (because your supplier tells you that your order of sunglasses cannot exceed 100 pairs)

x + y >= 210 (because you estimate that you should order at least 210 items in all)

We also know that you will lose $3 on every hat and $2 on every pair of sunglasses sold. So the objective is to minimize the cost:

Cost = 3x + 2y

Now we can use the constraints to set up a linear optimization problem. We can use a solver to minimize the cost and find the optimal values of x and y that meet the constraints.

Solving the problem gives us x = 140, and y = 280, so you should order 140 hats and 280 pairs of sunglasses to lose the least amount of money in the sales promotion.

1. A right triangle has one leg that measures 8ft What is the measure of the acute triangle? Assume that the angle is 36⁰

2. A right triangle has one leg that measures 15ft What is the measure of the acute triangle? Assume that the angle is 36⁰

Answers

The measure of the other acute angle of the right angled triangle is 54⁰.

Define the term acute triangle?A form of triangle called an acute triangle has acute angles at each of its three internal angles. Triangles with sharp angles are also known as acute triangles. Acute triangles have different side lengths, but their interior angles are always less than 90°.

For the stated question:

Length of one side = 8 ft.

Let angle A = 36⁰.

For right angled triangle, Angle B = 90⁰

Then,

∠A + ∠B + ∠C = 180⁰

36⁰ + 90⁰ + ∠C = 180⁰

∠C = 180⁰ - 126⁰

∠C = 54⁰

Thus, the other acute angle is found as 54⁰.

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The correct question is-

1. A right triangle has one leg that measures 8ft What is the measure of the acute triangle? Assume that the angle is 36⁰

1.234, 1.244 , and 1.247 from greatest to least?

Answers

The arrangement with descending trend is 1.247,1.244,1.234

What is a decimal number?

A decimal number is a number that consists of a whole number and a fractional part separated by a point. For example – 3.5, 6.79, 78.32, etc.

Given here: The decimal numbers 1.234,1.244,1.247

Now  If one decimal in the list has a higher whole number than the others, it’s automatically the greatest number. If a decimal in the list has a smaller whole number than the others on the list, it’s automatically the smallest number. . Create enough rows and columns for all of the digits and number spaces (including the decimal point). Going from left to right, label the columns as tens, ones, decimal, tenths, hundredths, and thousandths.

Thus,

 ones  decimals tenths Hundreths thousands

   1           .              2           3                 4

   1           .              2           4                 4

   1           .              2           4                  7

∴ The order from greatest to least is 1.247,1.244,1.234

Hence, The arrangement with the descending trend is 1.247,1.244,1.234

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True/False: If the angular diameter of an observed object can be measured and its distance is known, its true physical diameter can be calculated.

Answers

If the angular diameter of an observed object can be measured and its distance is known, its true physical diameter can be calculated, and the given statement is TRUE.

An angular distance describes how large a sphere or circle appears from a given point of view.

The angular diameter is calculated as:

Angular Diameter=206265X(Actual diameter/Distance)

The angular diameter of an object is the angle the object makes as seen by an observer. This is demonstrated in the diagram below, where the angular diameter of the object appears larger to an observer at A than to an observer at B.

Angular diameter can also refer to the distances between two objects, measured on the celestial sphere.

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tom and jerry have one day to work, but two tasks to focus on: building chairs and tables. if tom spends all day building chairs, he will make 16 chairs. if he instead devotes his day to building tables, tom will make 4 tables. if jerry spends his day building chairs, he will make 14 chairs; if he spends the day building tables, he will make 7 tables. based on their production possibilities frontiers, tom and jerry:

Answers

As per the unitary method, there are 10 chairs and there are 2 tables.

In math the term called unitary method is known as  a process of finding the value of a single unit, and based on this value we can find the value of the required number of units.

Here we have given that tom and jerry have one day to work, but two tasks to focus on building chairs and tables.

Here we also know that  if tom spends all day building chairs, then he will make 16 chairs.

And if he instead devotes his day to building tables, then tom will make 4 tables.

Where as if jerry spends his day building chairs, then he will make 14 chairs on the other hand if he spends the day building tables, then he will make 7 tables.

Based on the given details, here by using the unitary method, for one day, he will product 10 chairs and 2 tables.

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Find the point on the curve y = -x^2 - 2 that is closest to the point (0, 1). A. (0, 0) B. (0, -2) C. (1, -3) D. (-1, -3)

Answers

Answer:

the answer is B (0, -2)

Step-by-step explanation:

To find the point on the curve y = -x^2 - 2 that is closest to the point (0,1), we can use the method of least squares.

The method of least squares involves finding the point on the curve that minimizes the square of the distance between the point and the curve.

To begin, we can define a function d(x) = (y - (-x^2 - 2))^2 which represents the square of the distance between the point (x,y) on the curve and the point (0,1)

then we need to find the derivative of d(x) and set it to zero to find the minimum,

d'(x) = 2(y + x^2 + 2 - 1) = 2(y + x^2 + 1)

by setting d'(x) = 0 we get y = -x^2 - 1,

so the point on the curve that is closest to (0,1) is (0, -1) and the answer is B (0, -2)

Note that the point (0,-1) is on the curve y = -x^2 - 2 but not the point on the closest.

Match the given differential equation with one or more of the solutions. (Select all that apply.)
xy'' ? y' = 0
y=0
y=2x
y=2x^2
y=2

Answers

The solutions that match the given differential equation are a)y=0 and b)y=2x.

The differential equation is a homogeneous linear differential equation with constant coefficients, which can be written in the form of y" + p(x)y' + q(x)y = 0. The general solution to this type of equation is y = c1e^(rx) + c2e^(rx) where r is the root of the characteristic equation r^2 + p(x)r + q(x) = 0.

In this case, the equation is of the form xy'' - y' = 0. By dividing both sides by x, we get y'' - (1/x)y' = 0, which is a homogeneous linear differential equation with constant coefficients. The characteristic equation is r^2 - (1/x)r = 0. The roots of this equation are r1 = 0 and r2 = 1/x.

Therefore, the general solution to this differential equation is y = c1 + c2x.

y=0 is a solution of the differential equation since it satisfies the equation when plugged in.

y=2x is also a solution of the differential equation since it also satisfies the equation when plugged in.

y=2x^2 and y=2 are not solutions of the differential equation because when plugged into the equation they don't satisfy it.

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Find the slope between the points (8,4) and (2,8)

Answers

3.5 4.6 ajdbdjfbfjfhvut urvdjfnfifngf

If x^2+1/x^2 =1, then what is x^3+1/x^3

Answers

Answer:

x^3+1/x^3 = x^2

Step-by-step explanation:

If x^2+1/x^2 =1

The equation x^2+1/x^2 =1 states that the sum of the square of x and the reciprocal of x squared is equal to 1. We can multiply both sides of this equation by x(x+1/x) which is x^2 + 1.

This gives us (x^2)(x+1/x) = x^3 + 1/x^3 = 1.

So, x^3+1/x^3 = x^2.

that x^2+1/x^2 =1, we can deduce that x^3+1/x^3 = x^2. This is because we multiplied both sides of the first equation by x^2 + 1/x^2,

which is equal to x^3+1/x^3 = x^2

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