Please help . Fast!!!!! Answer please..​

Please Help . Fast!!!!! Answer Please..

Answers

Answer 1

Answer:

x = 11

Step-by-step explanation:

Given;

[tex]x-\frac{1}{x}=3[/tex]

Squaring equation;

[tex](x-\frac{1}{x})^2=3^2[/tex]

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

By algebraic identity :

[tex](a-b)^2=a^2+b^2-2ab[/tex]

Substitute

[tex]x^2+\frac{1}{x}^2 - 2 = 9[/tex]

Add

[tex]x^2 + \frac{1}{x}^2 = 9 +2[/tex]

Simplify

[tex]x^2 + \frac{1}{x}^2 = 11[/tex]

Hence, x = 11.

~Learn with Lenvy~


Related Questions

what is -2(3x + 12y - 17x -16y + 4) simplified?

Answers

Answer:

28x+8y-8

Step-by-step explanation:

Follow the orders of PEMDAS:  (parenthesis, exponents, multiplication, division, addition, subtraction)

If an equation you need to solve has parentheses, simplify the parentheses (most often using distribution) and then solve as you normally would. Simplify both sides of the equation as much as possible using the order of operations (distribute, combine like terms, etc.).

answer

28x+8y-8

Step-by-step explanation:

-6x -24y +34x +32y -8

Fill in values for a, b and c so that the answer to this equation is x = 4.
a(bx+3)=c​

Answers

Answer:

A=1, B=3, C=15

Step-by-step explanation:

I think that

1(3x+3)=15

3x+3=15

3x=12

x=4

Given y=f(x) when f(x) = 2 the graph of y=[tex]\sqrt{f(x)}[/tex]
a. is undefined
b. intersects y=f(x) on the x axis
c. is above the graph of y=f(x)
d. intersects the graph of y=f(x)
e. is below the graph of y=f(x)

Answers

Answer:

  e.  is below the graph of y=f(x)

Step-by-step explanation:

The graph of y = √2 is below the graph of y = 2.

__

Both graphs are horizontal lines. √2 is about 1.414, so is less than 2. On a coordinate plane with values of y increasing in the "up" direction, y=1.414 will be graphed below y=2.

100 BRAINLY POINTS!!!

The harvest results of a farm are shown in the graph below.


Which equation best models the relationship between the amount of compost used, x, and the harvest yield, y ?

A. y = x

B. y = 200x

C. y = x + 200

D. y = 200x + 200

EXPLAIN YOUR ANSWER
SHOW YOUR WORK

Answers

Answer:

C

Step-by-step explanation:

The guy who has 7.5k answers said so. Plus I need the 50 B Points

The equation that best models the relationship between the amount of compost used and the harvest yield is y = x+200

What is an equation?

Mathematically, an equation can be defined as a statement that supports the equality of two expressions, which are connected by the equals sign “=”.

Given that, a graph that shows the harvest results of a farm, we need to construct an equation that will give a relation between the compost used and the yield,

So the coordinates are

(0,200)

(200,400)

(400,600)

(600,800)

Finding the slope,

600-400 / 400-200 = 200/200 = 1

The y-intercept is 200, so, the relationship is

y=200+x

Hence, the equation that best models the relationship between the amount of compost used and the harvest yield is y = x+200

Learn more about equations, click;

https://brainly.com/question/29538993

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Which line segment is a radius of circle F?

FE
AC
ED
DC

Answers

Answer:

FE

Step-by-step explanation:

FE- radius

AC- diameter

ED- arc

DC- arc

RADIUS

Question:

» Which line segment is a radius of circle F?

[tex] {\overline{FE}}[/tex][tex] {\overline{AC}}[/tex][tex] {\overline{ED}}[/tex][tex] {\overline{DC}}[/tex]Answer:[tex] \bold{Radius/Radii = } \: \purple{ {\overline{FE}} }[/tex]Explanation:Radius is one-half (½) of the diameter. Radii (plural of radius)

_______________∞_______________

Find the quotient.
9 divided by 2 1/2
a. 4 2/5
b.3 1/5
c. 3 3/5
d.17 7/9

Answers

Answer:

c 3 3/5

Step-by-step explanation:

change to improper fraction

multiply by reciprocal simplify

C. 3 3/5 Hope this helps

On farmer Palmer’s farm, the cats have got into the chicken coop and are causing chaos.
Farmer Palmer counts in total, 11 heads and 30 legs. How many cats and how many chickens are in the chicken coop. Show a step by step method using simultaneous equations.

Answers

4 cat and seven chicken

The number of chickens and goats will be 7 and 4, respectively.

What is the solution to the equation?

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

On farmer Palmer’s farm, the cats have got into the chicken coop and are causing chaos. Farmer Palmer counts in total, 11 heads and 30 legs.

We know that a goat has four legs and a chicken has 2 legs.

Let 'x' be the number of chickens and 'y' be the number of goats. Then the equations are given as,

x + y = 11                  ...1

2x + 4y = 30           ...2

From equations 1 and 2, then we have

2(11 - y) + 4y = 30

22 - 2y + 4y = 30

2y = 8

y = 4

Then the value of 'x' is given as,

x = 11 - 4

x = 7

The number of chickens and goats will be 7 and 4, respectively.

More about the solution of the equation link is given below.

https://brainly.com/question/545403

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What is the length of the hypotenuse of the triangle below?

Answers

Answer:

C

Step-by-step explanation:

A²+ B²= C²

(3√2)² + (3√2)² = h

18 + 18 = 36

√36 = 6

the hypotenuse is 6

Answer:

h = 6

Step-by-step explanation:

find hypotenuse h from a given right triangle.

use the Pythagorean theorem

a² + b² = h²

where a = 3√2 = b

plugin values into the formula:

(3√2 )² + (3√2 )² = h²

18 + 18 = h²

h = √36

h = 6

1. Evaluate
A
B
C
D
a=bh/2

Answers

Answer:

the area A of a triangle is given by the formula A=1\2 bh where b is the base and h is the height : solve the formula for the height.

1 answer

·

Top answer:

A=1/2 bh multipy 2 at both side of the equation 2A = bh divide b at both side , then we will get h h = 2A/b

Step-by-step explanation:

what is the length of the sediment with endpoints (-3,4) and (5,4)

Answers

(-3,4); (5,4)

In image

--_----------------

What do you do if you get a decimal point while trying to find the mean

Answers

Answer:

you leave the decimal point In the answer.

Help pleaseee I need help filling the blank spaces with either true/false
I’ll mark brainliestttt

Answers

Answer:

1. true 2. true 3. false 4. true 5. false 6. false 7. false

Step-by-step explanation:

im not a 100% sure this is right but ik some that are right im just not sure about 3. and 5. so ye UWU

Answer:

T

F

T

T

F

F

T

Step-by-step explanation:

The perimeter of the rectangle below is 102 ft. What is the value of X
one side is (2+x) ft
the other is 3 ft​

Answers

Answer:

X=46 ft.

Step-by-step explanation:

Write an equation to solve the problem.

Since one side is 3 ft, don’t forget that there is another side of the rectangle that is also 3 ft. We can add this part to the equation as 2(3).

Now, let’s see the other side. It’s (2+x) ft. As mentioned before, there are another side, so, you guessed it: 2(2+x).

We have our equation:

2(3)+2(2+x) = 102 ft.

Simplify first:

6+4+2x = 102 ft.

10+2x=102 ft.

2x=92 ft.

x=46 ft.

Show that
[tex] \frac{7}{27} + 1 \frac{7}{9} = 2 \frac{1}{27} [/tex]
Write down all the steps in your working ​

Answers

Answer:

2 wholes and 1 27th

Step-by-step explanation:

so you have to times the bottom numbers so there the same 9x3=27 then times the top by three so its 21 on the top the you plus 1 whole so then you add it all together you should get 2 wholes and 1 27th

Step-by-step explanation:

First add the LHS side,

[tex] \hookrightarrow\frac{7}{27} + 1 \frac{7}{9} \\ \hookrightarrow\frac{7}{27} + \frac{16}{9} \\ \hookrightarrow \frac{7 \times 1+ 16 \times 3}{27} \\ \hookrightarrow \: \frac{55}{27} \\ \hookrightarrow \: 2 \frac{1}{27} [/tex]

Hence LHS= RHS Proved!

Plz need help I will mark branliest

Answers

Answer:

see explanation

Step-by-step explanation:

The equation of a circle centred at the origin is

x² + y² = r² ( where r is the radius )

x² + y² = 49 ← is in this form with

r² = 49 ( take square root of both sides )

r = [tex]\sqrt{49}[/tex] = 7

Thus A = (7, 0 ) and B = (0, 7 )

To find M use the midpoint formula

M = ( [tex]\frac{7+0}{2}[/tex], [tex]\frac{0+7}{2}[/tex] ) = (3.5, 3.5 )

The equation of a line passing through the origin is

y = mx ( m is the slope )

Calculate m using the slope formula

m = [tex]\frac{x_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (0, 0 ) and (x₂, y₂ ) = (3.5, 3.5 )

m = [tex]\frac{3.5-0}{3.5-0}[/tex] = [tex]\frac{3.5}{3.5}[/tex] = 1

y = x ← equation of line passing through O and M

Answer:

Below in bold.

Step-by-step explanation:

(a)

At point A,  y = 0 so the coordinates of A are found as follows:

x^2+ 0^2 = 49

x^2 = 49

x = 7   so A is (7, 0).

In a similar way,  by putting x = 0 in the equation, we can show that

B = (0, 7).

(b)

M is the midpoint of the line AB so its coordinates are:

(7+ 0)/2, (0 + 7) /2 = (3.5, 3.5).

So the slope of OM  which also passes through the origin (0,0) is:

(3.5 - 0) /(3.5 - 0) = 1.

y - y1 = m (x - x1)

y - 3.5 = 1(x - 3.5)

y = x - 3.5 + 3.5

y = x is the required equation.

What is the equation for (4,8) please someone help I have a test tomorrow.

Answers

Answer:

Your answer will be y=x2−12x+32

Step-by-step explanation:

Step 1 : x = 4 and  x = 8 are the two real distinct solutions for the quadratic equation, which means that  x − 4  and  x − 8 are the factors of the quadratic equation. ( x − 4 ) ( x − 8 ) = 0

Step 2: Expand  ( x − 4 ) ( x − 8 ) using the FOIL Method. x ⋅ x + x ⋅ − 8 − 4 x − 4 ⋅ − 8 = 0

Which would give you x2 − 12 x + 32 = 0

Step 3: The standard quadratic equation using the given set of solutions

{ 4  , 8 } is y = x 2 − 12 x + 32 .

This is you answer should be  

y = x 2 − 12 x + 32

Find the value of f(2).

Answers

Answer:

y=2

Step-by-step explanation:

You would look on your x-axis and find the point two, the number on the y-axis that corrisponds with that is 2 so therefore your answer is two. Hope this helps!

Answer:

It's easy: if y = 2, what is x on the graph?: 2, because f(x) is the same as y.

Step-by-step explanation:

There are 32 students in a class. Nine of those students are women. What percent are men?

Answers

Answer:

72%

Step-by-step explanation:

you can divide part of a whole by the whole to get a decimal

this decimal is the percentage when you move the decimal 2 places to the right

32 - 9 = 23 men

23/32 = .72 (rounded)

.72 = 72%

Find te slope of the graph

Answers

Answer:

It is d. 3/2

Step-by-step explanation:

slope formula is rise over run or x2-x1/y2-y1. So it would be 6-0/4-0. That equals 6/4. You just need to simplify that by dividing both 6 and 4 by 2 and you get 3/2.

the answer to the question is D

what is the answer for 3 7/3 ×2

Answers

Answer:

10 2/3

Step-by-step explanation:

3 7/3 = 16/3 x 2/1 =

32/3 = 10 2/3

Hope this Helps! :)

Have any questions? Ask below in the comments and I will try my best to answer.

                   -SGO

This data gives the average number of hours different students spend on the computer each day. Average time (h): 1. 6, 2. 0, 2. 0, 2. 0, 1. 8, 1. 8, 1. 5, 2. 0, 1. 9, 1. 6, 1. 9, 1. 7, 1. 6, 1. 6, 2. 0, 1. 8, 1. 5, 2. 0 Create a line plot to display this data. To create a line plot, hover over each number on the number line. Then click and drag up to plot the data. Students Weekly Computer Time 1. 5 1. 6 1. 7 1. 8 1. 9 2. 0 Average time (h) 0 1 2 3 4 5 6 7 8 Y label

Answers

The line plot is used to show the average time spent using check marks above the line

How to draw the line plot

From the dataset of the average number of hours, we have the following frequency table

Average time         Frequency

1.5                                2

1.6                                4

1.7                                1

1.8                                3

1.9                                 2

2.0                                6

Next, we plot the number line.

Such that the average time spent are on the x-axis while their frequencies are on the y-axis

See attachment for the line plot

Read more about line plots at:

brainly.com/question/15853311

Given the function x^3-5x:
Find f (2)
Find f(-2)
Is the function odd or even?

Answers

f(2)= -2, f(-2)= 2, odd

Step-by-step explanation:

1. f(2)=x^3-5x

2. f(2)= 2^3-5(2)

3. f(2)=8-10

4. f(2)= -2

5. f(-2)= x^3-5x

6. f(-2)= -2^3-5(-2)

7. f(-2)= -8+10

8. f(-2)= 2

please help me please

Answers

Answer:

○ [tex]\displaystyle -4[/tex]

Step-by-step explanation:

When [tex]\displaystyle f(x)[/tex]is [tex]\displaystyle 0,[/tex]you relocate to the x-axis to find the x-coordinate, and happens to be [tex]\displaystyle -4.[/tex]

I am joyous to assist you at any time.

Sharon is drawing up a plan for building a reduced Eiffel Tower on her backyard patio. She has room to make a base of 5 feet. Her work is shown below. France: height = 1,050 feet; base = 328 feet. 1. Proportion: StartFraction 1050 over 328 EndFraction = StartFraction 5 over x EndFraction. 2. Cross Products: 1050 (x) = 328 (5). 3. Simplify: 1050 x = 1640. 4. Divide: x almost-equals 1. 5619. The reduced tower height is about 1. 6 feet. What was Sharon’s error in finding the missing height measurement for her reduced tower? Her proportion does not have corresponding parts in the same position. For cross products, she needed to multiply 1050(328) and 5(x). She needed to divide both sides by 1640, instead of 1050. She needed to round down to 1. 5 feet.

Answers

Answer:

A.) Her proportion does not have corresponding parts in the same position.

Step-by-step explanation:

Sharon got the wrong answer which was supposed to be 1.6 feet

Solve: (4x-1) divided by 2 =x+7

Answers

Answer:

x=5/2

Step-by-step explanation:

4x-1/2=x+7

4x-x=7+1/2

3x=14/2+1/2

3x=15/2

x=15/2×1/3

so

x=5/2

really stuck on this question idrk why.. can anyone help me?

Answers

Answer:

i think its C) 3x^2 + 5

Step-by-step explanation:

because it matches it matched the rectangle, I'm so sorry if this is wrong I tried my best good luck!!

Answer:

3x^2 + 15x

Step-by-step explanation:

area = length x width

a = 3x(x + 5)

a = 3x^2 + 15x

HELP ME PLZZ THIS DUE TODAY!

Answers

Answer:

D.

Step-by-step explanation:

I think that the easiest one would be D, because even after you use the property, it will still have addition only.

26,24.5,23
arithmetic or geometric
recursive formula :
explicit formula :
9th term :

Answers

Answer:

I don't know the answer but have a amazing day!<3

Step-by-step explanation:

Be happy.



is this table a function?

Answers

Answer: No, it is not a function

We have x = 81 repeat itself. Any time x repeats, it means we don't have a function.

Put another way, the input x = 81 leads to more than one y output. A function is only possible if any given input leads to exactly one output. The input must be in the domain.

No
You can’t have two different numbers on the same x point. 81 is not able to be a negative 9 and a positive in the same graph

AVIS rent a car is running a deal where you can rent a car for $49.99 and $0.99 per mile. using m for miles write the expression that depicts this situation

Answers

Answer:

y= 49.99x+.99

Step-by-step explanation:

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