​​ALGUIEN POR FAVOR AYUDEME A RESOLVER ESTOS 3 PROBLEMAS

ALGUIEN POR FAVOR AYUDEME A RESOLVER ESTOS 3 PROBLEMAS

Answers

Answer 1

Answer:

a. x^2 - 1

b. x^2 - 6x + 9

c. [tex]\dfrac{3x + 1}{x^2 + x}[/tex]

Step-by-step explanation:

a.

(x + 1)(x - 1) =

= x^2 - x + x - 1

= x^2 - 1

b.

(x - 3)^2 =

= (x - 3)(x - 3)

= x^2 - 3x - 3x + 9

= x^2 - 6x + 9

c.

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

[tex] = \dfrac{x(3 + \frac{1}{x})}{x(1 + x)} [/tex]

[tex] = \dfrac{3x + 1}{x + x^2} [/tex]

[tex] = \dfrac{3x + 1}{x^2 + x} [/tex]


Related Questions

Identify the sentence that does not belong with the other three. Explain. x+12=12+x, 7h=h.7, 1+a=a+1, (2j)k=2(jk)​

Answers

Answer:

is 764

Step-by-step explanation:

beacuse it has 764 and i dont konw the rest

A television is reduced in a sale by 20%. The sale price of the TV is $328, what was the original price of the TV?

Answers

Answer:

$ 410

Step-by-step explanation:

hi there !

80% ................. $328

100% .................$ x

x = 100×328/80

= 32800/80

= $ 410

Good luck !

__ = 4
22 8

Anybody know???

Answers

88 because 22/22 is 1 so you 22x4
88 because i took the test.

Determine if the two fraction are equivalent, 65/4, 13/2

Answers

Answer:

The fractions are not equivalent. If you cross multiply 65 x 2 = 130 and 4 x 13 = 52. 130 > 52. Set them as a proportion. [tex]\frac{65}{4} = \frac{13}{2}[/tex]

They are not equal.

For 65/4 you cannot divide it by 2 and then get 13/2. You would get 32.5/2.

32.5/2 is not equal to 13/2

hope this helps :)

What products are defined for these matrices?
Drag the operation to the boxes to correctly complete the table.

Answers

Answer:

Product is defined             [tex]{}[/tex]                                

(ML, MP, NM, PQ, PL, LP, MQ, LQ)        

Product is not defined

(LM, PM, MN, QP, QM, NQ, QN, NL, LN, NP, PN, QL)  

Step-by-step explanation:

During multiplication of matrices, the number of columns of the first matrix must be equal to the number of rows of the second matrix it is multiplying.

Therefore, we can only multiply a m×n matrix to a n×c matrix as follows;

We can only multiply (m×n)·(n×c) → Product is defined

We can not multiply (n×c)·(m×n) →∞ Product is not defined.

Suppose a basketball player has made 291 out of 389 free throws. If the player makes the next 2 free throws, I will pay you $38. Otherwise you pay me $50. Step 1 of 2 : Find the expected value of the proposition. Round your answer to two decimal places. Losses must be expressed as negative values.

Answers

Answer:

The expected value of the proposition is -$0.76.

Step-by-step explanation:

It is provided that a basketball player has made 291 out of 389 free throws.

Then rate of him making a free throw is,

[tex]P(\text{free throw})=\frac{291}{389}=0.7481[/tex]

The probability that he makes the next 2 free throws is:

[tex]P(\text{Next 2 free throws})=(0.7481)^{2}=0.5596[/tex]

The payout rules are:

If the player makes the next 2 free throws, I will pay you $38. Otherwise you pay me $50.

Compute the expected value of the proposition as follows:

Expected value = $38 × P (Makes both) + (-$50) × P (Misses both)

                          [tex]=($38\times 0.5596)+(-$50\times (1-0.5596))\\=21.2648-22.02\\=-0.7552\\\approx -$0.76[/tex]

Thus, the expected value of the proposition is -$0.76.

What integer represents the total charge of 7 electrons?

Answers

the integer that represents the total charge of 7 electrons is -1.The total charge of electrons is given by the formula:

total charge = number of electrons x charge of each electron

what are electrons ?

Electrons are subatomic particles that carry a negative electric charge. They are one of the fundamental particles that make up atoms, along with protons and neutrons. Electrons are found in shells or energy levels that surround the atomic nucleus

In the given question,

The total charge of electrons is given by the formula:

total charge = number of electrons x charge of each electron

The charge of an electron is a fundamental constant, which is equal to -1.602 x 10⁻¹⁹ Coulombs. Therefore, the total charge of 7 electrons can be calculated as:

total charge = 7 x (-1.602 x 10⁻¹⁹) C

total charge = -1.1214 x 10⁻¹⁸ C

Note that the charge of an electron is negative because it has an opposite charge to the positively charged protons in an atom. Therefore, the total charge of 7 electrons is also negative. To express this charge as an integer, we need to convert it to scientific notation and round to the nearest whole number. Rounding to the nearest whole number gives:

total charge = -1 x 10⁻¹⁸ C

Therefore, the integer that represents the total charge of 7 electrons is -1.

To know more about electrons, visit:

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HELLLLPPPPP!!!! DUE TODAY

Answers

The answer should be B

Match each statement (term) with its value in relation to 0 (definition).
Match
Term
Definition
A building is 38 feet tall.
A) -8.3
B)-27
The scuba diver was 38 feet below
sea level.
C) 2.7
The basement is 8.3 feet below
ground.
Oliver owes his sister $27.
D) 38
Erica jumped 2.7 feet above ground. E) -38

Answers

Answer:

it is in this order

Step-by-step explanation:

D E A B C your welcome! and good luck

David watches Maria and Alma race electric trains around a track. Maria's train goes around the track in 10 seconds. Alma's train goes around the track in 12 seconds.

How long will it take for both trains to cross the finish line together the first time?

A
30 seconds

B
60 seconds

C
72 seconds

D
120 seconds

Answers

Answer:

60 seconds.

Step-by-step explanation:

We have been given that Maria train can go around the track in 10 seconds. Alma train can go around the track in 12 seconds.

To find the number of seconds after which both trains will cross the finish line together the first time we will find LCM of 10 and 12. LCM will give us the smallest positive integer that is divisible by both 10 and 12.  

Multiples of 10 are: 10, 20, 30, 40, 50, 60, 70,...    

Multiples of 12 are: 12, 24, 36, 48, 60, 72, 84,..  

We can see that least common multiple of 10 and 12 is 60, therefore, it will take 60 seconds for both trains to cross the finish line together the first time.

I'm confused on this problem 2/3x-1=5

Answers

Answer:

x=9

Step-by-step explanation:

2/3x-1=5

Add 1 to each side

2/3x-1+1= 5+1

2/3x = 6

Multiply each side by 3/2

2/3x*3/2 = 6*3/2

x = 9

Answer:

x=9

Step-by-step explanation:

You add one to both sides, multiply 3 to both sides (to further isolate x), and then divide by 2 on both sides. When you substitute back in, both sides of the equation are equal to each other.

find the smallest number by which 339 must be multiplied so that the product is a perfect cube. also find the cube root of the perfect cube so obtained

Answers

Answer:

The smallest number is 114921 and the cube root of the result is 339

Step-by-step explanation:

The number 339 can be factored as:

339 = 3 * 113

Both factors are prime, thus to produce a perfect cube, we must multiply by each factor to the power of 2, that is:

3^2*113^2=114921

When we multiply 339 by 114921 we get 38958219, a perfect cube which cube root is 339.

Thus, the smallest number is 114921 and the cube root of the result is 339

8+6x-5x+2+2x=12 whats x ?

Answers

Answer:

The answer is 1

Step-by-step explanation:

combine like terms!

[tex]8+6x-5x+2+2x=12\\8+2+6x-5x+2x=12\\10+6x-5x+2x=12\\10+x+2x=12\\10+2x=12\\2x=2\\x=1[/tex]

hope this helps!!

Solve:
-x/6 + 3 =8
2/7(x) = 10
-10x = -100

Answers

Answer:

-x/6 + 3 =8

x = -30

2/7(x) = 10

x = 35

-10x = -100

x = 10

7d Ꮞd - 3d = Ꮞ0
Pleasee✌

Answers

28d-3d=40
25d=40
d=1.6
I think it’s right

Answer:

it is 5

Step-by-step explanation:

7d+4d-3d=40

7d+1d=40

8d=40

40/8=x

x=5

if it was addition

Why is it better to use the metric system, rather than the English system, in scientific measurement?

The English system uses one unit for each category of measurement.
The metric system uses one unit for each category of measurement.
The English system uses consistent fractions that are multiples of 10.
The metric system utilizes a variety of number conversions.

Answers

Answer:

b

Step-by-step explanation:

It is better to use the metric system, rather than the English system, in scientific measurement because,

The metric system uses one unit for each category of measurement.

What is a metric system?

A system of measurements is called the metric system. It is employed in calculations and research across the globe.

Measurements for length include millimeters (mm), decimeters (dm), centimeters (cm), meters (m), and kilometers (km).

A foot equals 30.48 cm, however, a popular 30 cm rule measures every 1 cm, therefore the metric system also provides more exact measurements.

The English system is in fact based on the metric system because they look for reference materials to get the measurements.

learn more bout the metric system here :

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Write the equation in standard form. x + y = 6y

Answers

[tex]x + y = 6y[/tex]

Subtract the sides of the equation minus 6y

[tex]x + y - 6y = 0[/tex]

[tex]x - 5y = 0[/tex]

[tex] - 5y + x = 0[/tex]

[tex]a = - 5[/tex]

[tex]b = 1[/tex]

[tex]c = 0[/tex]

_________________________________

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

9(m +5) - 3(m - 2) = 8m + 31

Answers

Answer:

m=10

Step-by-step explanation:

Answer:

m=10

Step-by-step explanation:

9(m+5)−3(m−2)=8m+31

Step 1: Simplify both sides of the equation.

9(m+5)−3(m−2)=8m+31

9m+45+−3m+6=8m+31

(9m+−3m)+(45+6)=8m+31(Combine Like Terms)

6m+51=8m+31

Step 2: Subtract 8m from both sides.

6m+51−8m=8m+31−8m

−2m+51=31

Step 3: Subtract 51 from both sides.

−2m+51−51=31−51

−2m=−20

Step 4: Divide both sides by -2.

m=10

Hope this helps girly!!

Convert 3,200,000 to scientific notation.

3.2 ⋅ 106
3.2 ⋅ 105
3.2 ⋅ 10−6
3.2 ⋅ 10−5

Answers

It’s 3.2 • 10 with the exponent of 6

Find the median for the following data set: 11, 13, 17, 11, 10, 15, 11, 12, 13, 15
O 125
O 12
O 13
O 13.5

Answers

Answer:

A, 12.5

Putting them in order was this:

10, 11, 11, 11, 12, 13, 13, 15, 15, 17

and the median is between 12 and 13, which is 12.5

(Hope that helps you. ^^)

the answer is A) i think i hope i’m right

There are 4 white and 8 red roses in a bouquet. Find the ratios.
1b). The ratio of the numbers of red roses to the number of all roses

Answers

Answer:

1a) 1:2

1b) 2:3

Step-by-step explanation:

1a) 4:8 = 1:2

1b) 4 white and 8 red means 12 total so ratio for red would be 2:3

Answer:

1 ÷ 22 ÷ 3

Step-by-step explanation:

Given4 white and 8 red rosesTo findRatios of rosesSolution

Ratio of white roses to red roses

4 ÷ 8 = 1 ÷ 2

Ratio of red to all

Sum of roses

4 + 8 = 12

Ratio

8 ÷ 12 =2 ÷ 3

Which number is a multiple of 9?
A:109
B:3
C:27
D:89

Answers

Answer:C

Step-by-step explanation:

9 x 3 = 27

the correct answer is c 9 times 3 equals 27

In which quadrant or on which axis would you find the point
( 2, 7 )

Answers

Answer:

The answer is Quadrant 1

quadrant 1

hope this helped

When the transformation (x,y) → (x + 10, y + 5) is
performed on point A, its image, point A', is on the origin
What are the coordinates of A? Justify your answer.

Answers

Answer:

its 3.05

Step-by-step explanation:

The coordinates of A will be at (-10, -5) when the transformation (x,y) → (x + 10, y + 5) is  performed on point A.

Given the coordinate of the resulting image after the transformation is A'(0, 0). We need to get the coordinate of the original image A.

Since the transformation (x,y) → (x + 10, y + 5) is performed on A.

A = (0 - 10, 0 - 5)

If we are going from the pre-image to the image, we will translate to the left and downwards

A = (-10, -5)

Hence the coordinates of A will be at (-10, -5)

Learn more here:

help me, please cause I'm stuck

Answers

Answer:4.03 x 10^4

Step-by-step explanation:

HELP PLZ RN<3
which graph displays a rate of change of 2.5?

Answers

Answer:

The second graph.

Step-by-step explanation:

The first graph has a negative slope, so that can't be the right answer.

The last graph isn't steep enough to show a rate of 2.5.

This leaves us with the middle graph which is correct.

Christopher was out at a restaurant for dinner when the bill came. To find the total plus tip he multiplied the cost of the meal by 1.22. what percent tip did he leave?​

Answers

Answer:

75%

Step-by-step explanation:

Gregoria borrowed $2,450, to be paid back at 3.5% simple interest. She spent $3221.75 in all to repay the loan. How many years did Georgia take to repay the loan?

Answers

Answer: 9 years

Step-by-step explanation:

Simple interest = PRT/100

where

P = principal = $2450

R = rate = 3.5%

T = time = unknown

Interest = $3221.75 - $2450 = $771.75

Simple interest = PRT/100

$771.5 = ($2450 × 3.5 × T)/100

$771.5 = $8575T/100

8575T = 771.5 × 100

8575T = 77150

T = 77150/8575

Time = 8.99 years = 9 years

solve -8(n+5)=-44-8n

Answers

Answer:

there are no solutions

Step-by-step explanation:

HERE ARE THE STEPS IN CASE U NEED EM :)

Step 1: Simplify both sides of the equation.

−8(n+5)=−44−8n

(−8)(n)+(−8)(5)=−44+−8n(Distribute)

−8n+−40=−44+−8n

−8n−40=−8n−44

Step 2: Add 8n to both sides.

−8n−40+8n=−8n−44+8n

−40=−44

Step 3: Add 40 to both sides.

−40+40=−44+40

0=−4

(pls i need help fast i know nothing about football )The Red team score the following number of points in their last 5 games, 36 points, 30 points, 24 points, 12 points, and 18 points.


What is the mean (average) number of points they scored each game.





a
32 points
b
30 points
c
24 points
d
18 points

Answers

Answer:

c

Step-by-step explanation:

You add up all of the points and divide by 5.

Other Questions
please help me as soon as possible ! I have till 12AM to finish all my work I have a ton please help! :) *GIVING BRAINLIEST* EXCERPT:Morris Remembers the SteamshipWhen we got on the Rotterdam, we had a field day. One, I was never on ship before and it was absolutely, I was awed by it. It was overwhelming. All the people and boarding the ship, it was all a brand new experience. We left Rotterdam, we set sail and about half an hour after the ship started my sister got very sea sick. It took us fourteen days to cross the Atlantic and in the entire crossing, she was in steerage, and the only time she came up for a breath of fresh air was just about half hour before we saw the Statue of Liberty. Now the experience of the ship, being young was an adventure in that particular situation, because my brother and I, we would sneak aboard, we were always chased. And we saw some people who traveled maybe in first or second class and we looked upon them as royalty, but we were confined primarily to steerage. Steerage was one huge place. It was the lowest deck. The stench, it was the summer, in August, the humidity, the heat, having no air-conditioning, having cooling facilities, it was very hot, compounded by the fact that there must have been anywhere from 2 to 300 people in that huge carnivores area. The body smells, the body odors, the lack of sanitation, The lack of any kind of facilities, washing, there is no such thing as washing or bathing. The stench, the vermin, it was rat infested. But, being children, I guess, it had its advantages, in this case because we were always try to get out of there. We tried to go, get out of the steerage, get out of our babble voices, get out of the heat and stench and get on the main deck. We all were permitted to stay there a little while but we were constantly chased. But the crossing went for us, for me in particular, went very quickly.When should the reader first stop and ask a question when reading Morris Remembers the Steamship in the Ellis Island Oral History Project excerpt, and which question should the reader ask to understand Morriss voyage?O A reader should stop after the first sentence and ask, What is the Rotterdam?O A reader should stop after the second sentence and ask, How did the speaker feel about being on the ship?O A reader should stop after the second sentence and ask, How did the speaker feel about being on the ship?O A reader should stop after the third sentence and ask, Is the speaker traveling alone? How do you do this question? And why is the answer E and not A? The higher the beanbag rises, the greater the richard is walking around his neighborhood. if he walks 1/3 mile in 1/6 hour, how fast is richard walking, in miles per hour? Riddle Time!!!if u guess these 3 riddles right. i'll give u a brainllest! 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