Giovanni justifies whether the expression -4x-8 is equivalent to -2(x+1)-2(x+3) by letting x=3 in both expressions. What is the value of each expression when x=3.
3 and -20
4 and 4
-20 and -20
3 and 4

Answers

Answer 1

Answer:

The value of each expression when x=3 will be -20 and -20.

Step-by-step explanation:

Given the expression

-4x-8

setting x=3

= -4(3)-8

=-12-8

=-20

Given the expression

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

setting x=3

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

=-2(4)-2(6)

=-8-12

=-20

so we conclude that the value of both the expressions was -20 when we substituted the value x=3.

Therefore, the value of each expression when x=3 will be -20 and -20.


Related Questions

Please help

Show work if you can

Thank you!

Answers

Answer:

y= -1/2 + 2

Step-by-step explanation:

To find m or the slope you need to find 2 locations that the line intercepts a point on the graph. I used (0,2) and (2,1).

Then you find the difference of the x and y coordinates. (x,y)

X-coordinates: 0 and 2.    0 - 2 = -2

Y-coordinates: 2 and 1.      2 - 1 = 1

A slope fraction is the difference of y over the difference of x coordinates. It would be written as 1/-2 or -1/2. m= -1/2

To find the b value, just look at the y-intercept or where the line intercepts the y-axis. Which is at (0,2). So b=2

Is -4(5x)=12 true false or open

Answers

Answer:

False because its -4 if it

represent the following sentence as an algebraic expression , where '' a number '' is the letter x . you do not need to simplify
7 lesss than the product of 5 and a number

Answers

5x -7
That’s the expression, I believe

Answer:

5x-7

Step-by-step explanation:

5x-7

Product=multiply so 5x and less than is minus so 5x-7.

Hope this helps :D

What is the equation of the line that passes through the point (5,-2) and has a slope of -2/5?​

Answers

Answer:

y= -2/5x -2

Step-by-step explanation:

y = mx + b

jxjxjxjxnxjddjdjdjdjj

Using the table from number seven, if an orphaned pet is picked at random what is the probability that it is a cat?
Please answer ASAP I need to pass this class

Answers

Answer:

22.9%

Step-by-step explanation:

The total at the bottom is 22.9%

Please Help me. Thanks​

Answers

y = 3/2x + 3

I hope this helps!

Does anyone know the answers this is Gina Wilson

Answers

Answer:yes

Step-by-step explanation:

write 0.00000000018 in a scientific notation

Answers

Answer:

[tex]1.8*10^{-10}[/tex]

Step-by-step explanation:

To find the number in scientific notation you want to find how many times you have to move the decimal to get the decimal to be right after the first non-zero number. If you move to the left the exponent is positive and if you move it to the right the exponent is negative. The answer would be [tex]1.8*10^{-10}[/tex].

In a seminar of 1200 people, 65 percent were women, How many men were in the seminar?

Answers

Answer:

420

Step-by-step explanation:

If there were 1200 people, and 65 percent were women, that means the rest of the crowd are men, which is 35 percent. By multiplying 35 percent by the overall population, 1200, (1200*35/100), you'll get 420 men.

Answer:

Step-by-step explanation:

The answer is 420

four ninths plus nine eighteenths :]

Answers

Answer:  17/18

In words, this is seventeen eighteenths

==========================================

Work Shown:

4/9 + 9/18

8/18 + 9/18 ... see note below

(8+9)/18

17/18

----------------

note: To go from 4/9 to 8/18, we multiply top and bottom by 2. So that's why 4/9 = 8/18.

The diagram below shows a visual representation of why 4/9 = 8/18.

In the top row, I've drawn out 9 rectangles of the same size. Then I've shaded 4 of the 9 rectangles to represent the fraction 4/9. In the bottom row, I've cut each of those 9 rectangles into two smaller equal pieces, so we have 9*2 = 18 rectangles now. Note how the shaded regions are the same size, so this shows 4 green regions doubles to 2*4 = 8 yellow regions; therefore 4/9 is the same as 8/18.

Answer: its 17/18

Step-by-step explanation:

hope it help's ヾ(•ω•`)o

HELP Please!!!!!!! Asap

Answers

Answer:

bottom right is correct

Step-by-step explanation:

Find the slope of the line that passes through: (10. 1) and (5.2)​

Answers

Answer:

1/-5 should be the answer

Which equation best describes the line in the graph?

Answers

Answer:b

Step-by-step explanation:

Give brainliest

Answer:

B

Step-by-step explanation:

The question is looking for an equation in slope-intercept form which is y=mx+b where m is the slope and b is the y-intercept. The y-intercept is +4, which all of the answers show, so you must find the slope.

The slope is the change in y over change in x, more commonly referred to as rise over run. So count how many units the graph changes vertically and horizontally, in this case, 1 up and 2 right, so the slope is equal to 1/2. If you have a graph where the line shifts up and left, or down and right, then the slope is negative. Additionally, one way to visually check your work is to remember slopes equal to less than -1 or greater than +1 will be steeper while fraction slopes will make the slope flatter; basically the closer to zero the less steep.

There are two types of cellular phones, handheld phones (H)that you carry and monile phones (M) that are mounted invehicles. Phone calls can be classified by the travelingspeed of the user as fast (F) or slow (W). The probabilitymodel for this experiment has the following information: P[F] =0.5, P[HF] = 0.2, P[MW] = 0.1. What is the sample space ofthe experiment? Calculate the followng probabilites:a) P[W]b) P[MF]c) P[H]

Answers

Answer:

Explained below.

Step-by-step explanation:

(1)

Sample space is a set of all possible outcomes of an experiment.

The sample space in this case is:

S = {HF, HW, MF, MW}

(a)

Compute the value of P (W) as follows:

P (F) + P (W) = 1

P (W) = 1 - P (F)

P (W) = 1 - 0.50

P (W) = 0.50

(b)

Compute the value of P (MF) as follows:

P (HF) + P (MF) = P (F)

P (MF) = P (F) - P (HF)

P (MF) = 0.50 - 0.20

P (MF) = 0.30

(c)

Compute the value of P (M) as follows:

P (M) = P (MF) + P (MW)

P (M) = 0.30 + 0.10

P (M) = 0.40

Compute the value of P (H) as follows:

P (H) + P (M) = 1

P (H) = 1 - P (M)

P (H) = 1 - 0.40

P (H) = 0.60

The absolute value of ______ is the same number

Fill in the blank

Answers

Answer: I dont know what the fill in the blank would be, but simply make any number not negative

Step-by-step explanation: Example |-3| = 3

there are always positive

what does x = ? need help with the pythagorean theorem

Answers

Answer:

x = 13

Step-by-step explanation:

x = hypotenuse which is c in the Pythagorean theorem

c = √a^2 + b^2

c = √12^2 + 5^2

c = 13

john is 2 years younger than his sister, annie. Last year, John was half Annie's age. How old are john and Annie now?

Answers

Answer:

John is 3 and Annie is 5 because to be half of someone's age while being to years younger it would have to be 2 and 4 - but then a year passed and so the are now 3 and 5.

Step-by-step explanation:

The present  age of John is  3 years

The present age of Annie is 5 years  

Given that John is 2 years younger than Annie's age

Let the present age of John be "J"

Let the present age of Annie be "A"

According to the given situation

[tex]\rm J = A -2........(1)\\[/tex]

One year ago the age of John = [tex]\rm J-1[/tex]

One year ago the age of Annie = [tex]\rm A -1[/tex]

According to the given situation

[tex]\rm\dfrac{A-1}{2}= J-1.........(2)[/tex]

On solving for equations (1) and (2) we get

A = 5 and J = 3

So the present  age of Annie is  5 years

The present age of John is 3 Years  

For more information please refer to the link given below

https://brainly.com/question/21835898

In a newspaper, it was reported that yearly robberies in Springfield were down 25% to 78 in 2013 from 2012. How many robberies were there in Springfield in 2012?

Answers

There were 30% in 2012 to 2013

pls help!!

A chest was resting on the ocean floor 500
feet below the surface. It was lifted to the deck of a ship 16 feet above the surface. How far was the chest lifted?

I need you to :
Define the variable
Write the equation
& The solution.

Answers

Answer:

I don't know about the variable but I believe that the equation is -500+516=16 and the solution is 16

Step-by-step explanation:

Nellie says that 7.8 is smaller than 7.74 because 8 is a smaller number than 74. Explain her mistake.

Answers

Answer:

74

Step-by-step explanation:

because nelly forgot the decemal placement. She said 74 instead of 7.74

Write an equation for this $13 more than twice the cost of a video game is $67. Find the cost of the video game.

Answers

Answer:

13+2x=67 soooooo x = 27 so the video game is $27 and thats the equation

Step-by-step explanation:

PLEASE HELP MEH NOW!! I WILL MARK BRAINLIEST 1/8 divided by 5

Answers

Answer:

1/40 or .025

Step-by-step explanation:

Just flip the 5 then multiply instead of dividing.

[tex]\frac{1}{8}*\frac{1}{5}[/tex]

You turn 5 into 1/5 by flipping it.

When you multiply them you get.

[tex]\frac{1}{40}[/tex]

or

.025

Hope this helps! Have a blessed day!

i need the answer asap i’ll make you the brainliest

Answers

Answer

the second one

The number of muffins varies directly with the amount of flour you use. A
recipe for 24 muffins calls for 3 cups of flour. How many cups of flour do you
need to make 72 muffins?

Answers

24*3=72

3*3=9

You need 9 cups of flour to make 72 muffins.

A 10 kg bag of mangoes costs $12.
Find the price per kg of mangoes.

Answers

Answer:

1.2

Step-by-step explanation:

i'll mark you as brainliest​

Answers

Answer:

y = x - 2

Step-by-step explanation:

.

Aaron turned on his air conditioning and the temperature in his apartment decreased 6 degrees. Write an integer to represent the change in temperature.

Answers

Answer:

c + 6 degrees= x

Step-by-step explanation:

please help. i am desperate. will mark brainliest if work is shown. please.

Use your calculator to find the smallest solution to -5e^(-4x+2)+3=1/2log(x^2+1) and describe the steps you used. Round your answer to three decimals.

Answers

please dont count on me but 0.23856062736

How do regulations influence wages?
O A. They increase wages regularly over time.
O B. They create laws dealing with jobs and income.
C. They set a ratio of productivity to wages.
D. They set the market value of all types of jobs.

Answers

Answer:

b

Step-by-step explanation:

There are certain reasons that the regulations influence wages, among them the main influence is that they create laws dealing with jobs and income.

What are wages?

A wage is a sum of money paid by an employer to an employee for work completed over a set period of time.

Compensatory payments, such as minimum wage, annual bonuses, and prevailing wage and remunerative payments, such as prizes and tip payouts, are examples of wage payments.

These wages are influenced by the regulations in which the laws dealing with jobs and income.

Therefore, option B is correct.

To learn more about the wages, refer to:

https://brainly.com/question/13847060

describe the slope of the line passing through points A(-2,3) and B(4,-3)

Answers

Answer:

0/2 is ZERO is positive

Step-by-step explanation:

slope = y2 - y1 / x2 - x1

slope = -3 - 3 / 4 - (-2)

slope = -6/6

slope = -1

hope this helped :)
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