If -2x+4= 8, will x be positive or negative? Without solving the equation, explain how you know.


Answers

Answer 1

Answer:

x is negative

Step-by-step explanation:

I know x will be negative without solving the equation because we can see that both sides equal positive 8 and for -2x to be positive the x value must be negative. when two negative values are multiplied they change into positive. If the x value was Positive this equation would be false.

Hope this helps you

Answer 2

Answer:

Yes, x will be negative.

We are given:

-2x + 4 = 8

This means that "something", in this case -2x, added to 4, equals 8

The only thing that can add to 4 and equal 8 is 4.

So, that means -2x has to equal 4, which is a positive number.

Negative x negative = positive.

-2 is already a negative number, so x has to be a negative number.


Related Questions

1/2(-4+6n)=1/3n+2/3(n+9)

Answers

The correct answer is n=4:)

Answer:

n= 4

Step-by-step explanation:

Translate the sentence six less than the product of four and a number is -2 into an equation

Answers

Answer:

4x-6=-2

Step-by-step explanation:

This is the mathematical form of the equation.

After 8 months, you have been able to save $937. You have the ability to save $130 per month. Build a model and write an explanation of the y- intercept. What is the rate of change?

Answers

Given:

After 8 months, you have been able to save $937.

You have the ability to save $130 per month.

To find:

The model for the situation and y-intercept and rate of change.

Solution:

Let y be the ability to saving after x months.

Ability to save in one month = $130

Ability to save in x months = $130x

So, total ability is

[tex]y=130x+b[/tex]      ...(i)

where, b is initial savings.

After 8 months, you have been able to save $937.  So, the point is (8,937).

Put x=8 and y=937 in (i),

[tex]937=130(8)+b[/tex]

[tex]937=1040+b[/tex]

[tex]937-1040=b[/tex]

[tex]-103=b[/tex]

So, the y-intercept is -103. Here, negative sign represents that we cannot able to save initially or we have loan or liabilities of $103.

Put b=-103 in (i).

[tex]y=130x+(-103)[/tex]  

[tex]y=130x-103[/tex]

On comparing with slope intercept form, we get

Slope = 130 and y-intercept = -103

Therefore, the slope is 130 and y-intercept is -103.

What is the sign of 9(-0.5)

Answers

Hi

For a multiplication , law  sign state : if the two terms of multiplication are of the same sign, result is  positive.  Otherwise, it's negative

here  9 is  positive, and  -0.5  negative.  The two terms have  contrary signs, then the result will be  negative.  

Suppose Jerome reads the following numbers of pages each day. Will he meet his goal of reading at least 85 pages by the end of the day Friday?

Answers

Answer:

Step-by-step explanation:

Jerome has already read 50 pages of a novel and read p pages each day from Monday to Friday.

If Jerome read at least 85 pages by the end of Friday, inequality will be,

50 + 5p ≥ 85

If Jerome reads 6 pages each day,

For p = 6,

Inequality will be,

50 + 5(6) ≥ 85

80 ≥ 85

It's not true.

Therefore, he will not meet his goal.

If p = 7,

Inequality will be,

50 + 5(7) ≥ 85

85 ≥ 85

It's true.

Therefore, he will meet his goal.

If p = 8,

Inequality will be,

50 + 5(8) ≥ 85

90 ≥ 85

It's true.

Therefore, he will meet his goal.

1. Will not

2. Will

3. Will

The product of the ages of two adults is 572. Find their ages.

Answers

Answer:

?

Step-by-step explanation:

If you divide 572 by 2 you get 286...

Answer:286

Step-by-step explanation: thats a real big number but half of 572 is 286 and you can figure that out by diving by 2

Answer this if u love yo mama

Answers

Answer:

the answer 50

Step-by-step explanation:

this is because of the triangle therom thing which is all triangles are equal to 180 degrees which means you gotta add 35+95 which gives 130 then subtract 180-130 which equals 50 and thats the missing angle.

Answer:

50

Step-by-step explanation:

'Cause I love my mama UnU

12. DEDUCE The graph of a linear
equation is in the form y = mx + b.
Are there any values of m that would
result in the graph not representing
a function? Explain your ans
answer.
Please help it’s due today I will mark you brainless

Answers

Answer:

en contexto, ora al de arriba pa que te ayude porque nose nada xd

Step-by-step explanation:

ASAP answer it please and thank uuu!!!!!

Answers

Answer:

As of what I see, your answer is all of them.

m^2= 100, n^2 = 400, k^2=1600. What is
the greatest value of 2m + 3n + 4k = ?
A) 270 B) 260 C) 250 D) 240

Answers

Answer:

D).

Step-by-step explanation:

usually you got = 2(10)+3(20)+4(40) =240

Pls help it's due tonight​

Answers

Answer:

6.25 colonies of bacteria per +pH change from 7 to 9

Step-by-step explanation:

It seems to go from 57.5 to 70 or maybe 57 or 58

Either way I will go with my guess of 57.5

Rate of Change= (70-57.5)/(9-7)=(12.5)/(2)=6.25 rate of change for colonies of bacteria per positive pH change from 7 to 9

Help!! I will mark brainiest!!

Answers

Answer:

b = 148.5052112

Step-by-step explanation:

To find the value of b we will use the trigonometry functions

∵ The triangle is a right triangle

∵ The measure of one of its acute angles = 68°

∵ The length of the side opposite to the angle of measure 68° is b

∴ The opposite side = b

∵ The length of the side adjacent to the angle of measure 68° is 60

∴ The adjacent side = 60

∵ The function tan(x) = [tex]\frac{opposite}{adjacent}[/tex]

∴ tan(68°) = [tex]\frac{b}{60}[/tex]

→ Multiply both sides by 60 to cancel the denominator of the right side

∴ 60 × tan(68°) = b

∴ 148.5052112 = b

b = 148.5052112

Answer:

b = 148.5052112

Step-by-step explanation:

Tom's recipe requires 8 cups of sugar to make 40 sugar cookies. How many
sugar cookies will 120 cups of sugar make? *

Answers

8 cups/ 40 cookies

1 cup/ 5 cookies
x 120
—————————
120 cups makes 600 sugar cookies
He beat me to it :(

I’m sad

81a + (- 18)
how do you factor the expression

Answers

Answer:

9(9a-2)

Step-by-step explanation:

81a + (-18)

= 81a - 18

= 9 (9a - 2)

Answer:

9(9a-2)

Step-by-step explanation:

32x + 342x thhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Answers

Answer:

374x

brrrrrrrrrrrrruhhhhhhhhhhhhhh

Answer:

374x

Step-by-step explanation:

Just add 32 and 342 together

32 + 342

374

Then add the x back on

374x

Hope this helped :)

Use synthetic division to solve (2x^3+4x^2-35x+15)/(x-3). What is the quotient?

Answers

Answer:

the quotient is 2x^2+10x-5

Tom bought 3 boxes of books at a yard sale. If each box had 2 books how many books did he Buy ?


i will be giving brainliest.

Answers

Answer:

6

Step-by-step explanation:

2 books in each box.

There are three boxes

2 times 3 equals 6

Jennifer walks 3/4 mile in 1/4 hour, and Gavin walks 1/8 mile in 1/12 hour. Part A. What is Jennifer's walking rate, in miles per hour? Part B. What is Gavin's walking rate, in miles per hour? Part C. Jennifer and Gavin both plan on walking 4.5 miles, and they want to finish at the same time. If Gavin starts walking at 1:00 pm, at what time should Jennifer start walking? Use words, numbers, and/or pictures to show your work. Write your answer(s) on the paper provided.

Answers

Answer:

Step-by-step explanation:

Part A: 3/4 divided by 1/4= 3/4 * 4/1 = 3, Jennifer walks 3 miles per hour.

Part B: 1/8 divided by 1/12= 1/8 * 12/1 = 1.5 or 1 and 1/2 miles per hour

For Part C I dont know, Sorry guys

WILL MAKE BRAINLIEST! Let sin 21 = 0.358. What is the value of x for cos x = 0.358

Answers

Answer:

The value of x is 69°

Step-by-step explanation:

In a right angle triangle, if m and n are the two acute angles on it, then

m + n = 90° sin(m) = cos(n)cos(m) = sin(n)

That means if sin(m) = cos(n), then m + n = 90°

Let us use these facts to solve the question

∵ sin(21°) = 0.358

∵ cos(x°) = 0.358

→ That means sin(21°) = cos(x°)

sin(21°) = cos(x°)

→ By using the facts above

21 + x = 90°

→ Subtract 21 from both sides

∵ 21 - 21 + x = 90 - 21

x = 69°

The value of x is 69°

Kale is hiking 2,345 ft above sea level. The peak of the mountain he is climbing is 3,283 feet above sea level . What is the vertical distance between kale and the mountain peak ?

938 ft
942 ft
1,142 ft
5,628​

Answers

Answer:

a

Step-by-step explanation:

Answer:

so A. is the correct answer

Step-by-step explanation:

If Kale is at 2345 feet and needs to reach 3283, he will need to travel another 938 feet.

I HAVE 5 MIN TO TURN THIS IN!!!! PLEASE HELP ME!!!
IT'S IN THE IMAGE BELOW

Answers

Answer:

a.  x = 8 yearsb.  52,000

Step-by-step explanation:

company A = 28,000 + 3,000 (x)

company B = 36,000 + 2,000 (x)

where x = no. of years.

company A = company B

28,000 + 3,000 (x) = 36,000 + 2000 (x)

3,000 (x) - 2,000 (x) = 36,000 - 28,000

1,000 (x) = 8,000

x = 8,000

     1,000

x = 8 years

plugin value of x = 8 into company A and B

company A = 28,000 + 3,000 (8)

company A = 52,000

company B = 36,000 + 2,000 (8)

company B = 52,000

cordenadas cartesianas​

Answers

what is this for ? is this spanish or what can u specify

Simply 8(x-3)+12(x+2)

Answers

Answer:

20x

Step-by-step explanation:

First.... distribute the 8 and 12 to the perenthesis next to them. Then, all like terms. The final answer will be 20 * x or 20x.

At a model rocket competition, Mrs. Jennings launches a rocket is launched upward
from the ground with an initial velocity of 138 feet per second.
The formula for vertical motion is
h(t) = 0.5at? + vt +s, where the gravitational constant, a, is -32 feet per second squared, v
is the initial velocity, and s is the initial height. Time t is measured in seconds, velocity
v is measured in feet per second, and heights h and s are measured in feet.
Write the function that describes the height, h in feet, of the rocket l seconds into
launch

Answers

Answer:

The function that describes the height, h in feet, of the rocket, t seconds into launch is h = -16·t² + 138·t

Step-by-step explanation:

The given parameters are;

The initial velocity of the rocket, v = 138 feet per second

The vertical motion formula = h(t) = 0.5·a·t² + v·t + s

The gravitational constant, a = -32 ft./s²

s = The initial height of the rocket

Therefore, he have;

The height of the rocket, t seconds seconds into launch is given as follows;

Height = h = h(t) - s = 0.5·a·t² + v·t

Substituting the known values gives;

h(t) - s = 0.5 × (-32) × t² + 138 × t = -16·t² + 138·t

h = -16·t² + 138·t

The function that describes the height, h in feet, of the rocket, t seconds into launch is h = -16·t² + 138·t.

What is the ratio of 120%

Answers

Answer:

5: 6

Step-by-step explanation:

becuase it was basically 100:120 but divide it by 20 and thats  how you get 5;6

(2,-1),(4,5),(6,15),(8,29),(10,47) write a linear equation that represents y as a function of x

Answers

Answer:

Line ____        Ear

The shadow of an object varies directly with its height.The shadow of a 25 ft trees is 6 ft.How long is the shadow of an 18 ft tree

Answers

Answer:

Well i got 4.32 but im not completely sure

Step-by-step explanation:

Question 7:
Given two terms in an arithmetic sequence find the nth term.
a) 18th = 3362 and 38th= 7362

گرم
a​

Answers

The answer is:

Nth term=200n-238

hurryyyyyyyyyyy 5/6 - 1/4=
yes subtraction

Answers

Step-by-step explanation:

(5x4)/(6x4) - (1x6)/(4x6)

=20/24 - 6/24

= (20-6)/24

=14/24

=7/12

give me brainliest

What is y? (look at the picture I attached, thank you!)

Answers

Answer:

[tex]y = \frac{19}{5} [/tex]

Step-by-step explanation:

[tex] \frac{2y - 4}{y + 7} = \frac{1}{3} [/tex]

or, 3(2y-4) = 1(y+7)

or, 6y-12 = y +7

or, 6y-y = 7+12

or, 5y = 19

or, y = 19/5

Answer:

y=19/5

Step-by-step explanation:

Hope this helps!

Other Questions
In 1793, Eli Whitney invented the cotton gin. How did this invention influence the price of cotton? Why would a large publically traded corporation likely prefer issuing bonds as a way to raise new money as opposed to issuing more shares?A. the rate of return the corporation promised will be more difficult to deliverB. more shares will dilute the existing value of the stock, causing its market price to fallC. the market will view the new share issue as a sign the company is in financial difficultyD. issuing bonds is a more secure method for corporations to raise needed money _compounds do not contain carbon Which element of musical notation does this image represent?A.bass clefB.beamC.grand staffD.treble clef Solve these exercises in Substitution method a) x+3y=11 4x-3y=-1 b) x+y=5 3x-2y=10 A server process in Host B has a welcoming socket at port 977. What will trigger the server process to create a connection socket? will give brainlest plz help!!!Which relation is a function? 1:1.2 as a fraction pls tell me in one minute PLZ HURRY IT'S URGENT!!!Petrucio has $50 to spend on entertainment. Music downloads are $2.00 each and movie downloads are $5.00 each. What possible combinations can Petrucio buy? SELECT ALL THAT APPLYoptions:8 songs and 6 movies20 songs and 2 movies4 songs and 10 movies7 songs and 8 movies 4. A math tutor makes $12 an hour for the first 40 hours she works during a week and $24 an hour for each hour over 40 hours. As an exercise for her students, she had them graph her total weekly pay in dollars as it relates to her number of hours worked. Now you will do the same. (6 points: Part I - 1 point; Part II - 2 points; Part III - 1 point; Part IV - 2 points)Part I: What equation models the tutor's total weekly pay y in dollars as it relates to the number of hours x that she has worked if the tutor has worked 40 hours or fewer?Part II: What equation models the tutor's total weekly pay y in dollars as it relates to the number of hours x that she has worked if the tutor has worked more than 40 hours?Part III: Combine the slope-intercept equations found in parts I and II into one piecewise equation.Part IV: Graph the tutor's total weekly pay in dollars as it relates to her number of hours worked by using the piecewise equation from part III and the coordinate grid below. For which system of equations would you need to estimate the solution? What is the value of the expression below?(9.5 minus 3 times 1 and one-half) divided by 0.50.551019.5 If x (x+y) = 27 and y (x+y) = 54, what is the value of (x+y)^2? Triangle TUV, with coordinates T (3, 3), U(3, -2), and V(-7,3), undergoes a dilation about the origin to produce triangleWXY. If triangle W XY has coordinates W(6,6), X(6,-4), and Y(-14,6), what is the scale factor? You are using 1000 feet of fence to create a rectangular enclosure. Let X represents length of the rectangle. Please use proper unit in each answer. A rectangle drawing could help. 1. Express the width of the rectangle in terms of the length X. 2. Express the surface area of the rectangle in terms of X. 3. What value of X gives the maximum surface area. 4. What is the maximum surface area? What formed between Australia and Antartica? What was the result of this? A water chips system in a garden uses 2/3 cup of water every 1/6 of an hour how much water is used one hour (8.4C) Ken has a weekly goal for the number ofcalories he will burn by taking brisk walks. Theequation y = -300x + 2400 represents thenumber of calories, y, Ken has left to burn afterx hours of walking. What is the slope in thissituation? I need help quick please What is the solution to the equation above