Can someone please explain why x= -2! ASAP!!

Answers

Answer 1

Because you add both negative x’s which is -2 and add the -6 in the right side so then it’s -2x=4
Divide and you get x=-2

Answer 2

9514 1404 393

Answer:

x = -2 because that is the value that makes the equation true

Step-by-step explanation:

Minus signs are everywhere. They can all be eliminated by multiplying both sides of the equation by -1.

-1(-x -6 -x) = -1(-2)

(-1)(-x) +(-1)(-6) +(-1)(-x) = 2 . . . . . distribute the -1

x + 6 + x = 2 . . . . . . . . simplify

x + x + 6 = 2 . . . . . . . . rearrange

(1 +1)x +6 = 2 . . . . . . . . factor, using the distributive property

2x +6 = 2 . . . . . . . . . . . simplify

2x +6 -6 = 2 -6 . . . . . . subtract 6 from both sides

2x = -4 . . . . . . . . . . . . . simplify

(2x)/2 = (-4)/2 . . . . . . . divide both sides by 2

x = -2 . . . . . . . . . . . . . . simplify

x is -2 because that is the value we get when we apply the properties of equality to the equation. We can check to see if it works in the original equation.

Check

-x -6 -x = -2

-(-2) -6 -(-2) = -2 . . . . put -2 where x is

2 -6 +2 = -2 . . . . . . . . simplify the signs

-4 +2 = -2 . . . . . . . . . . add the first two terms (could do all at once)

-2 = -2 . . . . . . . . yes, the value of x=-2 makes the equation true

_____

Additional comment

The properties of equality we're concerned with here are the multiplication property of equality, the addition property of equality and the division property of equality. Respectively, these tell us that multiplying, adding, or dividing both sides of the equation by the same number doesn't change the value of the variable.

These properties are essential to understanding how algebra works.

Related Questions

Guillermo bought some reams of paper for $10 each and a $100 printer. He spent a total of $450. Write and solve an equation to find the number of reams of paper Guillermo purchased.

Answers

Answer:

x = amount of paper

10x + 100 = 450

10x = 350

x = 35

Brainiest plz :)

Billy has 8 red marbles, 6 blue marbles, and 4 green marbles in a jar.
What is the probability that Billy would select a red marble?
A. Between 10% and 20%
B. Between 20% and 30%
c. Between 30% and 40%
D. Between 40% and 50%

Answers

Answer:

Step-by-step explanation:

pick A cause 8 6 and 4 = 18

D

the total marbles are 18 so you divided 18 and 100 to get 5.55, then you multiply by the number of marbles and get 44.4

hope this helps

Help pls and thank you:)

Answers

I think Z=16 I don’t know exactly sorry

Finding missing angles please help!!! pls

Answers

Answer:

x = 15

Step-by-step explanation:

Answer:

Step-by-step explanation:

What is the scale factor of Figure B to Figure A in the simplest form?

Answers

simple just multiply 10X25X21.5 for A and the same for B

Which points are reflections of each other across both axes? (-2, 8)and(2, -8) (-7, -1)and(-7, 1) (5, -6)and(-5, -6) (4, -3)and (-3, 4)

Answers

(-2,8) and (2,-8) if you put it on the chart both points should be reflecting each other across (0,0) which is both axes

PLEASE HELP ME!!
let g be the function given by g (x) = 3x^4 - 8x^3. At what value of x on the closed interval [ -2,2 ] does g have an absolute maximum

Answers

Take the derivative:
g’(x) = 12x^3 - 24x^2

Set equal to zero and solve:
0 = 12x^3 - 24x^2
0 = 12x^2 (x - 2)

x = 0 or x = 2

Plug back into original
g(0) = 3(0^4) - 8(0^3)
g(0) = 0 - 0
g(0) = 0

g(2) = 3(2^2) - 8(2^3)
g(2) = 3(4) - 8(8)
g(2) = 12 - 64
g(2) = -52

There is an absolute max at (0,0) or when x = 0

The value of x on the closed interval [ -2,2 ] that g has an absolute maximum is 0

Given the function [tex]g (x) = 3x^4 - 8x^3[/tex]

The function is at a maximum at g'(x) = 0

Differentiating the function given:

[tex]g'(x)= 12x^3-24x^2\\0= 12x^3-24x^2\\ 12x^3-24x^2=0\\12x^2(x-2)=0\\12x^2=0 \ and \ x - 2 = 0\\x = 0 \ and\ 2 \[/tex]

Substitute x = 0 and x = 2 into the function;

g(0) = 3(0)^3 - 8(0)^3

g(0) = 0

Since the range of the function is least at x = 0, hence the value of x on the closed interval [ -2,2 ] that g has an absolute maximum is 0

Learn more function here: https://brainly.com/question/10439235

5 m
m
7 깄
0
M
K
5
Solve for the perimeter.
3 m
P=

Answers

Answer:

It might be C if im wrong sorry

Step-by-step explanation:

Help with this and I will give you the brainiest and you get 10 points

Answers

Answer:

1.-22

2.2

3.48

4.3b

5.1+5v

6.2m+20

7.p=-9

8.x=8

Question Help
Think About the Process A jar contains only pennies, nickels, dimes, and quarters. There are 29
pennies, 16 dimes, and 17 quarters. The rest of the coins are nickels. There are 74 coins in all. How
many of the coins are not nickels? If n represents the number of nickels in the jar, what equation could
you use to find n?

Answers

Answer:

62 coins are not nickels. you could just add the pennies, dimes, & quarters. those totals are given. So

29+16+17= 62

or if you want to impress then start with the total and subtract each given coin count

74-29-16-17=12

74-12=62

WILL GIVE BRAINIEST!!! IF UR ANSWER IS RIGHT

Answers

Answer:

-1

Step-by-step explanation:

the slope of this one is y=x-21

in order for it to be perpendicular the sign changes and the slope flips

but because the slope is 1 you just change the slope to -1

Find the 12th term given the arithmetic sequence: an = -5n +32

Answers

Step-by-step explanation:

step 1. a12 = -5(12) + 32

step 2. a12 = -60 + 32

step 3. a12 = -28.

Can somebody help??....

Answers

The missing numbers are 27 and 6.. the rule of the sequence is minus 6

a fence is being built around a rectangular a garden that is 8 1/2 feet by 6 1/3 feet. fencing comes in panels. each panel is 2/3 of a foot wide, how many panels are needed

Answers

answer: they need 43 panels

substitution method
a=-b+5
2b+a=11

Answers

Answer:

a = -1

b = 6

Step-by-step explanation:

a = -b + 5

2b + a = 11

2b + (-b + 5) = 11

2b - b + 5 = 11

b + 5 = 11

b = 11 - 5

b = 6

2b + a = 11

2(6) + a = 11

12 + a = 11

a = 11 - 12

a = -1

Please Solve this. Last Question of the Day So Points Increase a little bit. :)

Answers

found this, hope it helps

Answer:

5 cookies left

Step-by-step explanation:

First you make the fraction equal by multiplying them

2/3 multiply both numerator and denominator by 4

= 8/12

Now you divide 60 by 12 to find the amount to make the denominator 60

60 divided by 12 = 5

8/12 multiply both numerator and denominator by 5

= 40/60

So now we know the amounts

She gave 40 away so she has 20 left (60 - 40 = 20)

Now make 3/4 numerator and denominator by equal to 20

Multiply them by 5

15/20

She had 5 cookies left

Select two ratios that are equivalent to 8:20

Answers

Answer:

The answer is B, C, and D

Step-by-step explanation:

If you simplify each of those ratios, they'll be equivalent

Answer:

B and C

Step-by-step explanation

The first one is B because 2/8 is 4 and 10/20 is 10

The second one is C because 8x3 is 24 and 20x3 is 60

My teacher always says everything you do to one side you have to do to the other :)

Hope this helps! :D

Emily puts $10,000.00 into an account which earns 11% interest, compounded quarterly. How
much will she have in the account after 5 years? Round your answer to the nearest cent.

pls hurry it’s for a math test

Answers

s 5on2mllos pnor que creo que esesa cantdadi

The following table shows the number of fire hydrants in each neighborhood overseen by Fire District 9

Answers

Answer:

Step-by-step explanation:

The median, is just the middle number in a set of numbers.

In this case, our set is: 17, 8, 15, 21, 12.

However, the set must be in increasing order, so the set becomes: 8, 12, 15, 17, 21.

This gives us the median, which is the middle number, to be: 15.

Let me know if this helps!

Answer:

DO NOT PUT 10 PUT 15 OK

Step-by-step explanation:

I DID THE KHAN

PPEEEEEEEEEEEEEE

Is the point \displaystyle (1,2)(1,2) a solution to the system of equations \displaystyle y-10x=-8y−10x=−8 and \displaystyle y=-8x+10y=−8x+10?

YES
NO

Answers

No because it’s just no

No that point is not

I’m stuck on this! I need help

Answers

Answer:

I believe the answer is 20.35 x [tex]10^{4}[/tex].

Step-by-step explanation:

Observe and record the coordinates of the transformation shown below. How can this transformation be represented algebraically?

Answers

Answer: ( x + 7, y - 3)

Step-by-step explanation:

Pray for me I am taking a quiz and I been stuck on this question -4+5=1
Helppppp
Show your work !

Answers

Answer:

Add −4 and 5.

1=1

Step-by-step explanation: like hopefuly this can helpp

write 8,000,000 in scientific notation ?

Answers

Answer:

A: 8 x 10^6

Step-by-step explanation:

I NEED THE NOE HURRY!!!!!!! i will mark u Brainliest

At most, Kyle can spend $50 on sandwiches and chips for a picnic. He already bought chips for $6 and will buy sandwiches that cost $4 each. Write and solve an inequality to show how many sandwiches he can buy. Use s to represent the number of sandwiches. Write your final answer in a complete sentence.

Answers

The answer is 11. The problem is worked out in the picture.

Please, help me out <3

Answers

Answer:

Step-by-step explanation:

Every input can only have one output for it to be considered a function. There are repeats of x values with different y values in all of these except for D so D is the correct answer.

2r in 3 like terms.

i need helpp!

Answers

Answer:

no se lo ablas

Step-by-step explanation:

Answer:

Can you please rephrase that question I'm not understanding.

Step-by-step explanation:

which equation represents the line that has a slope of 4 and passes through the point (2, 7)?
(A) y = 4x - 1
(B) y = 4x + 15
y=x+4
D y =
= 2x-4

Answers

Answer:

A) y = 4x - 1

Step-by-step explanation:

y = mx + b

y = 4x + b

7 = 4(2) + b

7 = 8 + b

-1 = b

y = 4x - 1

what is the answes please I need it!

Answers

the answer is -4 so the first one

Equations with one solution are different from equations with special solutions
because?

Answers

Answer:

they are much harder to be solved

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