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.

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Step-by-step explanation:

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Answer:

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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

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Answer:

Step-by-step explanation:

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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

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10x = 350

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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:

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

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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.

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

write 8,000,000 in scientific notation ?

Answers

Answer:

A: 8 x 10^6

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

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8.x=8

I’m stuck on this! I need help

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Answer:

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

Step-by-step explanation:

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:

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

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)

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Multiply them by 5

15/20

She had 5 cookies left

Help pls and thank you:)

Answers

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

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

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Answers

Answer:

x = 15

Step-by-step explanation:

Answer:

Step-by-step explanation:

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

Billy has 8 red marbles, 6 blue marbles, and 4 green marbles in a jar.
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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

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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

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

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

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Answers

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

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