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mojhsa [17]
3 years ago
13

12x - 84 = 4x + 12. What does X equal?

Mathematics
2 answers:
Vesnalui [34]3 years ago
8 0

Answer:

12

Step-by-step explanation:

To solve the problem, you have to leave the x alone,

To do so, you have to add 84 on each side

12x = 4x + 96

Then, subtract 4x on each side,

8x = 96

Then divide each side by 8, so

x = 12

Hope it helps!!

Let me know if I'm wrong or you need help on anything else!!

Also, if you're okay with it, can you plz make be brainliest?

fredd [130]3 years ago
6 0

Answer:

x = 12

Step-by-step explanation:

12x - 84 = 4x + 12

We want to move x to one side and all other values to the other side of the equal sign

Add 84 to both sides of the equation

12x - 84 + 84 = 4x + 12 + 84

Simplify

12x = 4x + 96

Subtract 4x from both sides

12x - 4x = 4x - 4x + 96

Simplify

8x = 96

Divide both sides by 8

8x /8 = 96/8

Simplify

x = 12

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Scientists have discovered a vaccine for a debilitating disease. This year there were 570,000 reported new cases of the disease
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Answer: There are approximately 853827 new cases in 6 years.

Step-by-step explanation:

Since we have given that

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Rate at which population decreases is given by

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Now,

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Third year is given by

570000(\frac{1}{3})^2

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it becomes geometric progression, as there is exponential decline.

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570000,570000\times \frac{1}{3},570000\times( \frac{1}{3})^2,......,570000\times (\frac{1}{3})^6

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Sum of terms will be given by

S_n=\frac{a(1-r^n)}{(1-r)}

We'll put this value in this formula,

S_6=\frac{570000(1-(\frac{1}{3})^6}{(1-\frac{1}{3})}\\\\=853827.16

So, there are approximately 853827 new cases in 6 years.

6 0
3 years ago
The sum of nine consecutive integers; n=middle integer of the nine
VMariaS [17]
(n-4)+(n-3)+(n-2)+(n-1)+n+(n+1)+(n+2)+(n+3)+(n+4)=9n
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Look at Attachment, giving a lot of points for the answer to questions.
tatiyna

Answer:

see below

Step-by-step explanation:

1.

m = (y2-y1)/(x2-x1)

    = (90-80)/(0-1)

     = 10/-1

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The slope is -10 ft/s

This means the height decreases 10 ft for every second that passes

This is not proportional because it has to go through the point (0,0)

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The slope is $1000/3

This means the 1000 dollars is sold every 3 days

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3 years ago
Read 2 more answers
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mr Goodwill [35]
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4 0
3 years ago
Solve equation for 5x-14=8x+4
creativ13 [48]
My answer-

Simplifying 5x + -14 = 8x + 4
 
Reorder the terms: -14 + 5x = 8x + 4 Reorder the terms: -14 + 5x = 4 + 8x
 
Solving -14 + 5x = 4 + 8x Solving for variable 'x'.


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Combine like terms: 5x + -8x = -3x -14 + -3x = 4 + 8x + -8x

Combine like terms: 8x + -8x = 0 -14 + -3x = 4 + 0 -14 + -3x = 4 Add '14' to

 each side of the equation. -14 + 14 + -3x = 4 + 14

Combine like terms: -14 + 14 = 0 0 + -3x = 4 + 14 -3x = 4 + 14

 Combine like terms: 4 + 14 = 18 -3x = 18 <span>

Divide each side by '-3'. x = -6

Simplifying x = -6


If you need anything else on brainly let me know :)</span>

6 0
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