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boyakko [2]
3 years ago
12

Solve the equation 6x + 12 = 4x - 18

Mathematics
2 answers:
Nataly [62]3 years ago
5 0

Answer:

x = 15

Step-by-step explanation:

collect like terms

6x+4x= -18-12

2x= -30

divide through by 2

2x/2= -30/2

x = -15

therefore

x = -15

kenny6666 [7]3 years ago
4 0

Answer:

X = -15

Step-by-step explanation:

6X +12 = 4X -18

Subtract 4X from both sides

2X +12 = -18

Subtract 12 from both sides

2X = -30

Divide both sides by 2

X = -15

So basically just have the unknown on one side and normal numbers on the other. Make sure you do the same thing on both sides.

Mark me as brainliest if this helps!

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Find the equation of a line that passes through the points (-2,-3) and (4,1)
TiliK225 [7]

The equation of the line from give points is y = 2/3x - 5/3.

According to the statement

We have given that the two points which are (-2,-3) and (4,1)

And we have to find the equation of a line that passes through the given points.

So,For this purpose,

First, we need to determine the slope of the line. The slope can be found by using the formula:

m = \frac{(y_2) -(y_1)}{(x_2) -(x_1)}

Where

m is the slope and

Substituting the values from the points in the problem gives:

m = 1 + 3 /4 + 2

m = 4/6

m = 2/3.

And then

Now, we can use the point-slope formula to find an equation for the line. The point-slope formula states:

y - (y_1) = m(x -x_1)

Put the values in it then

y - (-3) = 2/3 (x-(-2))

y +3 = 2/3 (x +2)

3y + 9 = 2x + 4

3y - 2x = 4 -9

3y -2x = -5

3y = 2x - 5

y = 2/3x - 5/3.

So, The equation of the line from give points is y = 2/3x - 5/3.

Learn more about equation of the line here

brainly.com/question/13763238

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4 0
1 year ago
The hardcover version of a book weighs 7 ounces while its paperback version weighs 5 ounces. Forty-five copies of the book weigh
konstantin123 [22]

Answer:

33 copies were paperback and 12 were hardcover.

Step-by-step explanation:

Let h represent the number of hardcover copies and p represent the number of paperback copies.

We know that the total number of copies was 45; this gives us the equation

h+p = 45

We know that each hardcover copy is 7 ounces; this gives us the expression 7h.

We also know that each paperback copy is 5 ounces; this gives us the expression 5p.

We know that the total weight was 249 ounces; this gives us the equation

7h+5p = 249

Together we have the system

\left \{ {{h+p=45} \atop {7h+5p=249}} \right.

We will use elimination to solve this.  First we will make the coefficients of the variable p the same; to do this, we will multiply the top equation by 5:

\left \{ {{5(h+p=45)} \atop {7h+5p=249}} \right. \\\\\left \{ {{5h+5p=225} \atop {7h+5p=249}} \right.

To eliminate p, we will subtract the equations:

\left \{ {{5h+5p=225} \atop {-(7h+5p=249)}} \right. \\\\-2h=-24

Divide both sides by -2:

-2h/-2 = -24/-2

h = 12

There were 12 hardcover copies sold.

Substitute this into our first equation:

12+p=45

Subtract 12 from each side:

12+p-12 = 45-12

p = 33

There were 33 paperback copies sold.

3 0
3 years ago
Read 2 more answers
Solve in PEMDAS:<br> 3 + [2 + 3 X (6 X 3)]
sladkih [1.3K]
The answer should be 59
3 0
2 years ago
4/5 is equivalent to 12 over what
san4es73 [151]

Step-by-step explanation:

4/5 is equivalent to 12/15

8 0
3 years ago
Read 2 more answers
Find the circumference and area of each circle 15mn
AysviL [449]
Area= 709.86
Circumference= 94.25

6 0
3 years ago
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