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geniusboy [140]
3 years ago
5

Solve for r. -13 = r/9 + 8 r = ???

Mathematics
2 answers:
larisa86 [58]3 years ago
7 0

Answer:

r= -189

Step-by-step explanation:

Naya [18.7K]3 years ago
6 0

Answer:

r= -189

Step-by-step explanation:

You subract the 8 both sides:   -13= r/9+8

Which equals to: -21= r/9

In order to get the 9 off, you have to cancel it by multiplying ( opposite of   is multiplying) both sides:

9(-21)= r

And the final answer is:  r= -189

You can check it by plugging in -189 to r and it works:)

Your welcome:)))

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Solve the equation and give the solution 6x – 3y = 3 –2x + 6y = 14
fomenos

Answer:

x=3.9 or 39/10 and   y=3.13333 or 47/15

Step-by-step explanation:

Since both expressions (6x-3y) and (3-2x+6y) are equal to 14, separate the equations:

       6x-3y=14 and 3-2x+6y=14

Simplify the equations

       6x-3y=14 and -2x+6y=11

Now, line the equations up and pick a variable (either x or y) to eliminate

        6x-3y=14

        -2x+6y=11

In this case, let's eliminate y first. To do so make the y values in both equations the same but with opposite signs. Make both be 6y but one is +6y and the other -6y

Multiply (6x-3y=14) by 2 to get:

      12x-6y=28

Line the equations up and add or subtract the terms accordingly

      12x-6y=28

      -2x+6y=11

This becomes:

     10x+0y=39

Isolate for x

   x= 39/10 or x= 3.9

Now substitute the x value into either of the original equations

    6x-3y=14

    6(3.9)- 3y=14

Isolate for y

   23.4-14=3y

   3y= 9.4

  y= 3.1333 (repeating)  or y= 47/15

       

8 0
3 years ago
Read 2 more answers
Write the equation of a line parallel to the line whose equation is 3y+5x=6 and whose y-intercept is4
victus00 [196]

Answer:

Step-by-step explanation:

Step 1:  rewrite the equation of the given line in to slope-intercept form by solving for y

  3y + 5x = 6    

     3y = -5x + 6               (subtract 5x from both sides)

        y = -(5/3)x + 2           (divide both sides by 3)

Step 2:  Our line is parallel to this line, so it has the same slope, and a

y-intercept of 4, so we have...

  y = -(5/3)x + 4      

*slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept,

 

5 0
4 years ago
6 3/8+5 1/3 what is the answer and how do you figure it out
inn [45]

Answer:

11 17/24

Step-by-step explanation:

To find this out we have to first find out the least common denominator for 8 and 3 which would be 24, now we have to switch both denominators to 24 but also have to switch the numerators to how much we multiplied the denomintors by and then add. so we multiplied 8 by 3 to get it to 24 so we multiply the numerator 3 by 3 as well. and for the second fraction we multiply the denominator 3 by 8 to get 24 so we multiply the nuerator by 8 as well. so...

6 3/8+ 5 1/3= 6 9/24 + 5 8/24 = 11 17/24

8 0
3 years ago
Examine this system of linear equations. y – x = 2, x + y = 4 Which is a solution of the system of equations? (1, 3) (2, 2) (3,
Blizzard [7]

Answer:

(1, 3)

Step-by-step explanation:

Solve the following system:

{y - x = 2 | (equation 1)

{x + y = 4 | (equation 2)

Add equation 1 to equation 2:

{-x + y = 2 | (equation 1)

{0 x+2 y = 6 | (equation 2)

Divide equation 2 by 2:

{-x + y = 2 | (equation 1)

{0 x+y = 3 | (equation 2)

Subtract equation 2 from equation 1:

{-x+0 y = -1 | (equation 1)

{0 x+y = 3 | (equation 2)

Multiply equation 1 by -1:

{x+0 y = 1 | (equation 1)

{0 x+y = 3 | (equation 2)

Collect results:

Answer: x = 1, y = 3

4 0
3 years ago
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Which of the following are the coordinates of a rectangle with a length of 4 units and a width of 3 units in the coordinate plan
jekas [21]
A!!
-2 and 2 are the x values of the coordinates which are 4 units apart, being 4 units in LENGTH
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