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3 years ago

13

What is "the sum of twice a number and six is the same as three subtracted from the number itself"?

1 answer:

inysia [295]3 years ago

4 0

Answer:

x=-1

Step-by-step explanation:

2x+6=3-x

Step 1: Simplify both sides of the equation.

2x+6=3−x

2x+6=3+(−x)

2x+6=−x+3

Step 2: Add x to both sides.

2x+6+x=−x+3+x

3x+6=3

Step 3: Subtract 6 from both sides.

3x+6−6=3−6

3x=−3

Step 4: Divide both sides by 3.

3x/3=−3/3

x=−1

Answer:

x=−1

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3 years ago

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7 0

3 years ago

Which equation represents the line that passes through the points (-3, 7) and (9,-1)? oy--3x+5 o y=-x-7 o y=zx-7 oy - 12 2x+5

olchik [2.2K]

Answer:

The answer is

<h2> $y = - \frac{2}{3} x + 5$ </h2>

Step-by-step explanation:

Equation of a line is y = mx + c

where

m is the slope

c is the y intercept

To find the equation we must first find the slope of the line.

So the slope of the line using points (-3, 7) and (9,-1) is

<h3> $m = \frac{ - 1 - 7}{9 + 3} = - \frac{8}{12} = - \frac{2}{3}$ </h3>

Now we use the formula

<h3>y - y1 = m(x - x1)</h3>

where

m is the slope

( x1 , y1) is any of the points given

So the equation of the line using point

( - 3 , 7) and slope - 2/3 is

<h3> $y - 7 = - \frac{2}{3} (x + 3) \\ y - 7 = - \frac{2}{3} x - 2 \\ y = - \frac{2}{3} x - 2 + 7$ </h3>

We have the final answer as

<h3> $y = - \frac{2}{3} x + 5$ </h3>

Hope this helps you

5 0

2 years ago

Read 2 more answers

What is 6050.287 rounded to the nearest ten

ra1l [238]

It should be 6100 which rounded to the nearest ten gives 61 × 10²

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3 years ago

I NEED HELP ASAP!!!! SOLVE THIS IT'S AN IMAGE!!!!

joja [24]

Answer:

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Step-by-step explanation:

Put x = 2 in any one of the equation

5x +2y = -4

5*2 + 2y = -4

10 +2y = -4

2y = -4 -10

2y = -14

y = -14/2

y = -7

6 0

3 years ago

Read 2 more answers