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WINSTONCH [101]
3 years ago
6

Solve the following equations for x -11=3-7(x-1)

Mathematics
2 answers:
Neporo4naja [7]3 years ago
8 0

Answer:

x = 21/8

Step-by-step explanation:

x - 11 = 3 - 7x + 7

8x = 21

x = 21/8

lesya692 [45]3 years ago
3 0

Answer:

x = 21/8

Step-by-step explanation:

Step 1: Write equation

x - 11 = 3 - 7(x - 1)

Step 2: Solve for <em>x</em>

<u>Distribute -7:</u> x - 11 = 3 - 7x + 7

<u>Combine like terms:</u> x - 11 = 10 - 7x

<u>Add 7x on both sides:</u> 8x - 11 = 10

<u>Add 11 on both sides:</u> 8x = 21

<u>Divide both sides by 8:</u> x = 21/8

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Find the equation of the line that goes through (-8,11) and is perpendicular to x= - 15. Write the equation in the form x = a, y
galben [10]

Answer:

y=11

Step-by-step explanation:

Hi there!

We want to find the equation of the line that passes through the point (-8, 11) and is perpendicular to x=-15

If a line is perpendicular to another line, it means that the slopes of those lines are negative and reciprocal; in other words, the product of the slopes is equal to -1

The line x=-15 has an undefined slope, which we can represent as 1/0, which is also undefined.

To find the slope of the line perpendicular to x=-15, we can use this equation (m is the slope):

m_1*m_2=-1

m_1 in this instance would be 1/0, so we can substitute it into the equation:

\frac{1}{0} *m_2=-1

Multiply both sides by 0

m_2=0

So the slope of the new line is 0

We can substitute it into the equation y=mx+b, where m is the slope and b is the y intercept:

y=0x+b

Now we need to find b:

Since the equation passes through the point (-8,11), we can use its values to solve for b.

Substitute -8 as x and 11 as y:

11=0(-8)+b

Multiply

11=0+b, or 11=b

So substitute into the equation:

y=0x+11

We can also write the equation as y=11

Hope this helps!

5 0
3 years ago
-5/6 - 17/18 - (-2/9)
Sunny_sXe [5.5K]

First, let's fine the decimal of each fraction.


-5 Divided By 6 = -0.83333333333

17 Divided By 18 = 0.94444444444

-2 Divided By 9 = -0.22222222222



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8 0
3 years ago
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Step-by-step explanation:

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