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dimaraw [331]
3 years ago
6

- 2x - 147 = 123 + 7x

Mathematics
2 answers:
k0ka [10]3 years ago
7 0
-2x - 147 = 123 + 7x
Add 147 on both sides
-2x = 270 + 7x
Subtract 7x on both sides
-9x = 270
Divide -9x on both sides
X = -30
worty [1.4K]3 years ago
6 0

Answer:

<h2>x = -30</h2>

Step-by-step explanation:

-2x-147=123+7x\qquad\text{add 147 to both sides}\\\\-2x-147+147=123+147+7x\\\\-2x=270+7x\qquad\text{subtract }\ 7x\ \text{from both sides}\\\\-2x-7x=270+7x-7x\\\\-9x=270\qquad\text{divide both sides by (-9)}\\\\\dfrac{-9x}{-9}=\dfrac{270}{-9}\\\\x=-30

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Aloiza [94]
The formula for slope is y = mx + b
y is the y value, m is the slope, x is the x value, and b is the y intercept.

The equation given for line e is
y = \frac{ - 9}{2} x + 7
Therefore the slope of line e is -9/2
Line f is parallel and parallel lines have the same slope.

So the slope is line f is -9/2.

The picture isn't that clear and I can't really tell if it's-9/2 or 9/2.
But whatever it is, the slope of line f is the same as the slope of line e because they are parallel.
Good luck!
8 0
4 years ago
What’s the 30th of the linear sequence<br><br> -5,-2,1,4,7
Vika [28.1K]

The 30th term of the given sequence is 82.

<u>Step-by-step explanation</u>:

  • The general form of an Arithmetic Progression is a, a + d, a + 2d, a + 3d and so on.
  • The given linear sequence (-5,-2,1,4,7) is in the form of Arithmetic Progression with a common difference of 3.
  • -5, -5+3 = -2, -2+3 = 1, 1+3 = 4 and so on.

The nth term is given by the formula nth term = a + (n - 1) d

where  

a = first term

d = common difference

<u>To find the 30th term in the given sequence :</u>

The first term, a = -5 and the common difference, d = 3.

30th term = -5 + (30-1) 3

⇒ -5 + (29) 3

⇒ -5 + 87

⇒ 82

Therefore, the 30th term in the given sequence is 82.

7 0
3 years ago
What is the domain of f(x) =9-x^2
qaws [65]
Okay that's what I got hope it's right

3 0
3 years ago
M=3 and d=2 then 2m+d equals ​
koban [17]
7

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8 0
3 years ago
Read 2 more answers
Values of X are solutions to the equation |x| + 31=51
RideAnS [48]

Answer:

20, -20

Step-by-step explanation:

I assume you mean |x| + 31 = 51?

that means |x| + 31 - 31 = 51 - 31

==> |x| = 20

because this is absolute value

so x = 20 or -20

7 0
3 years ago
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