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LenKa [72]
3 years ago
15

3x - 5 = 7x + 11 x =

Mathematics
2 answers:
Alexus [3.1K]3 years ago
7 0

Answer:

x= -4

Step-by-step explanation:

3x-5=7x+11

3x-5+5=7x+11+5

3x=7x+11+5

3x=7x+16

3x-7x=7x+16-7x

-4=7x+16-7x

-4x=16

divided each side by -4

x= 16 over -4

divide them and you get -4.

DanielleElmas [232]3 years ago
5 0

Answer:

3x - 5 = 7x + 11 \\ 7x - 3x =  - 11 - 5 \\ 4x =  - 16 \\x =  -  \frac{16}{4}   \\    \color{yellow} \boxed{x =-4}

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92 divided by 11 with remainder
Jet001 [13]

Answer:

8 remainder 4

8 0
3 years ago
Write an equation with a variable AND solve it. Mario read 72 pages of his book in class and 13 pages per night, n, until he rea
coldgirl [10]

9514 1404 393

Answer:

  72 +13n = 163

  7 nights

Step-by-step explanation:

At 13 pages per night, Mario will read 13n pages in n nights. That plus the pages already read will total 163:

  equation: 13n +72 = 163

__

To solve this, we can subtract 72, then divide by the coefficient of n.

  13n = 91 . . . . . . subtract 72 from both sides

  n = 7 . . . . . . . . divide both sides by n

Mario read 7 nights.

6 0
3 years ago
Example 2
Arada [10]

Answer:

y=x-2

Step-by-step explanation:

If you have drawn the graph of y = x^2 - 3x + 1.

To determine the equation of the line which  should be drawn to solve the equation:  x² - 4x +3=0

Simply carry out the subtraction: x^2 - 3x + 1 -(x^2 - 4x +3)

\implies x^2 -3x + 1-x^2 + 4x -3 \\= x^2 - x^2+ 4x - 3x-3  + 1\\=x-2

The equation of the line which should be drawn is: y=x-2

What this means is simply:

If

y = x^2 - 3x + 1$ and $y=x-2,$ then:\\x^2 - 3x + 1=x-2\\x^2 - 3x + 1-x+2=0\\x^2 - 4x + 3=0

5 0
3 years ago
8, -, 26, -, 44, -, -, 71
Georgia [21]
8,17,26,35,44,53,62,71
3 0
4 years ago
Janet has 7 markers in a backpack. One of them is orange and one is blue. Find the probability Janet will reach into the backpac
sammy [17]

Answer:

a) Not replaced

Yelllow marker First - Then Blue Marker  =

 

(1/10)(1/9)  =  1/90

 

b) Replaced

 

(1/10) (1/10)  = 1/100

 

Answer   "C"

Step-by-step explanation:

3 0
4 years ago
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