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Alex17521 [72]
3 years ago
13

The slope of a line perpendicular to the line whose equation is y = 3x - 4 is

Mathematics
1 answer:
trapecia [35]3 years ago
6 0

Answer:

m = -1/3

Step-by-step explanation:

y = 3x-4

This is in slope intercept form

y = mx+b  m is the slope and b is the y intercept

The slope is 3 and the y intercept is -4

We want the slope of a line that is perpendicular

Perpendicular lines have slopes that multiply to -1

Let m be the slope of the line that is perpendicular

3 * m = -1

Divide each side by 3

3m/3 = -1/3

m = -1/3

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Graph a line parallel to y-2x+1 and has a y-intercept of (0,5))
Debora [2.8K]

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7 0
3 years ago
The sum of the digits of a two-digit number is 12. The number formed by reversing the digits is 54 more than the original number
andreyandreev [35.5K]

Answer:

39

Step-by-step explanation:

let the 2 digit number be ab = 10a + b ( considering place value )

The reversed  2 digit number is ba = 10b + a

The sum of the 2 digit number is

a + b = 12 ( subtract b from both sides )

a = 12 - b → (1)

Expressing as an equation

ba = ab + 54 , that is

10b + a = 10a + b + 54

Substitute a = 12 - b into the equation

10b + 12 - b = 10(12 - b) + b + 54 , simplify both sides

9b + 12 = 120 - 10b + b + 54

9b + 12 = - 9b + 174 ( add 9b to both sides )

18b + 12 = 174 ( subtract 12 from both sides )

18b = 162 ( divide both sides by 18 )

b = 9

Substitute b = 9 into (1)

a = 12 - 9 = 3

Thus

the original 2 digit number = ab = 39

The reversed 2 digit number = ba = 93

which is 54 more than the original number

7 0
3 years ago
Does anyone have a idea ?
FromTheMoon [43]
Might be c not sure!!
4 0
3 years ago
What is the difference of the two expressions shown below (3/4X+2)-(1/4x+5). Explain why
Nostrana [21]

Answer:

  • D. 1/2x - 3

Step-by-step explanation:

  • (3/4x + 2) - (1/4x + 5) =
  • 3/4x - 1/4x + 2 - 5 =
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Correct choice is D

5 0
2 years ago
68 so close HELPPPPPPPPPPPP
gavmur [86]

Answer:

5.4, -5, -9/10

Step-by-step explanation:

4 0
3 years ago
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