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Fittoniya [83]
3 years ago
14

PLEASE HELP I DO NOT UNDERSTAND!

Mathematics
2 answers:
andrew-mc [135]3 years ago
8 0

Answer:

1.) x = -3 2.) x = 4/3 3.) x = 698/77 or 9.1

Step-by-step explanation:

1.) 4 + 2x = -2

2x = -2 - 4

2x = -6

x = -3

2.) -1 (3x - 12) = 9x - 4

-(3x - 12) = 9x - 4

-3x + 12 = 9x - 4

-3x - 9x = -4 - 12

-12x = -16

x = 4/3

3.) x - 4 = 13 (6x - 54)

x - 4 = 78x - 702

x - 78x = -702 + 4

-77x = -698

x = 698/77 or 9.1

alexgriva [62]3 years ago
3 0

Answer:

1. x = -3

2. x = 4/3

3. x = 698/77

Step-by-step explanation:

4+2x=-2

-4       -4

2x= -6

/2     /2

x=-3

You have to get x alone on one side. Search up on yt "How to solve for x on two sides."

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Please help I will give brainliest IF IT IS CORRECT
Andreyy89

Answer:

third graph and (3, -1)

Step-by-step explanation:

y = 2/3x - 3

y = -2x + 5

2/3x - 3 = -2x + 5

2 2/3x = 8

8/3x = 8

8x = 24

x = 3

find 'y'

y = -2(3) + 5

y = -1

The third graph is correct because it shows both a line intersecting the y-axis at -3 and the negative slope line is crossing at +5

5 0
3 years ago
Solve the inequality by stating the solution and graphing it.<br> 3 – 5x &lt; -4x + 9
svet-max [94.6K]

Answer:

x>-6

graphing (-6,0)

Step-by-step explanation:

3-5x<-4x+9-- Add 5x to -4x

3<x+9--- subtract 9 from both sides

-6<x

7 0
3 years ago
Find the number that makes the ratio equivalent to 6:7 <br> 60:
Andru [333]

Answer:

60:70

Step-by-step explanation:

\frac{60}{x}  =  \frac{6}{7}  \\  \\ 60 \times  \frac{7}{6}  = x \\  \\ 70 = x

6 0
3 years ago
If y varies directly as x, and y is 48 when x is 6, which expression can be used to find the value of y when x is 2?
sertanlavr [38]

y = ( 48 *2 ) / 6

Step-by-step explanation:

If y varies directly as x they are directly proportional, which means they relate to each other in the same way....

2 : y = 6: 48

what is y if x = 2?

The value of y can be found if you write it a two fracrions

2 : y = 6 : 48

2 / y = 6 / 48

cross multiply the fractions gives

6*y = 48 *2

divide left and right of the = sign by 6 gives the answer:

y = ( 48 *2 ) / 6

(if you solve it you get y = 12 but that was not the question).

Other method:

multiply left and right of the = sign by y

2 * y/y = y *6 / 48

6y / 48 = 2 * 1

multiply left and right of the = sign by 48

6y * 48/48 = ( 48 *2 )

6y = ( 48 *2 )

divide left and right of the = sign by 6

6/6* y = ( 48 *2 )/6

y = ( 48 *2 ) / 6

(if you solve it you get y = 12 but that was not the question).

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3 years ago
Solve for t <br> a+ct=b+t
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It is 5 bc I’m just answering so I can post my questions
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