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fiasKO [112]
3 years ago
8

Which expression are equivalent to 4+4x+2y+x-y)?

Mathematics
2 answers:
In-s [12.5K]3 years ago
8 0

Answer:

The answer to that is 5x+y+4 but the equivalent is

4(3x + y) and 12x + 4y

Step-by-step explanation:

iren2701 [21]3 years ago
4 0

Answer: 4(3x + y) and 12x + 4y

Step-by-step explanation:

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Lucy is saving money to buy a game. The game costs $21, and so far she has saved one-third of this cost. How much money has Lucy
Svetach [21]

Answer:

$7

Step-by-step explanation:

just did 21 divided by three since it says she has saved one third of the $21.

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3 years ago
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Which of these numbers is prime?<br><br><br><br> 25, 31, 44, 49, 95
sladkih [1.3K]

Answer:

31.

Step-by-step explanation:

5 0
3 years ago
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SOMEONE, PLEASE HELP ME WITH THIS PLSSSS
Stels [109]

Answer:

Step-by-step explanation:

1. You can use the intercepts to graph the line. The graph of 2x + 3y = 12      crosses the x-axis at (6, 0), so its x-intercept is 6. The graph of 2x + 3y = 12  crosses the y-axis at (0, 4), so its y-intercept is 4.

2. Point-Slope Form: y - y1 = m(x - x1)

Standard Form: ax + by = c

5x - 2y = 10

-2y = -5x + 10

y = (5/2)x - 5    The slope is 5/2.

y - 2 = (-5/2)(x - 10)

y = (-5/2)x + 25 + 2

y = (-5/2)x + 27      The slope is -5/2.

y = (-5/2)x - 10     The slope is -5/2.

5 0
3 years ago
If |a| = |b| then does a = b?
kondor19780726 [428]

Answer:

yes, if |a|=|b| then a = b......

3 0
3 years ago
4. Which of the following lines is perpendicular to y = -2X + 8?
Alenkinab [10]

For this case we have to by definition, if two lines are perpendicular then the product of its slopes is -1.

That is to say:

m_ {1} * m_ {2} = - 1

We have the following equation:

y = -2x + 8

So:

m_ {1} = - 2

Thus:

m_ {2} = \frac {-1} {m_ {1}}\\m_ {2} = \frac {-1} {- 2}\\m = \frac {1}{2}

Thus, a line perpendicular to the given line must have slope m = \frac {1} {2}.

Option A:

x + 2y = 8\\2y = -x + 8\\y = - \frac {1} {2} x + 4

It is not perpendicular!

Option B:

x-2y = 6\\2y = x-6\\y = \frac {1} {2} x-3

If it is perpendicular!

Option C:

2x + y = 4\\y = -2x + 4

It is not perpendicular!

Option D:

2x-y = 1\\y = 2x-1

It is not perpendicular!

The correct option is option B

ANswer:

Option B

5 0
3 years ago
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