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Lemur [1.5K]
3 years ago
11

-2(4x+4)-3x-2=34 what's the answer

Mathematics
1 answer:
Julli [10]3 years ago
4 0

Answer:

x = -4

Step-by-step explanation:

Given: -2(4x + 4) - 3x - 2 = 34

To solve this equation, we have to isolate the variable. (Get x by itself).

We'll follow the PEMDAS rule as far as parentheses.

So, -2(4x + 4) - 3x - 2 = 34

= -8x - 8 - 3x - 2 = 34

Now, we have to get x by itself. To do this, we'll move the numbers without variables to the other side.

Hence:

-8x - 8 - 3x - 2 = 34

     +8        +2       +8  +2

-8x - 3x = 34 + 8 + 2

Now, we'll simplify.

-11x = 44

Lastly, to rid the negative eleven from the x, we have to divide negative eleven by the rest of the equation.

-11x = 44

-------------

-11

x = -4

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mr_godi [17]

Answer:

  1. x = 0 or 1
  2. x = ±i/4
  3. x = -5 (twice)

Step-by-step explanation:

Factoring is aided by having the equations in standard form. The first step in each case is to put the equations in that form. The zero product property tells you that a product is zero when a factor is zero. The solutions are the values of x that make the factors zero.

1. x^2 -x = 0

  x(x -1) = 0 . . . . . x = 0 or 1

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2. 16x^2 +1 = 0

This is the "difference of squares" ...

  (4x)^2 - (i)^2 = 0

  (4x -i)(4x +i) = 0 . . . . . x = -i/4 or i/4 (zeros are complex)

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3. x^2 +10x +25 = 0

  (x +5)(x +5) = 0 . . . . . x = -5 with multiplicity 2

5 0
3 years ago
PLEASE HELP! WILL MARK BRAINLIEST
omeli [17]

1)

v - 6 ≥ 4

<u>   +6  </u> <u>+6 </u>

v      ≥ 10

Graph: 10 -----------------→  <em>the dot at 10 is filled in because of the "equal to" symbol</em>

********************************************************************************************************

2)

-5x < 15

\frac{-5x}{-5} > \frac{15}{-5}  <em>divided by a negative so the symbol flipped </em>

x > -3

Graph: -3 o------------------→ <em>the dot at -3 is NOT filled in because it's NOT "equal to" </em>

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3)

3k > 5k + 12

<u>-5k </u>  <u>-5k       </u>

-2k >          12

\frac{-2k}{-2} < \frac{12}{-2}   <em>divided by a negative so the symbol flipped </em>

k < -6

Graph: ←------------o -6   <em>the dot at -6 is NOT filled in because it's NOT "equal to" </em>

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5)

2t ≤ 4      or    7t ≥ 49

\frac{2t}{2} \leq\frac{4}{2}      or    \frac{7t}{7} \geq \frac{49}{7}

 t ≤ 2      or      t ≥ 7

Graph: ←------- 2        7 ---------→   <em>the dots at 2 and 7 are filled in</em>

********************************************************************************************************

6)

| n + 2 | = 4

n + 2 = 4      or     n + 2 = -4

<u>     -2</u>   <u>-2 </u>             <u>     -2 </u>   <u>-2 </u>

n      = 2        or     n       = -6

Answer: n = {2, -6}

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7)

| 2x - 7 | > 1

2x - 7 > 1       or     2x - 7 < -1

<u>      +7</u>  <u>+7 </u>             <u>     +7 </u>   <u>+7 </u>

2x      > 8       or     2x     <  6

    \frac{2x}{2} > \frac{8}{2}             or       \frac{2x}{2} < \frac{6}{2}

    x > 4          or         x < 3

Graph: ←----------o 3      4 o------------→

********************************************************************************************************

8)

A = {1, 2, 3, 4, 5, 6, 7, 8, 9}    B = {2, 4, 6, 8}

A U B = {1, 2, 3, 4, 5, 6, 7, 8, 9}    <em>union combines both sets</em>

A ∩ B =  {2, 4, 6, 8}   <em>intersection includes only those that are in BOTH sets</em>

********************************************************************************************************

9)

P = {1, 5, 7, 9, 13}   R = { 1, 2, 3, 4, 5, 6, 7}    Q = {1, 3, 5}

P ∩ R ∩ Q = {1, 5}

P ∩ R = {7}  <em>disregard 1 & 5 since they are already in </em>P∩Q∩R

R ∩ Q = {3}  <em>disregard 1 & 5 since they are already in </em>P∩Q∩R

P ∩ Q = { }  <em>disregard 1 & 5 since they are already in </em>P∩Q∩R

P no intersection = {9, 13)

R no intersection = {2, 4, 6}

Q no intersection = {  }

If you can't figure out how to draw it based on the information I provided, please see the attached diagram. <em>Note: Usially, you would only identify P, Q, R.  I identified the intersections so you would understand why those specific numbers are placed in the designated sections.</em>





4 0
3 years ago
30 POINTS TO ANSWER!!!!!
Ede4ka [16]

Answer:

35

y = -4(-8) +3

y= 35

yea

that is the out put so 35

3 0
3 years ago
Solve using any method 4x-y=20 and -2x-2y=10
dsp73

Answer:

if you're trying to find the slope, it is (3, -8) were you looking for the slope?

Step-by-step explanation:

i hope this helps, have a great day:)

7 0
3 years ago
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irina [24]

Answer:

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Step-by-step explanation:

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