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Dahasolnce [82]
3 years ago
11

What value of x makes the equation 3(x−6)−8x=−2+5(2x+1) true?

Mathematics
1 answer:
zysi [14]3 years ago
5 0

Answer:

3(x - 6) - 8x =  - 2 + 5(2x + 1) \\ 3x - 18 - 8x + 2 - 10x - 5 = 0 \\  =  >  - 15x - 21 = 0 =  >  - 15x = 21 =  > x =  - \frac{7}{5}

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Can yall help me out
Ainat [17]

Answer:

Option D, Yes, Devon should have evaluated f(3)

Step-by-step explanation:

f(x) = x^3 + x^2 − 10x + 8

<u>Step 1:  Evaluate using F(3) NOT f(-3)</u>

f(3) = 3^3 + 3^2 - 10(3) + 8

f(3) = 27 + 9 - 30 + 8

f(3) = 14

Since the factor is (x - 3) the x value is x - 3 + 3 = 0 + 3 -> x = 3 not x = -3

Answer:  Option D, Yes, Devon should have evaluated f(3)

6 0
4 years ago
What is 2(8x-3) -4(3x-5)=19
vladimir1956 [14]

Answer:

5/4

Step-by-step explanation:

2(8x-3)-4(3x-5)=19

16x-6-12x+20=19

16x-12x-6+20=19

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4x=19-14

4x=5

x=5/4

7 0
3 years ago
How do you do this problem 2n^3-n^2-136n=0
Rzqust [24]
<span>2n^3-n^2-136   :Equation: 

                                      Substitute 0 for n  

</span>                                      Simplify {20}^{3}<span> to </span><span>8000 
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<span>8000−<span>0<span><span>​^2</span><span>​​</span></span></span>−136 

</span>                                     Simplify <span>{0}^{2}<span>​​</span></span><span> to </span><span>0 
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= 7864</span></span><span>
</span>
5 0
3 years ago
What units are usesd for volume
dimaraw [331]

Answer: Cubic inches, feet, cm, etc.

8 0
3 years ago
Read 2 more answers
!!!!!!!!! Helppppppp plsssss
Travka [436]

Answer:

(6 / 4) * (7 + 9)

Step-by-step explanation:

sry that took me so long lol

4 0
2 years ago
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