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maxonik [38]
3 years ago
10

Giving brainliest 3x^{2} -5x-2=0

Mathematics
2 answers:
Bumek [7]3 years ago
5 0

Answer:

4x=2

Step-by-step explanation:

3x^2-5x-2=0

 9x-5x-2=0

  4x  +2   +2

       4x=2

MaRussiya [10]3 years ago
4 0

Answer:

Step-by-step explanation:

I can guess what the instructions are, but it'd be helpful if you were to share them.

3x^2 - 5x - 1 = 0 is a quadratic with coefficients {3, -5, -1}.  Find the discriminant b^2 - 4ac:  25 - 4(3)(-1) = 13.

Because the discriminant is positive, we know we have two unequal real roots here.  Continuing with the quadratic formula, we obtain:

      -(-5) ±√13          5 ± √13

x = ----------------- = ----------------

            2(3)                   6

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What is 5x-7(x+1)=9<br> Thanks for the help
mylen [45]

Answer:

x = -8

Step-by-step explanation:

Step 1: Write equation

5x - 7(x + 1) = 9

Step 2: Solve for <em>x</em>

  1. Distribute -7: 5x - 7x - 7 = 9
  2. Combine like terms: -2x - 7 = 9
  3. Add 7 to both sides: -2x = 16
  4. Divide both sides by -2: x = -8

Step 3: Check

<em>Plug in x to verify it's a solution.</em>

5(-8) - 7(-8 + 1) = 9

-40 - 7(-7) = 9

-40 + 49 = 9

9 = 9

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3 years ago
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Eva8 [605]

3125m ^{2}

Step-by-step explanation:

the question is asking for the volume of water in m^3 that will be in the pool when it is completely full.

we find this by multiplying the length times the width times the depth.

this gives us 50m×25m×2.5m= 3125m^3

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4 years ago
PLS HELP ME ASAP FOR 13!! (MUST SHOW WORK!!) + LOTS OF POINTS!! *brainliest*
Gala2k [10]
The answer would be -1/2
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Answer:

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Simplify: 26 • -5 <br><br> Giving brainliest^^<br><br> A) 130<br> B) 21<br> C) -105<br> D) -130
Kisachek [45]
The answer should be D) -130
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