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enot [183]
3 years ago
9

3x^+5x+2=0 need work shown plz

Mathematics
2 answers:
Alexxandr [17]3 years ago
7 0

Answer:

{3x}^{2}  + 5x + 2 \\  =  {3x}^{2}  + 3x + 2x + 2 \\  = 3x(x + 1) + 2(x + 1) \\  = (3x +2)(x + 1)

Sliva [168]3 years ago
5 0

Answer:

x=-2/3 and x=-1

factored form

(3x+2)(x+1)

[Let me know if there is another method your instructor wanted you to use]

Step-by-step explanation:

Given:

3x^2+5x+2=0

Factor using the quadratic formula:

x=\frac{-b+-\sqrt{b^2-4(a)(c)} }{2a}

x=\frac{-5+-\sqrt{(5)^2-4(3)(2)} }{2(3)}

x=\frac{-5+-\sqrt{25-24} }{6}

x=\frac{-5+-\sqrt{1} }{6}

x=\frac{-5+1}{6} and x=\frac{-5-1}{6}

Finally:

x=-2/3 and x=-1

Written in factored form would be:

(3x+2)(x+1)

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Answer:

there are 6 cakes if there are 60 cookies

Step-by-step explanation:

1:10

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6:60 there are 6 cakes

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How many triangles can be constructed with side lengths of 9.6 cm, 11.6 cm, and 21.2 cm?
nignag [31]

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============================================================

Explanation:

Adding up the two smaller sides gets us 9.6+11.6 = 21.2, but this result is not larger than the third side of 21.2

For a triangle to be possible, we need to be able to add any two sides and have the sum be larger than the third remaining side. This is the triangle inequality theorem.

I recommend you cutting out slips of paper with these side lengths and trying it out yourself. You'll find that a triangle cannot be formed. The 9.6 cm and the 11.6 cm sides will combine to form a straight line that is 21.2 cm, but a triangle won't form.

As another example of a triangle that can't be formed is a triangle with sides of 3 cm, 5 cm, and 8 cm. The 3 and 5 cm sides add to 3+5 = 8 cm, but this does not exceed the third side. The best we can do is form a straight line but that's not a triangle.

In short, zero triangles can be formed with the given side lengths of 9.6 cm, 11.6 cm, and 21.2 cm

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I believe that the answer is 8

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