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enot [183]
2 years ago
9

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

Mathematics
2 answers:
Alexxandr [17]2 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]2 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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can you show the graph

Step-by-step explanation:

8 0
3 years ago
What are the domain and range of the function below?
irina1246 [14]
I think the answer is

domain : (- infinity , infinity )

range : [ -2 , infinity )

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8 0
3 years ago
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Some one help me on this one
aleksandrvk [35]
The answer is III only, or D. 


We can start to solve this by knowing what the HL theorem means. The HL theorem, like its name implies, shows says that if a hypotenuse and leg of a triangle are congruent to the hypotenuse and leg of a different triangle, then the triangles are congruent. The only triangle that we see a hypotenuse congruent in is in figure III. In figure II, those congruent sides are both legs while in figure I we just see 2 congruent angles. Now in figure III, we can also see that two legs are congruent because of the reflexive property. That means that the answer is III, or D. 
5 0
3 years ago
Find the difference between 7 1/2 and 2 3/4
NNADVOKAT [17]

Answer:

4\frac{3}{4} or 4.75

Step-by-step explanation:

first we're going to convert the number into improper fractions.

7\frac{1}{2}= \frac{15}{2} and 2\frac{3}{4}= \frac{11}{4}

For subtracting it is suitable to adjust both fractions to an equal denominator, so we're going to multiply \frac{15}{2}x2, it'll equal the same number.

So now we have \frac{30}{4}-\frac{11}{4}, 30-11= 19.

\frac{19}4} simplified is, 4\frac{3}{4}.

As you can see I also added 4.75 as an answer, that's if the answer must be a decimal.

I hope this helps you!

3 0
3 years ago
PLEASE HELP
Vladimir [108]

Answer:

5.5 inches

Step-by-step explanation:

1) the formula to find the area of a square is l^2= area and l=length

in this case we already know the area but not the length

so we have to find the square root of 30 as the opposite operation needs to be used to find the missing number

so

√30= 5.47

5.47 rounded= 5.5

the length of one side is 5.5 in

5 0
3 years ago
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