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tensa zangetsu [6.8K]
3 years ago
12

Solve –3x^2 – 4x – 4 = 0

Mathematics
2 answers:
vredina [299]3 years ago
8 0
<span> 3x^2 – 4x – 4 = 0

</span>

<span>multiply the first coefficient by the last coefficient: </span>

<span>3 x -4= -12 </span>

<span>Now think, what adds to the 2nd coefficient (-4) and multiplies to -12? </span>

<span>-6 and 2 </span>

<span>rewrite your equation: </span>

<span>3x^2 - 6x + 2x - 4 <==== this is essentially the same equation </span>


<span>now split it... </span>

<span>3x^2 - 6x </span>

<span>AND </span>

<span>2x -4 </span>

<span>factor each one so that both share a common factor: </span>

<span>3x(x-2) </span>

<span>AND </span>

<span>2(x-2) </span>

<span>Now combine them: </span>

<span>(3x+2)(x-2) </span>

raketka [301]3 years ago
4 0
-3x^2-6x+2x-4 =-3x (x-2)+2 (x-2) =(-3x+2)(x-2) -3x+2=0 X=2/3 X-2=0 X=2 Hope it helps! !!!!
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Find the slope of a line that runs through points (1,-7) and (-4,-3)
Reptile [31]

To find the slope between these two points, we can use the slope formula.

\frac{y.2 - y.1}{x.2 - x.1} = m

-3 + 7 / -4 - 1

4 / -5

-4/5

The slope of the line between these two points is -4/5. (This is your answer.)

7 0
4 years ago
Which of the following represents the set of possible rational roots for the
vichka [17]
Answer: plus or minus 1, 1/2, 2, 5, 5/2, and 10


Explanation:

To find the possible roots

We first find the factor of the constant term:

10: 1, 2, 5, 10

Then we find the factor of leading coefficient:

2: 1, 2

And the possible rational roots are:

Plus or minus [1/1, 1/2, 2/1, 2/2, 5/1, 5/2, 10/1, 10/2]

Then we get rid of the duplicate:

Plus or minus [1, 1/2, 2, 5, 5/2, 10]

3 0
3 years ago
Determine the value of x in the diagram?<br><br> A.32<br> B.10<br> C.20<br> D.16
Gnesinka [82]

Answer:

B. 10

Step-by-step explanation:

These are vertical angles meaning they are also equal.

4x-12=2x+8\\2x-12=8\\2x=20\\x=10

6 0
3 years ago
Read 2 more answers
a car is traveling down a highway at a constant speed, described by the equation d=55t, where d represents the distance, in mile
Sergeu [11.5K]

Step-by-step explanation:

69

6 0
3 years ago
The 759 students in Chad's middle school.44% participate in sports, 29% play in the band,
stellarik [79]

Answer:

A - 220

B -  205

Step-by-step explanation:

29% of 759 is 220.11, round down so it stays 220.

27% of 759 is 204.93 round up so it becomes 205.

bonus:

44% of 759 is 333.96 round up and it becomes 334.

to check your work, add 220, 205, and 334 and its 759. thats how you can be sure its correct.

hope this helps :)

3 0
3 years ago
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