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True [87]
2 years ago
13

Factor 4x^2-9x-9 and show work. please explain the steps taken

Mathematics
1 answer:
erik [133]2 years ago
4 0

Answer:

22x2 -  9x) -  9

<u> Trying to factor by splitting the middle term</u>

   Factoring  4x2-9x-9  

The first term is,  4x2  its coefficient is  4 .

The middle term is,  -9x  its coefficient is  -9 .

The last term, "the constant", is  -9  

Step-1 : Multiply the coefficient of the first term by the constant   4 • -9 = -36  

Step-2 : Find two factors of  -36  whose sum equals the coefficient of the middle term, which is   -9 .

     -36    +   1  =  -35  

     -18    +   2  =  -16  

     -12    +   3  =  -9  

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -12  and  3  

                    4x2 - 12x + 3x - 9

Step-4 : Add up the first 2 terms, pulling out like factors :

                   4x • (x-3)

             Add up the last 2 terms, pulling out common factors :

                   3 • (x-3)

Step-5 : Add up the four terms of step 4 :

                   (4x+3)  •  (x-3)

                                 <u><em>Hope this helps!</em></u>

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3 years ago
A car is traveling at a speed of 25 meters per second what is the cars speed in kilometers per hour how many kilometers will the
Likurg_2 [28]

Answer:

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Step-by-step explanation:

There are 1000 m in 1 km, and 3600 s in 1 h, so the speed conversion is ...

  \dfrac{25\,m}{s}\cdot\dfrac{1\,km}{1000\,m}\cdot\dfrac{3600\,s}{1\,h}=\dfrac{90\,km}{h}

The car's speed is 90 km/h.

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7 0
3 years ago
Subtract the fractions and simplify the answer 9-51/3<br> Can you show me
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4 0
3 years ago
What is the value of X
Alexus [3.1K]

Answer:

30

Step-by-step explanation:

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6 0
3 years ago
A bag contains 17 cards numbered 1 through 17. A card is randomly chosen from the bag. What is the probability that the card has
enyata [817]

Answer: 5/17

Step-by-step explanation:

Step 1: write all numbers from 1 to 17:

(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17)

Step 2: list all numbers in the space which are multiples of 3:

(3,6,9,12,15)

Probability that the card has a multiple of three of it is derived by dividing number of possible outcomes by number of total outcomes

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No of total outcomes =17

Pr (card drawn has multiple of 3) = 5/17

I hope this helps, please mark as brainliest answer.

6 0
3 years ago
Read 2 more answers
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