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Bumek [7]
3 years ago
5

Factor completely 9x^2-4

Mathematics
2 answers:
GarryVolchara [31]3 years ago
8 0

Answer:

(3x-2)(3x+2)

When multiplied out it equals the original expression


jok3333 [9.3K]3 years ago
6 0

I think you means

9x² - 4 which is a difference of squares


difference of squares

a² - b²  can be factored as (a + b)(a - b)

so

9x² - 4

(3x + 2)(3x - 2)


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A rescue helicopter is used to help victims who fell in a ditch. The helicopter begins at sea level, which is an elevation of 0
cupoosta [38]

Answer:

The helicopter still needs to fly up sec 17.0886 at maximum speed.

Step-by-step explanation:

To find out how far the helicopter went down do 100(seconds) * 10.5 and get 1050

Then how much he traveled back up same thing 150 (seconds) * 5.2 and get 780

Next  find the difference 780-1050 and get -270 ft it is negative because it is still BELOW GROUND ( That's how you know if it need to fly up or down)

Last to find how many seconds you need you work backwards so instead of multiplying you do the opposite witch is dividing so you take your feet (270) and divide by the maximum speed (15.8). 270/15.8 is 17.08

 



3 0
4 years ago
Hello there, how are you? how’d you sleep? You look amazing today if i might add.
Zolol [24]
I’m good how are you gorgeous!! :)
6 0
3 years ago
Plz help i dont want to fail
WINSTONCH [101]

Answer:

p=\$1.50,\\c=\$0.75

Step-by-step explanation:

We can write the following system of equations:

\begin{cases}3p+2c=6.00,\\2p+3c=5.25\\\end{cases}

Multiply the second equation by -\frac{3}{2} to isolate and solve for c:

\begin{cases}3p+2c=6.00,\\-3p-4.5c=-7.875\\\end{cases},\\-2.5c=-1.875,\\c=\fbox{$\$0.75$},

Now plug in c=0.75 into any equation to solve for p:

3p+2(0.75)=6.00,\\3p=4.50,\\p=\fbox{$\$1.50$}.

6 0
3 years ago
Read 2 more answers
Find the sum of x^2+3x and -2x^2+9x+5
11111nata11111 [884]

Answer:

-x^2 +12x +5

Step-by-step explanation:

x^2+3x + -2x^2+9x+5

I like to line them vertically

  x^2+3x

-2x^2+9x+5

---------------------

-x^2 +12x +5

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4 years ago
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tino4ka555 [31]
13. 10-14
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3 years ago
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