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3 years ago

Solve –3x^2 – 4x – 4 = 0

2 answers:

8 0

3x^2 – 4x – 4 = 0



multiply the first coefficient by the last coefficient: 

3 x -4= -12 

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

-6 and 2 

rewrite your equation: 

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

now split it... 

3x^2 - 6x 

AND 

2x -4 

factor each one so that both share a common factor: 

3x(x-2) 

AND 

2(x-2) 

Now combine them: 

(3x+2)(x-2)

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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r-ruslan [8.4K]

Answer:

$8\frac{1}{5} acres$

Step-by-step explanation:

$7\frac{1}{4} + 3\frac{1}{5} - 2 \frac{1}{4} \\\\7\frac{1}{4} - 2 \frac{1}{4} = 5\\\\then:\\\\7\frac{1}{4} + 3\frac{1}{5} - 2 \frac{1}{4} = 5 + 3\frac{1}{5} = 8 \frac{1}{5}$

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3 years ago

Read 2 more answers

Find the graph of y=-3/4X-2

morpeh [17]

To graph the line $y=- \frac{3}{4}x-2$ we are going to take advantage of the fact that its y-intercept is -2 when x=0, so our first point is (0,-2). To find our second point, we are going to find the x-intercept; to do it, we are going to set y=0 and solve for x:
$y=- \frac{3}{4}x-2$
$0=- \frac{3}{4}x-2$
$2=- \frac{3}{4}x$
$x= \frac{2}{- \frac{3}{4} }$
$x=- \frac{8}{3}$
Now that we have our second point $(0,- \frac{8}{3} )$ , we just need to join our two points with a straight line.

We can conclude that the graph of y=-3/4X-2 is:

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3 years ago

PLEASE HELP ME I BEG YOU!

ICE Princess25 [194]

The center of the circle is (3,9) so the answer is A

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3 years ago

The minute hand of a clock is 1.4 centimeters long. How far does the tip of the minute hand travel in 40 minutes? (Round your an

ozzi

Answer:

2.93cm

Step-by-step explanation:

I have to admit, this stumped me but I got o work and here's what I have for you. Hope this helps. TIP: remember it is the minute hand not any other hand.

For this one you will have to find the circumference of the clock because as the min hand goes round and round, it will act as a radius and it will go in a circular motion.

Formula will be π2r= 3.l4 * 2 * 1.4cm=8.792cm per every one revolution of the minute hand. Remembering that for the minute hand to revolve round the clock it has to cover 1 hr = 60min. For you to get the total circumference,

you'll have to take 8.792cm but since it is per every one revolution of the minute hand, multiply it by 40/60min. The answer will be 2.93066cm before rounding off. After rounding off you will have 2.93cm. Quite lengthy but I assure you after practicing you'll have at your fingertips.

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2 years ago

What is x if <img src="https://tex.z-dn.net/?f=xxx%20%2B%203358%20%3D%20461267" id="TexFormula1" title="xxx + 3358 = 461267"

lara [203]

Answer:

457,909

Step-by-step explanation:

-3358 from 461,267 and it gaves you 457,909

so 457,909 + 3358 = 461,267

7 0

3 years ago

Read 2 more answers