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guajiro [1.7K]
2 years ago
15

If vector v = ( 9 ) find -v and 3v -6

Mathematics
1 answer:
sergey [27]2 years ago
7 0
-V=-9
3V-6=3x9-6=27-6=21
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Show all work to solve 3x^2 + 5x − 2 = 0
Ratling [72]

Answer:

x=1/3 or x=−2

if i can be brainliest that would be great

Step-by-step explanation:

Step 1: Add 2 to both sides.

3x^2+5x−2+2=0+2

3x^2+5x=2

Step 2: Since the coefficient of 3x^2 is 3, divide both sides by 3.

3x^2+5x/3=2/3

x^2+5/3x=2/3

Step 3: The coefficient of 5/3x is 5/3. Let b=5/3.

Then we need to add (b/2)^2=25/36 to both sides to complete the square.

Add 25/36 to both sides.

x^2+5/3x+25/36=2/3+25/36

x^2+5/3x+25/36=49/36

Step 4: Factor left side.

(x+5/6)^2=49/36

Step 5: Take square root.

x+5/6=±√49/36

Step 6: Add (-5)/6 to both sides.

x+5/6+ −5/6=

−5/6±√49/36x=−5/6±√49/36x=

1/3 or x=−2

3 0
3 years ago
PLEASE HELP I HAVE 5 minutes I will mark as brilliant
Kruka [31]

Answer:

3x - 6

Step-by-step explanation:

4 0
3 years ago
I'm lazy and dont feel like doing math myself. So pls help me!
s2008m [1.1K]

Answer:

55

Step-by-step explanation:

Well you just plug in 10 as n.. and you get the equation:

\frac{10(10+1)}{2} \\\frac{10(11)}{2}\\\\\frac{110}{2}\\\\55

8 0
1 year ago
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