1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Dmitry [639]
3 years ago
9

What two numbers add up to 6 and multiply to 12?

Mathematics
1 answer:
GuDViN [60]3 years ago
7 0
Erm

x+y=6
xy=12


x+y=6
y=6-x
sub back

xy=12
x(6-x)=12
6x-x^2=12
x^2-6x=-12
x^2-6x+12=0
quadratic formula
for
ax²+bx+c=0
x= \frac{-b+/- \sqrt{b^2-4ac} }{2a}

for
x²-6x+12=0
a=1
b=-6
c=12
and remember that √-1=i

x= \frac{-(-6)+/- \sqrt{(-6)^2-4(1)(12)} }{2(1)}
x= \frac{6+/- \sqrt{36-48} }{2}
x= \frac{6+/- \sqrt{-12} }{2}
x= \frac{6+/- (\sqrt{-1})(\sqrt{12}) }{2}
x= \frac{6+/- (i)(2\sqrt{3}) }{2}
x= \frac{6+/- 2i\sqrt{3} }{2}
x=3+/-i√3

the numbers are 3+i√3 and 3-i√3
no real numbers tho
You might be interested in
Can anyone help me with 24,27,30 and 33 please
mamaluj [8]
24) 9/19

27 is a bit tricky for me.. sorry ):

30) On the 7th it will be 1/120
33) C
7 0
3 years ago
How many servings of<br> cups are in 33 cups of ice cream?
Galina-37 [17]

Answer:

I am 99% sure its 33 servings

Step-by-step explanation:

because the question says that "how many servings of <u>cups</u> are in <u>33 cups</u>".

(hopefully im right) and HOPEFULLY THIS HELPS. : )

5 0
3 years ago
What's the fraction root of 9 over 49?
irakobra [83]
<span>√9/49

First you figure out the square root of 9 which is 3 since 3 x 3 equals 9. Then you find the square root of 49 which is 7 since 7 x 7 equals 49. Therefore, the answer is 3/7</span>
5 0
3 years ago
Help please. Due Friday
devlian [24]
Right triangle

1) 75.6cm
2)10.14ft
3)16ft

Entire triangle

1)162cm
2)30.94ft
3)20ft
5 0
3 years ago
Solve the system of equations x+4y=15 2x-y=-15
Lady_Fox [76]

x+4y=15 2x-y=-15


We have to make x neg.


-2(x) + 4y (-2)= -2(15)


-2x-8y=-30

2x-y=-15


-9y= -45


Solve for y


Y=-45/-9


Y = 5

Substitute your y answer into one original equation to find x .


x+4y=15


X+4(5)=15


X+20=15


X=15-20


X= -5


Answer is (-5,5)

7 0
3 years ago
Other questions:
  • Find the ratio of the width of this basketball court it is permeiter 35( width) 91 ( length)
    6·1 answer
  • Prove: If C⊂A and D⊂B then D−A⊂B−C
    10·1 answer
  • Caan anyone please Tutor me for Geometry please!
    8·1 answer
  • A city planner wants to estimate, with a 99% confidence level, the average monthly residential water usage in the city. Based on
    12·1 answer
  • How long is a banana
    13·2 answers
  • Zachary is planning to send a video game to each of his two brothers. If he buys the same game for both brothers and pays $5.25
    11·1 answer
  • Select from the drop-down menu to correctly complete the statement about the given figures.
    9·2 answers
  • The coordinates A(0,0) B(0,4) and C(2,0)are graphed and connected together. What 3 dimensional shape will be created
    6·1 answer
  • Help please
    9·1 answer
  • Hello people of brainly lol
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!