Question

Medal And Fans to anyone who helps!

Answer 1

?

Answer 2

x + y = 12
x - y = 10

What is the value of the x-determinant for the system shown?

Answer 3

add them up in a column, get
\[2x=22\] and you can solve that for x easily

Answer 4

@satellite73 but there isnt 11 in the answers its just
-22
-12
-2

Answer 5

oh i didn't read carefully

Answer 6

the x determinant, not x
ok that is kind of silly but we can do it

Answer 7

ok

Answer 8

i forget how to write a matrix here, the answer should be
\[12\times (-1)-1\times 10=-22\]

Answer 9

if you want to see a real easy explanation step by step, read this one
http://www.coolmath.com/algebra/14-determinants-cramers-rule/01-determinants-cramers-rule-2x2-01.htm

Answer 10

-22 ok btw can you stay for 3 more questions I really need urgent help

Answer 11

i guess

Answer 12

thx bud hold on while the other question goes up

Answer 13

2x - y - 4 = 0
3x + y - 9 = 0

What is the solution set of the given system?

Answer 14

you got choices?

Answer 15

yes hold on

Answer 16

actually who cares if you have choices
this is donkey work, as the computer and get the answer in a nano second
http://www.wolframalpha.com/input/?i=2x+-+y+-+4+%3D+0%2C+3x+%2B+y+-+9+%3D+0+

Answer 17

{(6/5, 13/5)}
{(13/5, 6/5)}
{(5, 6)}
{(6, 5)}

Answer 18

looks like B

Answer 19

holy crap is the website like... inception or something xD

Answer 20

5x + 2y = 8
x + y = 4

If you want to solve the system of equations by addition, which of the following could you do?

Multiply the second equation by 5 and add.
Multiply the second equation by 2 and add.
Multiply the second equation by -2 and add.

Answer 21

Multiply the second equation by -2 and add.
that would get rid of the y's

Answer 22

btw before you answer anything I would like to take the time to say thank you for help me and it is an honor to have a moderator help (:

Answer 23

hey no problem
and being a mod is no big deal

Answer 24

although i do get to ban annoying people, that part is kind of cool

Answer 25

Dude it gives you a higher authority. Mods are pretty cool anywhere

Answer 26

lol you get the last words and then ban lol xD

Answer 27

anyway next question

Answer 28

ready

Answer 29

yep!

Answer 30

5x + 2y = 7
y = x + 1

What is the solution set of the given system?

{(5/7, 12/7)}
{(12/7, 5/7)}
{(9/7, 16/7)}
{(16/7, 9/7)}

Answer 31

ask the magic ball
http://www.wolframalpha.com/input/?i=5x+%2B+2y+%3D+7+and+y+%3D+x+%2B+1

Answer 32

no way the inception thingy?!

Answer 33

looks like \(\frac{5}{7},\frac{12}{7}\)

Answer 34

yup so A

Answer 35

NEEEEXT!!!

Answer 36

ok you win

Answer 37

hmm you said three...

Answer 38

I am so getting that acting job. Basically if I get a B in math I am good for going to Hollywood, so... yea big deal to pass this thingy lol

Answer 39

But we are going through these like bullets going through... melons... stay for 3 more plz

Answer 40

you got five minutes

Answer 41

I didn't think we would go this fast

Answer 42

ok

Answer 43

2y = x + 3
5y = x - 7

What is the solution set of the given system?

{(-1/3, -4/3)}
{(1/3, 4/3)}
{(-29/3, -10/3)}
{(29/3, 10/3)}

Answer 44

@satellite73 I ready

Answer 45

cheat
http://www.wolframalpha.com/input/?i=2y+%3D+x+%2B+3+%2C5y+%3D+x+-+7

Answer 46

the inception thingy... TOO OP

Answer 47

1/2x + 1/3y = 3

Which of the following equations is equivalent to the given equation?

3x + 2y = 3
2x + 3y = 18
3x + 2y = 18

Answer 48

multiply by 6 and get
\[3x+2y=18\]

Answer 49

Solve this system algebraically.

7x - 2y = 4
5y + 3x = 10

{(-41/40, -41/58)}
{(41/40, 41/58)}
{(-40/41, -58/41)}
{(40/41, 58/41)}

Answer 50

http://www.wolframalpha.com/input/?i=7x+-+2y+%3D+4+and++5y+%2B+3x+%3D+10
40/41,58/41

Answer 51

last but not least

Answer 52

Solve this system algebraically.

9x + 2y = 5
y - 2x + 3 = 0

Answer 53

{(11/13, -17/13)}
{(-11/13, -17/13)}
{(-11/13, 17/13)}
{(11/13, 17/13)}

Answer 54

http://www.wolframalpha.com/input/?i=9x+%2B+2y+%3D+5%2C+y+-+2x+%2B+3+%3D+0+

Answer 55

halas
finito
stick a fork in it

Answer 56

This Guy Is going HAM, THIS GUY IS GOING HAAAAAAAM, THIS PERSON IS UN-STOP-A-BLE!!!!

Answer 57

dude you are the best

Answer 58

I don't know if you play games, but if you do I would love to play something with you

Answer 59

Or at least make it up to you

Answer 60

So... what do you say?

Answer 61

buddies?

Answer 62

@satellite73 Thank oh so dearly. If you were a teacher in a school, I would love to be in your class, you make things fun and still have people learn at the same time. I would Highly suggest you on OS. Thanks Bro. -Paragon