Question

Can someone PLEASE help me out?! medal AND fan!!

Answer 1

so

[-30 -5 ] [-20 - 4 ]
[+20 +30] + [-12 -32 ]
[-35 +35] [ 24 +32 ]

Answer 2

woah wait.. how in the world did you get that?

Answer 3

now we have to add these two matrices to get the answer

Answer 4

oook.. i think i see how you got that now.. you multiplied everything in the first matrix by - 5 right?

Answer 5

ok simply multiply the elements of matrix A with -5
and B with +4 we get the above rresult

Answer 6

ooh ook.. and now just add them to get the answer?:)

Answer 7

yes

Answer 8

ok hold on...

Answer 9

ok

Answer 10

-50 -9
8 -2
59 67

Answer 11

right?

Answer 12

but thats not an option.. these r the options i have:

Answer 13

[-50 -9]
[8 - 2 ]
[-11 +67]

Answer 14

simply your addition was wrong

Answer 15

ooooh i forgot the negative sign on the last one.. ok.. Thanks so much!!:) can you help me with more please?:)

Answer 16

ok i m waiting for the next one

Answer 17

i posted it :)

Answer 18

now multiply 2 with the matrix

Answer 19

take the result on the other side

Answer 20

after solving the subtraction of two matrices we get a matrix which will be divided by 2
and hence X will b found

Answer 21

ok.. i got

4 -16
-8 4

for the first part..

Answer 22

yes

Answer 23

now what?

Answer 24

take this matrix on the other side

Answer 25

what does that mean? like i add it with the other one?

Answer 26

if u have the case like
X +Y =Z
what u do is to find X

X= Z-Y

Answer 27

oh so subtract the 1st one with the 2nd one?

Answer 28

yes

Answer 29

ok i got

0 -22
-10 12

is that right?

Answer 30

no.. its not an option..:/

Answer 31

no

Answer 32

what did i do wrong?

Answer 33

here y is the matrix u got by multiplying by 2
and the matrix on the right side is Z

so u have to do Z-Y

Answer 34

could you please show me how?

Answer 35

[4 -6] - [4 -16]
[2 -8] [-8 4]

Answer 36

i got

0 -22
10 -12

but thats not an option either.

Answer 37

0 10
10 -12

Answer 38

thats still not an option?

Answer 39

u again made mistake in addition and subtraction

Answer 40

the one you posted wasnt an option either..

Answer 41

this wholle thing is 2X

now u have to divide it by two to get the answer

Answer 42

got it or not?

Answer 43

i guess so.. heres another one

Answer 44

the third one was the answer

Answer 45

r u sure? can you tell me how you figured it out?

Answer 46

answer for the last question was the third option
do u still have problem in the last question ? problem 2

Answer 47

yea i got that, thanks:) i need help on the next question that i posted:)

Answer 48

ok

Answer 49

do u know how to multiply a matrices

Answer 50

yep

Answer 51

then here we go

Answer 52

In question matrix is given

[TD=6 FG=3 S=2 PAT=1] this is of order 1*4

Answer 53

for team A
[TD=3 FG=2 S=1 PAT=0]
when we write it in horizontal way like the above one we don't fulfill the condition of multiplication i.e no. of colums of 1st matrix = no. of rows of 2nd matrix

so we have to write in this way
[ TD=3 ]
[ FG=2 ]
[ S=1 ]
[ PAT=0 ] of order 4*1


by multiplying this vector with the above one we will get what is required

Answer 54

[6 3 2 1] * [ 3 ]
[ 2 ]
[ 1 ]
[ 0 ]

Answer 55

now multiply them and get the answer for team A

Answer 56

i got 36..

Answer 57

and thats an option!! thanks so much!!:)

Answer 58

no no no its 26

Answer 59

[18+ 6+2 +0] = 26

Answer 60

ooh.. well that's still an option.. thanks!!:)

Answer 61

now did u get the method to solve it ?

Answer 62

i never tried so hard to make someone learn something .
Now i can go sleep with ease..