Answer:
30
Step-by-step explanation:
20+2(3*7 - 4*4)
20+2(21-16)
20+2*5
20+10
30
This involves quite a lot of arithmetic to do manually.
The first thing you do is to make the first number in row 2 = to 0.
This is done by R2 = -3/2 R1 + R2
so the matrix becomes
( 2 1 1) ( -3 )
( 0 -13/2 3/2) (1/2 )
(5 -1 2) (-2)
Next step is to make the 5 in row 5 = 0
then the -1 must become zero
You aim for the form
( 1 0 0) (x)
(0 1 0) (y)
(0 0 1) ( z)
x , y and z will be the required solutions.
The answer to this question is A
1 and 1/2 is the scale factor
Answer:
<u>The answer is 13/17</u>
Step-by-step explanation:
4x+y^2 divided by 4x+5y
4(3)+1^2 divided by 4(3)+5(1)
12+1 divided by 12+5
13 divided by 17
<u>13/17</u>
