Question

subtract by column method
3x+2y from 2x+3y​

Answer 1

Answer:

1x-1y

Step-by-step explanation:

The standard deviation of six observations is 4. If each observation is multiplied by 3, then the

variance of the resulting observations is

1) 12

2) 144

3) 16

4) 9

Answer 2

Answer:

3x+2y eq (1)

2x+3y eq(2)

by multiplying eq 1 by 2 and ea 2 by 3 we get

6x+4y

6x+9y

by substracting

-5y=0

y=5