4. Your classmate says, “If 2x = 3y, then x: y = 2:3” Do you agree with him? Explain your answer.

I don't agree with him

Step-by-step explanation:

2x = 3y

If 2x = a , 3y has to equal a

2x = a

x = a/2

3y = a

y = a/3

Therefore,

x:y = x/y

Or; If 2x = 1 , 3y has to equal 1

2x = 1 , x=1/2

3y= 1 , y=1/3

x/y = (1/2) / (1/3) = 1/2. 3/1  = 3/2

Actually, we did same thing but maybe you can understand better

so, x/y = 3/2 , not 2/3. That's why I don't agree with him

Hope this helps ^-^

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6