Here are six number cards.
-4 -2 -1 5 6 8
Arrange the cards into three pairs with the same total.
Note: Please write each pair on separate lines and
use the word 'and' between the numbers (eg. 7 and -3).

See explanation

Step-by-step explanation:

The first pair is (-4 and 8)

Because if we add those two values, i. e., 8 + (-4), we will get 4.

Again, the second pair is (-2 and 6). In that case, if we also add those two values, that is, 6 + (-2), we will get 4.

Finally, the third pair is (-1 and 5). Again, we will add the two values. 5 + (-1) = 4.

In each case, we can see that the addition of each pair is 4.Therefore, the total is similar in each pair after arranging the cards.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

what