Do 3 negatives make a positive? Do 4 negatives make a positive? Someone help please, I'm having trouble with this. And yes, I know that two negatives make a positive.

It all relies on the operation being used and you have to work each problem step by step

Step-by-step explanation:

For example: Addition

What is +2+(-3)+(-3)?

So first thing to realise is that an addition sign + a negative sign - always equals to a negative sign. As shown here +(-3)=-3 because + and - when used together it always ends up being negative according to the rule. So the problem above works out to be +2+(-3)+(-3)=

+2-3-3

Work this step with this rule in Addition when adding or subtracting a positive and negative the resulting number always takes the sign of the bigger number .

So +2-3=-1 according to the rule .

When adding two negatives, add the numbers and place back the negative sign. So -3+(-1)=-4

So +2+(-3)+(-3)=-4

When Multiplying or dividing Positives + and negatives- the sign always results in a negative - But if you have two negatives - and -in multiplication and division the result is always a positive

Example

+2×-3=-6and -2×-3=+6 Using the rule

So if you have

(1) -2×(+2)×(-2)

If you work this step by step

-2×(+2)=-4

thus (-4)×(-2)=+8 according to the rule

so the answer for number 1 is +8

And

-×+×+×-= positive

-2×(+2)×(+2)×(-2)=+16

However

-2×-2×-2×+2 cannot be positive 16 it must be negative 16 working it out step by step

-2×-2=+4×-2=-8×+2=-16

Same thing applies for division

In conclusion all you need to do is remember the rules and you will be fine.

seems like d

step-by-step explanation:

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