Can someone explain this to me? i've been staring at this for 10 minutes. answer choices: always, always always, never never, always never, never

never and never

 2 negatives multiplied by each other = a positive number

 lets look at the first one:

 let a = -2

 you then have -2*(1/-2) = -2 * (-.5) = 1 ( positive 1 )

2nd eq, multiply a negative by a negative:

a = -3, b=-4, -3*-4 = 12 ( positive 12)

 both equations give positive numbers for answers

its 4 because 2 times 2 is 4, if you double the number two you get four

cut 138 centimeters off

step-by-step explanation:

250-112 = 138