Somebody help me out

.45kg

Step-by-step explanation:

because to zero out the scale if it is negative you just need to add a positive of the same number

he will need to add 0.45 kg

Step-by-step explanation: -0.45 is 0.45 away from 0 so if you add 0.45 to it you will get 0. Hope this helps! :)

the answer is b.

step-by-step explanation:

identity property is where 0+whatever number=whatever number. basically 0+ a number.

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1