The number z and 0.8 are additive inverses. drag and drop 0.8 and z to their correct positions on the number line. drag and drop the label “sum” to the sum of 0.8 and z

we know that

If two numbers have a sum of zero, then we say they are additive inverses.

so

z+0.8=0 -------> the sum is equal to zero

z=-0.8------> the additive inverse of z is equal to -0.8

using a graph tool

see the attached figure

the answer Part a) and part b) in the attached figure

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step-by-step explanation: