3. 5x5x5. i am not sure if i am correct but i am assuming it is that.
Answer: b. helium nucleus
Helium nucleus is the particle that is being emitted in an alpha radiation. This helium nucleus then transforms and becomes decays that are also known as alpha decays. The alpha particle maybe similar to helium nucleus however, it does not have electrons surrounding it.
Concentric circles are circles that share a common center with each other.
There are 3 circles in this diagram. There is a circle with center A, a circle with center B, and a circle with center C. There are no circles that share the same center, as all circles have their own centers.
There are no concentric circles shown.
Answer:
1. x >= 5
2. x > -8
3. x < 4
4. x <= 8
Step-by-step explanation: