wait do you want it in standard form
People who never develop symptoms or are not yet showing symptoms (pre-symptomatic) might not know that they are infected but can still spread rona to others. Masks also offer protection to the wearer.
Answer:
Step-by-step explanation:
2a+3x+a+5x combine like terms
3a+8x
D is not in correct scientific notation. To be correct, the answer would be 5.0 x 10^2
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