A person starts point A To point B 500 m way from each other and complete the distancing 1 min 40 sec then he turns round and run 200 m in 50 sec to point C? Calculate person average speed and average velocity from A To B and from A To C.
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Answer:
tex]3x {}^{2} - 4 { {x}^{2} }^{} + 8x - 7[/tex]Tooth decay can occur when the pH level in the mouth is 5.5. ... When we consume acidic foods and drinks, the pH within the mouth decreases and can cause the pH in the dental plaque to fall rapidly below 5.0. This happens through the production of acids as the bacteria metabolize the ingested nutrients.what is meant by saying that pH change may be the maincause of tooth decayTooth decay can occur when the pH level in the mouth is 5.5. ... When we consume acidic foods and drinks, the pH within the mouth decreases and can cause the pH in the dental plaque to fall rapidly below 5.0. This happens through the production of acids as the bacteria metabolize the ingested nutrients.Tooth decay can occur when the pH level in the mouth is 5.5. ... When we consume acidic foods and drinks, the pH within the mouth decreases and can cause the pH in the dental plaque to fall rapidly below 5.0. This happens through the production of acids as the bacteria metabolize the ingested nutrients.what is meant by saying that pH change may be the maincause of tooth decayTooth decay can occur when the pH level in the mouth is 5.5. ... When we consume acidic foods and drinks, the pH within the mouth decreases and can cause the pH in the dental plaque to fall rapidly