Mathematics, 02.09.2020 01:01 seoulux
2. It is a beautiful sunny day at the fair. The U. V. index for this day is 8 or higher
so sunscreen is a must. The effectiveness of sunscreen is indicated by the
sunscreen protection factor (SPF). The higher the SPF number the less U. V.
rays can penetrate to burn the skin. When the protection factor (SPF), s, is
known you can determine the percent, p, of the sun's ultraviolet rays that pass
through it by using the following mathematical model:
100
P =
S
Answers: 3
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2. It is a beautiful sunny day at the fair. The U. V. index for this day is 8 or higher
so sunscree...
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