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Aright triangle has an area of 21 m2. the dimensions of the triangle are increased by a scale factor of 4. what is the area of the new triangle

An archaeologist in turkey discovers a spear head that contains 53% of its original amount of c-14. find the age of the spear head to the nearest year. (5250 isn’t right)

The intensity, or loudness, of a sound can be measured in decibels (db), according to the equation 0b is the intensity of a given sound and lo is the threshold of hearing intensity. what is the intensity, in decibels, [l(db)], when 1 - 10"(%)? use a calculator. round to the nearest whole number a. 15. b. 32 c. 320 d. 737