An archaeologist in turkey discovers a spear head that contains 51% of its original amount of c-14. find the age of the spear head to the nearest year.

In the 30-60-90 triangle below side s has a length of and side r has a length

What is the approximate value of  q  in the equation below? –1.613–1.5220.5853.079

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?