Archeologists have discovered a mummified corpse and they want to know how long ago she died. They determine that there is
25% C14 in her body. Use the reference diagram to determine how long ago she died. Explain your answer.

Jordan rides his bike 6 7/15 miles every day to deliver newspapers and to go to and from school. if his ride to and from school is 4 3/10 miles, how many miles is the trip to deliver newspapers? 1 1/3 1 1/6 2 1/6 2 4/5

How can you find the magnitude of a vector, v = < x,y > , where the horizontal change is x and the vertical change is y?

Andy wants to find the distance d across a river. he located points as shown in the figure, then use similar triangles to find that d = 223.5 feet. how can you tell without calculating that he must be wrong? tell what you think he did wrong and correct his error. round your answer to the nearest tenth if necessary. andy must have used the wrong . the distance d is actually feet.