A radioisotope has a half-life of 4 days. How much of a 20-gram sample of this radioisotope remains at the end of 16 day time period?group of answer choices 2. 5 gram 1. 25 gram 10 gram 5 gram.

1foot = 12 inches; 1 yard = 3 feet

Stefano accidentally dropped his sunglasses off the edge of a canyon as he was looking down. the height, h(t), in meters (as it relates to sea level), of the sunglasses after t seconds, is shown in the table. during its descent, the pair of sunglasses passed by a climber in the canyon 6 seconds after stefano dropped them. to the nearest meter, what is difference in elevation between stefano and the climber? 166 meters 176 meters 230 meters 240 meters its b.176 i took the test 166 is wrong and 176 is correct

The dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction