Factor completely 8x^2 − 4x − 84.
4(2x − 3)(x + 7)
4(2x + 3)(x − 7)
4(x − 3)(2x + 7)
4(x + 3)(2x − 7)

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

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab

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