a sample of ore is found to be 
0
.
.
.83
%
0
.
.
.83
%
silver and 
0.039
%
0.039
%
diamond. what is the percentage of matter in the ore that is neither silver nor diamond?
i

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Need so much on this one how many yards?

Answer this two poles, ab and ed, are fixed to the ground with the of ropes ac and ec, as shown: two right triangles abc and edc have a common vertex c. angle abc and edc are right angles. ab is labeled 13 feet, ac is labeled 15 feet, ec is labeled 10 feet, and ed is labeled 4 feet.what is the approximate distance, in feet, between the two poles? 11.14 feet16.65 feet14.35 feet15.59 feet