A speck of dust is 1.2 x 10-6 m wide. Which of the following is the best way to rewrite this quantity, using more appropriate units?
A. 1.2 x 10-4 cm
B. 1.2 x 10-9 km
C. 1.2 x 10-3 mm
D. 1.2 x 10-6 m

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

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