A certain spider web is 4 micrometers thick. A fiber in a shirt is 1 hundred-thousandth of a meter thick. Which is wider, the spider web or the fiber?
How many meters wider?
explain your reasoning

The transitive property of equality states that: o if a = b, then bra o if a = b, then ac = bc o if a = b and b= c, then a = if a = b and c= c, then a + b = b + c

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle