39. Folding paper. Each time you fold an ordinary sheet of paper in half, you double the thickness.

a. A single sheet of 20-pound bond paper is about a tenth of a millimeter

thick. How would you come up with this estimate? (Hint: Paper often

comes in reams of 500 pages.)

b. Find an exponential formula that gives the thickness of the sheet of paper

in part a after

f

folds in millimeters and in kilometers.

c. What would be the thickness in kilometers if you were physically able to

fold it 50 times? Note: For comparison, the distance from Earth to the Sun

is about

149,600,000

kilometers.

the balance is found at the link

step-by-step explanation:

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation:

i dont know

step-by-step explanation:

yes

step-by-step explanation:

they have to be opposite and reciprocal of eachother.