How many grooves are on the edge of a dime?
336510
There are exactly 118 GROOVES!
588899
7 dimes and 16 nickles because set x as dimes y as nickels x+y=23 10x+5y=150 so y=-x=23 and 10x-5x+115=150 so 5x=35 so x=7 and 7+y=23 so y=23-7 so y=7 so there is 7 dimes and 16 nickles
315866
They're all solved the same way.  Here's the first one.\n\n#1:  n is # of nickels; d is # of dimes\nn + d = 70;  n = 70 - d\n5n + 10d = 575\n5(70 - d) + 10d =575\n350 + 5d = 575\n5d = 225\nd = 45; n = 25\n\n#2:  Set it up and solve it just like the first one\n\n#3:  In the first two, the value of a nickel was 5 and the value of a dime was 10.  In this one, the value of a cod is 7 and the value of a mussel is 1.  Solve it the same way as the other two.\n\nRemember, anybody can make a mistake at this.  Always check your answer.  If you do, you can't be wrong.
766854
28! I just did it on paper putting 8 dots and connecting each one with the rest. There is a math formula for it but I don't remember it!
82142
You could call it an icosahedron, but I have never heard it called that since I think it is easier to just say 20-sided die.
1116253
just divide both sides by 0.015...\n\nand you will get...\n\n566.66 \n\nwith a repeating six.
459931
a nine-sided polygon???  can't wait to see other answers...
837128
My husband and I just used geometry the other day to estimate how much tile to buy for our 2 bathrooms.  Our bathrooms have a lot of irregular spaces, so we had to measure the entire perimeter of each bathroom.  We then split the bathrooms into different geometric shapes to find the area.  We had to work our formulas for several squares, rectangles, and triangles.   Then we added them all together to come up with the square footage.  After that, we had to estimate how many 12 inch by 12 inch tiles we needed.  It was pretty tricky, but my husband is a math whiz, so it's easy for him.  He's an engineer, go figure...
63969
A hexagon has 6 sides.
380874
Or 7:3 if the number of coins
957591
line = 1 side\nparallel lines = 2 sides\ntriangle = 3 sides\nsquare/ rectangle = 4 sides\npentagon = 5 sides\nhexagon = 6 sides\nheptagon = 7 sides\noctagon = 8 sides\nnonagon = 9 sides\ndecagon = 10 sides\n\ni hope i have helped you.... good luck
787617
(m)\n\n14 sides: tetradecogon
724177
B)48\n\nFirst of all, you can quickly eliminate choices A and C because the number of tiles (or area of the rectangle) has to be greater than or equal to the perimeter.  Then just use guess and check to see what dimensions give you a perimeter of 38 and an area of 48 or 52.  You'll come up with 3 x 16.
263042
If they are all the same size die (same number of faces), take the number of faces of one die and raise it to the power of the number of dice. If the dice are of different sizes, multiply the number of their faces together.
668507
You would use three dimes and a nickel. The dime being one coin the nickel being the other coin.
1157006
The rough edges are a throwback to a security measure used when coins were made of valuable metals.  The milled edges could not be ground or shaved off without someone noticing.  The nickle and penny weren't considered valuable enough.\n\nNowadays, the edges on a dime or quarter are more for decoration, but they are used as part of verifying process in vending machines.
807574
what is the space between the 14 and the 105?\n\nOh well, I guess it doesn't matter.  I added the numbers and came up with 153.  306 if you want me to add them twice.