Hey there!
To turn a fraction into a decimal, simply divide the numerator by the denominator.
so,

= 0.16
So, the decimal form of
is 0.16.
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Common denominator between 3 and 4 is 12. 2/3 becomes 8/12, and 3/4 becomes 9/12. Add them to get 17/12, which equals 1 and 5/12 lbs.
Alright, so let's make a function for the number of seats in a row. Number of seats = 25+ (number of row-1)(2) because it goes up by two. We start with 25, so we have that, then we get that it adds by 2 every row. However, for the first row it only has 25, so we have the number of the row -1 .If we figure out the 200th row, we get 25+398=423. Adding that and 25, we get 448. 448*100=44800, and we get that number because with an even number of rows, we add the 1st and 200th, the 2nd and 99th, and so on. This works because as you go up rows, you add two, and as you decrease rows, you decrease by two, so they cancel each other out and form 100 pairs. All pairs are equal.
I’m not 100% sure but I think it’s D.
There are 4 possibilities for cone or cup to hold your ice cream. There are 3 different sizes to choose from. There are 20 flavors of ace-cream, and then 15 choices of topping. Assuming you must choose 1 flavor of ice cream and 1 topping as the question implies, there are then 4*3*20*15 = 3600 different combinations to choose from. Answer is D: 3600