Mathematics, 16.04.2020 20:27 Sariyahhall1
A bag contains some red, blue, yellow, and green marbles. 3/10 of the marbles are red, 2/5 are green, and the rest are blue or yellow. There are twice as many blue marbles as yellow marbles. There are 17 fewer blue marbles than red marbles. How many marbles are there in all
Answers: 2
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The volume of a cube is 8 in to the 3rd power. how long is each side?
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Mathematics, 21.06.2019 19:00
The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?
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Mathematics, 22.06.2019 01:40
Suppose we have a set of small wooden blocks showing the 26 letters of the english alphabet, one letter per block. (think of scrabble tiles.) our set includes 10 copies of each letter. we place them into a bag and draw out one block at a time. (a) if we line up the letters on a rack as we draw them, how different ways coukl we fill a rack of 5 letters? (b) now suppose we just toss our chosen blocks into a pile, and whenever we draw a letter we already have, we put it back in the bag and draw again. how many different piles of 5 blocks could result? possible? piles will contain at least one repeated letter? (c) if we draw out 5 blocks wit hout looking at them, how many different piles are (d) if we draw out 5 blocks without looking at them, how many of the possible 2. (4) consider the following formula. 12 give two different proofs, one using the factorial formulas and the other combina torial.
Answers: 3
A bag contains some red, blue, yellow, and green marbles. 3/10 of the marbles are red, 2/5 are green...
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