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What technique can be used for red and blue marbles of same size and mass?
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How do you separate red and blue marbles of same size and mass?
Chromatography
What are the least numbers of packs of yellow marbles and blue marbles a person would have to buy t ohave the same number of each color of marble?
That would depend on how many yellow and blue marbles are in a pack. If yellow and blue marbles are sold separately and there are the same number of marbles in a pack, buy one of each. That's probably not the case.
How can 4 red marbles make up one third of marbles and 3 blue marbles make up one fourth of the same group?
In order for 4 red marbles to be one-third of a group and 3 blue marbles to make up one-fourth of the same group the number has to equal 12.
A can with 40 marbles in it weighed 135 grams The same can with 20 marbles weighed 75 greams What is the mass of the can?
7.5 grams
In a bag there are 3 red marbles and B blue marbles. Two marbles are randomly selected from the bag without replacement. The probability that the two marbles are the same color is 0.5. What is the sum?
7
What separation technique can be used to separate a red and blue marbles of same size and mass?
I suppose that the manual separation is the most simple method.
How do you separate red and blue marbles of same size and mass?
Chromatography
What are the least numbers of packs of yellow marbles and blue marbles a person to have the same number of each color of marbles if the yellow marbles have 2 packs and the blue marbles have 3 packs?
6
What are the least numbers of packs of yellow marbles and blue marbles a person would have to buy t ohave the same number of each color of marble?
That would depend on how many yellow and blue marbles are in a pack. If yellow and blue marbles are sold separately and there are the same number of marbles in a pack, buy one of each. That's probably not the case.
How can 4 red marbles make up one third of marbles and 3 blue marbles make up one fourth of the same group?
In order for 4 red marbles to be one-third of a group and 3 blue marbles to make up one-fourth of the same group the number has to equal 12.
Explain how four red marbles can make up 13 of a group of marbles and three blue marbles make up 14 of the same group?
There has to be 12 marbles in the group. If 4 are red that is 1/3 of 12 and if 3 are blue that is 1/4 of 12. The rest can be any color. That is how you explain how four red marbles can make up 1/3 of a group of marbles and three blue marbles make up 1/4 of the same group :)
A can with 40 marbles in it weighed 135 grams The same can with 20 marbles weighed 75 greams What is the mass of the can?
7.5 grams
In a bag there are 3 red marbles and B blue marbles. Two marbles are randomly selected from the bag without replacement. The probability that the two marbles are the same color is 0.5. What is the sum?
7
Explain how four red marbles can make up one third of a group of marbles and three blue marbles make one fourth of the same group?
minus one red marble plus one blue marble
If the density of one marble is 2.5 gcm3 what is the density of four marbles?
Density is mass per unit volume. More marbles is more mass, but will be more volume as well. If the marbles are all the same, any number of them will have the same density, which is 2.5 grams/cm3. This is a "thinking" problem rather than a "calculation" problem.
If you had ten marbles 3 blue and 7 red and you picked out three marbles at the same time what would be the odds of picking 2 blue marbles?
1 in 5.45 of picking at least 2 blue marbles any 2 from 3 is 3 correct picks =3X7(red)=21 of 2 blue only 1 pick of 3 blue only any 3 from 10=120 120/22=5.45
How does the density of one marble compare with the density of six of the marbles?
Since density is mass per unit volume, the density is the same.
