A jar of gumballs contains 10 blue gumballs, 20 green gumballs, 15 yellow gumballs, and 25 pink gumballs. You reach into the jar and randomly select a gumball, then select another while replacing the first gumball back. What is the probability that you draw a green gumball as a percent and a fraction in simplest form?
my answer; 20/70 = 2/7 , 28.86%
Assuming you actually replace the 1st ball before drawing the 2nd, then the chance of drawing a green ball in at least one of the draws is the complement of drawing no green ball either time.
The chance of no green ball twice in a row is 50/70 * 50/70 = 35/49
So, the chance of getting one or two greens is 24/49.
On the other hand, if you draw the 2nd ball while replacing the first gumball back as you said, then that is basically another draw without replacement.
The chance of no green ball in two draws is then 50/70 * 49/69 = 35/69
So, the chance that you will get one or two green balls is 24/69.
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there are 9 red gumballs, 5 green gumballs, 8 yellow gumballs, and 8 blue gumballs in a machine, find the probability of getting a green gumball, then yellow
if there are 9 red gumballs, 5 green gumballs, 8 yellow gumballs, and 8 blue gumballs in a machine, what is the probability of getting a green gumball, then yellow
bro
To find the probability of getting a green gumball, then yellow, we need to multiply the probability of getting a green gumball first by the probability of getting a yellow gumball next, assuming the green gumball is replaced in the machine.
The probability of getting a green gumball is 5/30 (total number of gumballs)
The probability of getting a yellow gumball is also 8/30 (assuming the green gumball is replaced)
So, the probability of getting a green gumball, then yellow is (5/30) * (8/30) = 2/45 or about 0.044 or 4.44%.
A student observes interactions between two sets of electrically charged objects. In each set, the objects carry either a charge of –1 or +1 Coulomb. Which question can the student ask to identify the set with the stronger interaction?(1 point)
Responses
How large are the objects in each set?
How large are the objects in each set?
Are the objects both positively charged or both negatively charged?
Are the objects both positively charged or both negatively charged?
How far apart are the objects in each interaction?
How far apart are the objects in each interaction?
What is the mass of each object in the interactions?
How far apart are the objects in each interaction?
Object A has a charge of –1 Coulomb. At a given distance, the object with which charge would be most strongly attracted by object A?(1 point)
Responses
+1 C
+1 C
–1 C
–1 C
–2 C
–2 C
+2 C