When we draw with replacement we have independent events and the probability of the conjunction is the product of the individual probabilities.
P(Green first & Blue second) = P(Green first) P(Blue second) = P(Green) P(Blue)
P(Blue) = P(Green first & Blue second) / P(Green) = (2/25)/(1/5) = 2/5
So 2/5 of the marbles are blue, (2/5)(15)=6 marbles
Choice D
Answer:
The distance as product of 38 and a power of 10 is
Step-by-step explanation:
In math when we're dealing with big numbers like this we express them in power of 10, since it'll be easyer to read that way. We take the parts of the number to the left that are not equal to "0", in this case 38, and multiply it by a power of 10. The expoent to this power of 10 will be the number of "0" after the 38 and before the ",". In this case the closest distance from Earth to Venus is 38,000,000 (there's a typo in the question). So we take the 38 and multiply it by , since there are 6 zeros.
The distance as product of 38 and a power of 10 is
Step-by-step explanation:
117+114= 231
360-231= 129
Now find two numbers that add up to 129
On the way to school, if the ratio of walkers to bus riders is 2:7, then the number of bus riders is 3.5 times<span> the number of walkers.</span>
Explanation:
7 is 3.5 times larger than 2.
2×3.5 = 7
Answer: 3.5