John and Alan have a collection of x baseball cards. John has x/4 cards. What fraction of the cards does Alan have?
2 answers:
Answer: B.
Step-by-step explanation:
Given: The total number of cards John and Alan has = x
The number of cards John has =
Then to find the number of cards Alan has, we need to subtract the number of cards John has from the total number of cards.
Then, the number of cards John has =
⇒ The number of cards John has =
⇒ The number of cards John has =
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Answer:
Step-by-step explanation:
A family has four children. If the genders of these children are listed in the order they are born, there are sixteen possible outcomes: BBBB, BBBG, BBGB, BGBB, GBBB, BGBG, GBGB, BGGB, GBBG, BBGG, GGBB, BGGG, GBGG, GGBG, GGGB, and GGGG.
Let X represent the number of children that are girls. Then
1. When X=0, there is one possible outcome BBBB. So
2. When X=1, then there are 4 possible outcomes GBBB, BGBB, BBGB, BBBG, so
3. When X=2, then there are 6 possible outcomes BGBG, GBGB, BGGB, GBBG, BBGG, GGBB, so
4. When X=3, then there are 4 possible outcomes GGGB, GGBG, GBGG, BGGG, so
5. When X=4, then there is one possible outcome GGGG, so
Now, the probability distribution table is