5. Which two expressions are equivalent?
2 answers:
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Answer:
There are 120 1st graders at Sierra Elementary School this year
Step-by-step explanation:
Let n represent the total number of 1st graders at Sierra Elementary School
Since 45% of all 1st graders at Sierra Elementary School are female students and this year there are 54 female 1st graders, 45% of n is equal to 54
→ n() = 54
→ 45n = 5400
→ n = 120
Answer:
The expected number of wins for the player is 2.31
Step-by-step explanation:
No. of face cards = 12
total cards = 52
Probability of getting face card =
Probability of getting face card =
The player plays 10 times
Formula :
n = no. of trials = 10
p = probability of success=
E=expected number of wins
So, the expected number of wins for the player is 2.31