Answer:
wow that's amazing
Step-by-step explanation:
The US: 300m World: 9b Most accurate: B
300m•20=6b population
B is the most accurate
Let the number of third-graders be x.
We have been given that the number of fourth-graders is 47.
Total number of students = 92.
Therefore, x + 47 = 92
x = 92 - 47
x = 45
Hence, there are 45 third-grade students.
We are to find P(A' ∩ B).
A' indicates Compliment of A.
Since A and B are independent events, we can use the formula:
P(A' ∩ B) = P(A') x P(B)
P(A') = 1 - P(A) = 1 - 0.4 = 0.6
So,
P(A' ∩ B) = 0.6 x 0.9 = 0.54
So, option A gives the correct answer
Google translation
2/3 of a basket of apples rot. We eat 4/5 of the rest and use the remaining 25 to make jam. How many apples were in the basket
Answer:
375
Step-by-step explanation:
Since the basket was full, ⅔ rot so the remaining for any use will be 1-⅔=⅓
Since we only eat 4/5 of this remaining quantity, we use the 1-4/5=1/5 of ⅓ for making jam
1/5 of ⅓=1/5*⅓=1/15
If 1/15 equals 25 pieces then the full basket had
25*15/1=375 pieces