Answer:
9 days
Step-by-step explanation:
Since the secret spread at a geometric rate we will use the geometric progression formulae
ar^n-1
First term = a= 5
common ratio is 2
For the nth term
5*2^n-1 = 1280 divide both sides of the equation with 5
2^n-1 = 256
2^n-1= 2^8
n-1 =8
n = 8+1
n=9
All the children will know the secret in 9 days
Alternatively
2nd day= 5*2^2-1
5*2^1=
5*2= 10
3rd day = 20
4th day= 40
5th day= 80
6th day = 160
7th day = 320
8th day =640
9th day =1280 children
Answer:
150(0.4),2,500(0.11)
Step-by-step explanation:The first question says 150 participants and 40%of the participants are eliminated. so it's 150(0.4)n
same goes for the second 2,500 bacteria in a colony the colony grows at a rate of 11% every hour so the answer to the question is 2,500(0.11)n
Hi! The answer is 231.25.
The answer is 231.25 because 8,325 / 36 is 231.25 I hope this helped! Goodluck :)
Answer:
There are 4 students and 9 apples
Step-by-step explanation
each student recieves 5 apples so 5 x 4= 20 20+ 7=27
27 can be divided by 3 and you get 9.
each student recieves 2 apples and there are 4 students. 9-8 =1
2x + 9 = 35
We subtract 9 in both sides:
2x + 9 - 9 = 35 - 9
2x = 26
We then divide 2 in both sides:
x = 13
