Diameter times pi = circumference.
The relationship is called pi :D
Welcome!
Let's take a look at this!
1,000,000,000 meters = 1,000,000 kilometers
1,000,000 divided by 40000 equals 25
So, you can make 25 trips around Earth! Whoa!!!
Chance that it will snow in the first 3 days: 2/3
Chance that it will snow for the last four days: 3/4
(2/3)^3 times (3/4)^4 would get us the answer!
(Probability of snowing each of the three days) (Probability of snowing each of the four days)
(2/3)^3 times (3/4)^4 = 3/32
1-3/32=29/32
So, our answer is 29/32
Great! I'll help with it :D
It says there is a chance that it will snow where Bob lives
The question isn't complete :(
When you complete it, I'll be happy to help! :D
Let's make two equations!
Let j=Jack's age
Let b=Bob's age
j-13=b
j+8=2(b+8)
--Expand--
j-8=2b
--Subtract equations--
-5=-b
b=5
(Bob is 5 years old now)
18-13=5
So, Jack is 18 years old!
Ohh, I get it!
Thanks a lot, EP!
Also the graph helped a lot!
Let's write the equation for this! :D
(16+4x)/12 = (16+x)/12-x
Let's solve this equation!
--Cross multiply--
12(16+x) = (16+4x)(12-x)
192+12x = 192+32x-4x^2
--Combine "like" terms--
4x^2-20x=0
--Factor--
4x(x-5)=0
So, our answer would be x=5
