Sorry for confusion.
I meant to write the following, the 7 students consists of 5 girls and 2 boys. What is the probability of selecting a group of one 1 boy and 2 girls.
Using combination I can deduce that: C(2,1)*C(5,2))/C(7,3) = 20/35
But my question is I attemped also to calculate the...
I know this problem can be done as follows.
P(1 boy and two girls) = (C(2,1)*C(5,2))/C(7,3) = 20/35
My question can this be written as probility fractions? Meaning
Lets say if that (2/5*3/7+1/2*1/7)/(3/7) But that doesn't give same result? what am I doing wrong?
Sure, If I do a dsolve in Maple on the IVP I get the following solution seen in the screenshot. But how should I got about finding the maximum size of v? If T(40)=37? Thats what I am unsure on.
The following IVP
diff(T(x), x) = v/200*(45 - T(x)) + 0.015*(22 - T(x)) where T(0)=39
Describes the tempetatur T in celcius at the time x of a tub filled with water. A tub which is filled with hot water at rate of v l/min.
Lets say I am told that a guy takes a 40 min bath, and during those 40...