Multiply all of those and minus and do what is said and of not serch for links ok
Since the order of selection does not matter, we will use combinations to solve this problem.
We are to form the combination of 30 objects taken 6 at a time. This can be expressed as 30C6.
![30C6= \frac{30!}{6!*24!} \\ \\ = 593775](https://tex.z-dn.net/?f=30C6%3D%20%5Cfrac%7B30%21%7D%7B6%21%2A24%21%7D%20%20%5C%5C%20%20%5C%5C%20%0A%3D%20593775%20)
This means the six teachers can be selected in 593775 ways.
So the correct answer is option A
Assume E represents the cost of an egg and T represents the cost of one piece of toast.
We can construct two equations :
2E + T = $3.00 - - - - - (a)
E + T = $1.80 - - - - - (b)
Subtract equation b from a:
E = $1.20 (The price of one egg)
To find out the price of one piece of toast, replace the price of one egg in equation b:
T = $1.80 - $1.20 = $0.60 (The price of one piece of toast)
Hope that helps you
Step-by-step explanation:
c