<span>When order does not matter you use what is called n choose k formula
n!/(k!(n-k)!) where n is the number of things to choose from and k is the number of choices made, in this case:
20!/(4!(20-4)!)=4845</span>
Answer:
this is so easy
Step-by-step explanation:
Answer:
dont understand clearly
Step-by-step explanation:
dont understand clearly
x = –6
Solution:
Given expression is .
Step 1: Isolate the radical by subtracting 5 from both sides of the equation.
Step 2: Cube both sides of the equation to remove the cube root.
Cube and cube root get canceled in left side of the equation.
Step 3: To solve for x.
Add 2 on both sides of the equation.
Hence the solution is x = –6.