In predicting the number of ways, there are two methods in probability; combination and permutation. Combination do not care what order it may be whereas permutation cares about the order. In this problem, we can use combination because the grouping of 5 cards is not restricted on what type of cards are to be inn this group. Use the equation:
C = n! / k! (n-k)!
C = 52! / 5! (52 - 5)!
C = 2,598,960
2 (d(h+w) + h w) is the surface area
First put the words in an algebraic format or a model. D = 3.5(√H). Now determine what the question is asking. It's height. Plug in the value of D. Distance is 35 km.
35 = 3.5(√H) We want to get H by itself. First thing to get away from it is 3.5. So divide 35 by 3.5 And 3.5(√h) by 3.5.
10 = √H To get rid of √ do the opposite raise to the power of 2
10² = (√H)²
100 = H
You must be 100 kilometers above ground to see 35 kilometers