V=s^2+1/2sh solve for h

Answer:

a) 20 different arrangements

b) 10 different arrangements

Step-by-step explanation:

When the order of selection is significant, we utilize permutations to determine the number of arrangements; if the order does not matter, we apply combinations.

For part a)

We must select 2 items from a collection of 5, considering that order matters. This is a permutation scenario, thus we calculate 5P2.

The general formula for permutations of n items taken r at a time is:

By inserting n=5 and r=2, we have:

Hence, it is possible to select 2 items from a group of 5 when the selection order is relevant.

For part b)

Since the order of selection is unimportant, we use combinations to calculate the number of ways of selecting 2 items from 5, represented as 5C2.

The general formula for combinations of n items taken r at a time is:

Plugging n=5 and r=2 into the formula results in:

This demonstrates that we can choose 2 items from a collection of 5 when the order of selection is not significant.

Answer:

A biconditional statement integrates a conditional statement alongside its converse in an if and only if format. Two line segments are congruent if and only if their lengths are identical... A biconditional is deemed true only when both conditional statements are true. there??

Step-by-step explanation: