Three research department is have 10 seven and eight members respectively each department is to select a delicate in an alternate to represent the department at a conference in how many ways can this be done

We conclude that exists 211680 ways.

Step-by-step explanation:

We know that the three research department is have 10, 7 and 8 members.

We choose a delegate and an alternate to represent the department.

First case: department  have 10 members.

So, for a delegate, we have 10 options, and for a alternate 9, so a total of

10 * 9 = 90 options.

Second case: department  have 7 members.

So, for a delegate, we have 7 options, and for a alternate 6, so a total of

7* 6 = 42 options.

Third case: department  have 8 members.

So, for a delegate, we have 8 options, and for a alternate 7, so a total of

8* 7 = 56 options.

Therefore, we get:

90 · 42 · 56 = 211680

We conclude that exists 211680 ways.

equal to

step-by-step explanation:

"it's not the heat, it's the humidity".   that's a partly valid phrase you may have heard in the summer, but it's actually both.   the heat index, also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature.   this has important considerations for the human body's comfort.   when the body gets too hot, it begins to perspire or sweat to cool itself off.   if the perspiration is not able to evaporate, the body cannot regulate its temperature.   evaporation is a cooling process.   when perspiration is evaporated off the body, it effectively reduces the body's temperature.   when the atmospheric moisture content (i.e. relative humidity) is high, the rate of perspiration from the body decreases.   in other words, the human body feels warmer in humid conditions.   the opposite is true when the relative humidity decreases because the rate of perspiration increases.   the body actually feels cooler in arid conditions.   there is direct relationship between the air temperature and relative humidity and the heat index, meaning as the air temperature and relative humidity increase (decrease), the heat index increases (decreases).

step-by-step explanation: