What does the reciprocal mean?

Step-by-step explanation:

A reciprocal, or multiplicative inverse, is simply one of a pair of numbers that, when multiplied together, equal 1. If you can reduce the number to a fraction, finding the reciprocal is simply a matter of transposing the numerator and the denominator. To find the reciprocal of a whole number, just turn it into a fraction in which the original number is the denominator and the numerator is 1.

For example, the reciprocal of 2/3 is 3/2 (or 1-1/2) , because 2/3 x 3/2 = 1. The reciprocal of 7 is 1/7 because 7 x 1/7 = 1.

Decimal numbers, too, have reciprocals. To find the reciprocal of a decimal number, divide 1 by that number. For instance, to find the reciprocal of 1.25, divide 1 by 1.25:

1 ÷ 1.25 = 0.8

The multiplicative inverse of 1.25, therefore, is 0.8.

Understanding reciprocals can simplify many math problems when you understand that dividing by a number is the same as multiplying by the reciprocal of that number. For example

5 ÷ 1/4

is the same as

5 x 4/1 (which is simply 5 x 4, which of course equals 20)

I hope it's helpful!!

an expression or function so related to another that their product is unity; the quantity obtained by dividing the number one by a given quantity.

"the compressibility is the reciprocal of the bulk

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

dude thats to long figure it

step-by-step explanation: