The price of a pair of headphones at store a is 4/5 the price at store b. the price at store a is 98.80. find how much you save by buying the headphones at store a

you save $24.7 by buying the headphone at store A

Step-by-step explanation:

The price of a pair of headphones

at store A is 98.80. The price of a pair of headphones at store A is 4/5 the price at store B. Let x represent the price of a pair of headphones at store B. It means that

4/5 × x = 98.80

4x/5 = 98.80

Multiplying the left hand side of the equation and the right hand side of the equation by 5, it becomes

4x = 98.80 × 5 = 494

x = 494/4 = 123.5

The amount saved by buying the headphone at store A is 123.5 - 98.80 = $24.7

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.

by definition, an arc subtended by a central angle of some given measure has the same measure. so .