Read the passage and then answer the question: In the early days of automobiles, rain was a real problem for drivers. Water covered the windshields, so drivers had to open their windows and stick their heads outside to see! When Mary Anderson saw drivers struggling in the rain, she thought she could help. Anderson started working on designs for a rain-clearing device. Even after many failures, she kept experimenting. This **persistence** resulted in Mary Anderson's invention of the modern windshield wiper. Her design put a rubber blade on a wooden stick. Today's wipers use the same basic principle that Mary Anderson dreamed up in 1903. What is the meaning of "persistence" as used in the passage? * 1.the quality of continuing in spite of difficulty
2.the lack of a sense of humor
3.a feeling of confusion or bewilderment
4.a feeling of sorrow or great sadness

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.

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation:

the distance between the school and her home is 3.6km.

12 mins = 0.2 hours = 1/5 hour

54 ÷ 3 = 18km per hour

1/5 of 18 = 3.6km per 12 mins