Hurry

the distance traveled by a sound wave through a substance is proportional to time. the graph shows this relationship for several substances. which substances have a unit rate greater than 2 km/s?

choose all answers that are correct.

a.
cork

b.
glass

c.
lead

d.
titanium

About 9% of th population is hopelessly romantic. if 2 people are randomly selected from the population, what is the probability that at least 1 person is hopelessly romantic?

The two box p digram the two box plots show the data of the pitches thrown by two pitchers throughout the season. which statement is correct? check all that apply. pitcher 1 has a symmetric data set. pitcher 1 does not have a symmetric data set. pitcher 2 has a symmetric data set. pitcher 2 does not have a symmetric data set. pitcher 2 has the greater variation. ots represent the total number of touchdowns two quarterbacks threw in 10 seasons of play

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?