The speed ( in knots) of sound waves in air can be modeled by v(k) = 643.855
k
273.15
Where K is the air temperature (in Kelvin). The speed (in meters per second) of sound waves in the air
can be modeled by
s(K)
v(K)
1.944
What is the speed (in meters per second) of sound waves when the air temperature is 305 Kelvins?

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

In the 30-60-90 triangle below side s has a length of and side r has a length

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.