A mathematics department has been experimenting with four different delivery methods for content in their Algebra courses. One method is the traditional lecture​ (method I), the second is a hybrid format with half the class time online and the other half​ face-to-face (method​ II), the third is online​ (method III), and the fourth is a model from which students obtain their lectures and do their work in a lab with an instructor available for assistance​ (method IV). To assess the effectiveness of the four​ methods, students in each approach are given a final exam with the results shown in the accompanying table. Do the data suggest that any method has a different mean score from the​ others? ​
a. What is the response variable in this​ study? Is it qualitative or​ quantitative?
b. What is the factor in this study? How many levels does it have?
c. Write the null and alternative hypotheses.

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1

bull

step-by-step explanation:

costs the what? what is the cost of the pants?

step-by-step explanation:

if it is $10, then the price is 14.

take 40% of the cost, and then add the cost.

40% of 10 = 4

4+10 = 14.