Eine Gerade hat die Steigung von 20% = 20/100, wenn sie auf 100m einen Höhenunterschied von 20m bewältigt.
a) Welche konstante Steigung müsste eine Straße haben, die einen Höhenunterschied von 157m auf einer Stecke von 1800m überwindet?
b) Wie lange wäre eine Straße mindestens, die bei maximal 10% Steigung einen Höhenunterschied von 157m überwindet?

translation:
A straight line has a gradient of 20% = 20/100 if it manages a height difference of 20m at 100m.
a) What constant slope should a road have that overcomes a height difference of 157m over a distance of 1800m?
b) How long would a road be at least that overcomes a height difference of 157m with a maximum gradient of 10%?

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

You are measuring the dimensions of the floor in your bedroom because you are planning to buy new carpet. which unit of measure is the most appropriate to use in this situation?

Suppose a pendulum is l meters long. the time, t,in seconds that it tales to swing back and forth once is given by t=2.01