Nthe past, 35% of the students at abc university were in the business college, 35% of the students were in the liberal arts college, and 30% of the students were in the education college. to see whether or not the proportions have changed, a sample of 300 students from the university was taken. ninety of the sample students are in the business college, 120 are in the liberal arts college, and 90 are in the education college. the calculated value for the test statistic equals

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

2 2/3 hours duhh silly

step-by-step explanation: