Four students are to be chosen from a group of 10 to fill the positions of president, vice-president, treasurer and secretary. in how many ways can this be accomplished?

you'll just earn points here

step-by-step explanation:

thats not a system of equations, that is a solution

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft