A store pays $ 56 for a cell phone. The store marks the price at 20%. What is the quantity of the mark?

The quantity of the mark is $11.20

Step-by-step explanation:

Given that:

Amount paid by store for cell phone = $56

The store marks the price at 20%.

Quantity of the mark = 20% of 56

Quantity of the mark =

Quantity of the mark = 0.2 * 56

Quantity of the mark = $11.20

Hence,

The quantity of the mark is $11.20

16.9 times 2.85

step-by-step explanation:

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