Acompany's stock was selling at $28 a share. a month later, it was selling at $21 a share. what is the percent decrease.

You can use the formula ...

... (percent change) = ((new amount) - (original amount))/(original amount) × 100%

Filling in the given information, this tells you ...

... (percent change) = ($21 -$28)/($28) × 100%

... = (-7/28) × 100%

... (percent change) = -25%

A negative percent change is a decrease, so the change in price is a ...

... 25% decrease

x=2 & x=1

step-by-step explanation:

7*1=7

7*2=14

7 is less than 21

14 is less than 21

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584