Alexis is shpping on the ground floor of the mall when she realizes she left her phone in the car .she walks down 6 floors to the underground parking garage. how far will alexis walk to get back to the ground floor? use integers to explain

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

16 is the absolute value

step-by-step explanation:

it is 28 degrees colder in detroit than philadelphia.

step-by-step explanation:

what number adds to 21

-7 + ? = 21

-7 + 28 = 21

hope it