7 A plank of wood is 3 m in length. How long
will it be if I cut 5/8.m of wood from it?

1.125m

Step-by-step explanation:

the answer is a.

135 and 80

step-by-step explanation:

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c