B) -11 - -12 =
e) 18 - 8 =
h) 15- -21 =
k) -17 - -7 =

Good evening ,

Step-by-step explanation:

b) -11 - -12 = -11 + 12 = 12-11=1

e) 18 - 8 = (10+8)-8=10+8-8=10+(8-8)=10+0=10

h) 15- -21 = 15+21=36

k) -17 - -7 = -17+7 = (-10-7)+7=-10+ (-7+7)= -10 +0 =-10.

:)

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

hd extra 3-7 x d en is the answer