The explicit rule for an arithmetic sequence is an = -4 + (n - 1)7. what is the common difference of the arithmetic sequence? d = what is the first term of the arithmetic sequence?

and the next thing is

x=3

y=10

z=17

27

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