Solve each proportion
1.) 10/a = 6/8
please tell me how to do it there are 30 of them ;-;

a =

Step-by-step explanation:

Given

= ( cross- multiply )

6a = 80 ( divide both sides by 6 )

a = =

10/a=6/8

reduce the fraction with 2

10/a=3/4

Simplify the equation using cross-multiplication

40=3a

swap the sides of the equation

3a=40

divide both sides of the equation by 3

a=40/3

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