Question

I need helppp!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

Explanation:

The distance formula is

`d=√((x_2-x_1)^2+(y_2-y_1)^2)`

x1 is a,

x2 is 0,

y1 is 0 and

y2 is b. Fitting those into the formula where they belong:

`d=√((0-a)^2+(b-0)^2)` and

`d=√((-a)^2+(b)^2)`

Since a negative squared is a positive, then

`d=√(a^2+b^2)`

which is the second choice down.