Help Please. The question is in the image.

2π

Step-by-step explanation:

The length of semicircles:

C = 2πr - full circle, the first one is half of this with r = 1, so it is π

The sequence is:

π, 1/2π, 1/4π, ...

This is an infinite GP with the first term of π and common ratio 1/2.

The sum of the lengths of the semicircles is the sum of this sequence:

S = a / (1 - r) S = π/(1 - 1/2) = π /(1/2) = 2π

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!

Agc and bgd are vertical angles