If you could please help:)

Your answer is C.

Step-by-step explanation:

3.4 μm mean 3.4 Micrometers. Wow, that's pretty small.

A and B can instantly be ruled out, since it's micrometers, which are far smaller than meters. And 1 meter is 1e+6 times bigger than a micrometer, which makes D easily ruled out. The only answer you are left with is C, which is correct.

x = 17

step-by-step explanation:

in the given figure, two triangles are inscribed in a circle where ∠bae ≅ ∠dae which makes the side be and de equal so we can write it as:

3x - 24 = x + 10

solving this equation for x to get:

3x - x = 10 + 24

2x = 34

x = 34/2

x = 17

therefore, the value of x = 17.