Could 12.2
cm
,
6.0
cm
,
12.2 cm,6.0 cm,12, point, 2, start text, space, c, m, end text, comma, 6, point, 0, start text, space, c, m, end text, comma and
4.2
cm
4.2 cm4, point, 2, start text, space, c, m, end text be the side lengths of a triangle?

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

i hope i you.

5 pm

step-by-step explanation:

< xcy ≅ < xby

step-by-step explanation:

in δcax and δbax,

so, δcax ≅ δbax (side-angle-side or sas)

since δcax ≅ δbax, we can conclude < acx ≅ < abx

in δacy and δaby,

so, δacy ≅ δaby (side-angle-side or sas)

since δacy ≅ δaby, we can conclude < acy ≅ < aby

now,

< acy ≅ < aby

=> < acx + < xcy ≅ < abx + < xby

=> < acx + < xcy ≅ < acx + < xby   (since < acx ≅ < abx already proved above)

subtracting < acx from both sides, we get

< acx + < xcy -< acx ≅ < acx + < xby -< acx

cancelling out < acx and -< acx from both sides, we get

< xcy ≅ < xby (proved)

this would be 35. 35 + 5 = 40. you take the known constant and subtract by the answer of the equation and you get y.