20 POINTS! Need answer ASAP

Step-by-step explanation:

⇒ is the same as

⇒ is the same as 1

*Note that it is not one as you must follow BIDMAS rules - you do 9 to the power of 0 before multiplying by the negative (which is -1)

⇒ 1/5 ÷ - 1

⇒ 1/5 × 1/ - 1

⇒ 1/-5

x = 3 ± √(5+y)

< 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)