⦁ Fill in the missing amounts for a – d:

Step-by-step explanation:

Begin with the 215.88-200 for payment= 15.88+1358.73 purchases= 1374.61 + finance charge of 8.70= 1374.61. Double check this with a clearer copy please.

The formula is there. Sorry I couldn't be clearer.

sorry

step-by-step explanation:

sorry, but im pretty sure its a now that i look at it

< 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)